Environmental Geosciences Exam 1
(45).webp "Environmental Geosciences Exam 1 - Quiz")
Questions and Answers
- 1.
In the theory of plate tectonics, the fragments of lithosphere called plates move over...
- A.
The asthenosphere
- B.
The outer core
- C.
The lithosphere
- D.
The lithosphere
Correct Answer
A. The asthenospHereExplanation
In the theory of plate tectonics, the lithosphere, which is the rigid outer layer of the Earth, is divided into several large and small plates. These plates are not fixed in place, but rather they float and move over the underlying asthenosphere, which is a partially molten and more ductile layer of the Earth's upper mantle. The asthenosphere acts as a lubricating layer, allowing the plates to move and interact with each other. Therefore, the correct answer is the asthenosphere.Rate this question:
-
- 2.
In the theory of plate tectonics, the fragments of lithosphere called plates move over...
- A.
The asthenosphere
- B.
The outer core
- C.
The lithosphere
- D.
The lithosphere
Correct Answer
A. The asthenospHereExplanation
The theory of plate tectonics states that the Earth's lithosphere is divided into several large plates that float and move on the semi-fluid layer beneath it called the asthenosphere. This movement is driven by convection currents in the asthenosphere, causing the plates to slowly drift apart, collide, or slide past each other. Therefore, the correct answer is the asthenosphere.Rate this question:
-
- 3.
New oceanic crust is produced:
- A.
At the subduction zones
- B.
At convergent plate boundaries
- C.
At transform plate boundaries
- D.
At divergent plate boundaries
Correct Answer
D. At divergent plate boundariesExplanation
New oceanic crust is produced at divergent plate boundaries. Divergent plate boundaries occur where two tectonic plates are moving away from each other. As the plates move apart, magma from the mantle rises to fill the gap, solidifies, and forms new oceanic crust. This process is known as seafloor spreading. The new crust then pushes the existing crust away from the boundary, creating a continuous cycle of crust formation and movement.Rate this question:
-
- 4.
New oceanic crust is produced:
- A.
At the subduction zones
- B.
At convergent plate boundaries
- C.
At transform plate boundaries
- D.
At divergent plate boundaries
Correct Answer
D. At divergent plate boundariesExplanation
New oceanic crust is produced at divergent plate boundaries. This is because at these boundaries, tectonic plates are moving away from each other, creating a gap or rift. Magma rises from the mantle and fills this gap, solidifying to form new oceanic crust. This process is known as seafloor spreading and is responsible for the continuous creation of new crust on the Earth's surface.Rate this question:
-
- 5.
Volcanic island arcs are characteristic for ............................ plate boundary.
- A.
Oceanic - oceanic subduction convergent
- B.
Oceanic- continental subduction convergent
- C.
Continental-continental collisional
- D.
Divergent
Correct Answer
A. Oceanic - oceanic subduction convergentExplanation
Volcanic island arcs are formed when one oceanic plate subducts beneath another oceanic plate at a convergent plate boundary. This subduction occurs when one plate is denser than the other, causing it to sink beneath the other plate. As the subducting plate sinks into the mantle, it melts, creating magma that rises to the surface and forms a chain of volcanic islands. This process is characteristic of oceanic-oceanic subduction convergent plate boundaries.Rate this question:
-
- 6.
Volcanic island arcs are characteristic for ............................ plate boundary.
- A.
Oceanic - oceanic subduction convergent
- B.
Oceanic- continental subduction convergent
- C.
Continental-continental collisional
- D.
Divergent
Correct Answer
A. Oceanic - oceanic subduction convergentExplanation
Volcanic island arcs are formed at oceanic-oceanic subduction convergent plate boundaries. This occurs when one oceanic plate is forced beneath another oceanic plate, creating a subduction zone. As the subducting plate sinks into the mantle, it melts and generates magma. This magma rises to the surface, forming a chain of volcanic islands. These volcanic island arcs are a characteristic feature of this type of plate boundary.Rate this question:
-
- 7.
Oceanic trenches typically occur along .......................... plate boundaries.
- A.
Divergent
- B.
Transform
- C.
convergent: continental-continental
- D.
Convergent: oceanic-continental
Correct Answer
D. Convergent: oceanic-continentalExplanation
Oceanic trenches typically occur along convergent plate boundaries, specifically the boundary between an oceanic plate and a continental plate. This is because when these two plates collide, the denser oceanic plate is forced beneath the less dense continental plate, forming a subduction zone. The subduction of the oceanic plate creates a deep trench in the ocean floor, known as an oceanic trench. These trenches are some of the deepest parts of the Earth's oceans and are often associated with volcanic activity and earthquakes.Rate this question:
-
- 8.
Oceanic trenches typically occur along .......................... plate boundaries.
- A.
Divergent
- B.
Transform
- C.
convergent: continental-continental
- D.
Convergent: oceanic-continental
Correct Answer
D. Convergent: oceanic-continentalExplanation
Oceanic trenches typically occur along convergent plate boundaries, specifically where oceanic and continental plates collide. In this type of plate boundary, the denser oceanic plate is subducted beneath the less dense continental plate, creating a deep trench in the ocean floor. This process is known as subduction and is responsible for the formation of many of the deepest parts of the world's oceans.Rate this question:
-
- 9.
The only liquid part of the Earth’s interior is:
- A.
Mantle
- B.
Oceanic crust
- C.
Outer core
- D.
Inner core
Correct Answer
C. Outer coreExplanation
The outer core is the correct answer because it is the only liquid part of the Earth's interior. The mantle is mostly solid rock, while the oceanic crust and inner core are both solid as well. The outer core, on the other hand, is a layer of molten iron and nickel that surrounds the solid inner core.Rate this question:
-
- 10.
The only liquid part of the Earth’s interior is:
- A.
Mantle
- B.
Oceanic crust
- C.
Outer core
- D.
Inner core
Correct Answer
C. Outer coreExplanation
The outer core is the correct answer because it is the only liquid part of the Earth's interior. The mantle is a solid layer made up of hot, flowing rock. The oceanic crust is a solid layer of rock that forms the bottom of the ocean. The inner core is a solid, dense ball of metal. Only the outer core, located between the mantle and the inner core, is known to be in a liquid state, primarily composed of molten iron and nickel.Rate this question:
-
- 11.
Which of the following is one of the largest lithospheric plates?
- A.
The Fiji plate
- B.
The Eurasian plate
- C.
The Cocos plate
- D.
The Philippine plate
- E.
The Juan de Fuca plate
Correct Answer
B. The Eurasian plateExplanation
The Eurasian plate is one of the largest lithospheric plates. It covers a vast area, including Europe, most of Asia, and parts of the Atlantic Ocean. It is surrounded by several other major plates, such as the North American plate, the African plate, and the Arabian plate. Its size and location make it a significant player in the tectonic activity and geological processes occurring in these regions.Rate this question:
-
- 12.
Which of the following is one of the largest lithospheric plates?
- A.
The Fiji plate
- B.
The Eurasian plate
- C.
The Cocos plate
- D.
The Philippine plate
- E.
The Juan de Fuca plate
Correct Answer
B. The Eurasian plateExplanation
The Eurasian plate is one of the largest lithospheric plates. It covers a vast area, including Europe, Asia, and parts of the Atlantic Ocean. This plate is significant because it interacts with several other plates, such as the North American plate and the African plate, leading to geological activities like earthquakes and the formation of mountain ranges.Rate this question:
-
- 13.
The plastic layer in the upper mantle just below the lithosphere is called the:
- A.
Crust
- B.
Inner core
- C.
Asthenosphere
- D.
hydrosphere
Correct Answer
C. AsthenospHereExplanation
The asthenosphere is the correct answer because it refers to the plastic layer in the upper mantle just below the lithosphere. This layer is characterized by its ability to flow and deform over long periods of time, which allows for the movement of tectonic plates on the Earth's surface. The asthenosphere plays a crucial role in plate tectonics and the formation of earthquakes and volcanic activity.Rate this question:
-
- 14.
The plastic layer in the upper mantle just below the lithosphere is called the:
- A.
Crust
- B.
Inner core
- C.
Asthenosphere
- D.
hydrosphere
Correct Answer
C. AsthenospHereExplanation
The plastic layer in the upper mantle just below the lithosphere is called the asthenosphere. This layer is characterized by its semi-fluid or plastic behavior, allowing it to flow and deform over long periods of time. The asthenosphere plays a crucial role in plate tectonics, as it is the layer where the movement of the lithospheric plates occurs. It is also responsible for the formation of volcanic activity and the movement of magma towards the Earth's surface.Rate this question:
-
- 15.
Movement of the plates ranges from:
- A.
1 to 20 cm/year
- B.
100 to 2000 cm/year
- C.
1000 to 20,000 cm/year
- D.
10,000 to 200,000 cm/year
Correct Answer
A. 1 to 20 cm/yearExplanation
The movement of the plates ranges from 1 to 20 cm/year. This means that the plates can move at a rate of 1 centimeter to 20 centimeters per year. This movement is relatively slow and gradual, but over long periods of time, it can result in significant changes to the Earth's surface. This range is considered to be within the normal range of plate tectonic movement.Rate this question:
-
- 16.
Movement of the plates ranges from:
- A.
1 to 20 cm/year
- B.
100 to 2000 cm/year
- C.
1000 to 20,000 cm/year
- D.
10,000 to 200,000 cm/year
Correct Answer
A. 1 to 20 cm/yearExplanation
The movement of tectonic plates can range from 1 to 20 cm/year. This refers to the gradual shifting and sliding of the Earth's lithosphere plates, which make up the Earth's surface. This movement is caused by the convection currents in the Earth's mantle. While it may seem like a small distance, over millions of years, this movement can lead to significant geological changes, such as the formation of mountains, earthquakes, and the creation of new landforms.Rate this question:
-
- 17.
Magnetic stripes (zones with opposite magnetic properties) on the seafloor indicate a movement of tectonic plates away from:
- A.
Subduction zones
- B.
Mid-oceanic ridge
- C.
Oceanic trenches
- D.
Continental slopes
Correct Answer
B. Mid-oceanic ridgeExplanation
Magnetic stripes on the seafloor are formed by the process of seafloor spreading at mid-oceanic ridges. As tectonic plates move apart at these ridges, magma rises to the surface and solidifies, creating new crust. The magnetic minerals in the magma align with the Earth's magnetic field, creating a pattern of stripes that alternate in polarity. Therefore, the presence of magnetic stripes indicates a movement of tectonic plates away from mid-oceanic ridges.Rate this question:
-
- 18.
Magnetic stripes (zones with opposite magnetic properties) on the seafloor indicate a movement of tectonic plates away from:
- A.
Subduction zones
- B.
Mid-oceanic ridge
- C.
Oceanic trenches
- D.
Continental slopes
Correct Answer
B. Mid-oceanic ridgeExplanation
The correct answer is mid-oceanic ridge. Magnetic stripes on the seafloor are created by the process of seafloor spreading, where new crust is formed at mid-oceanic ridges and older crust is pushed away. As the new crust forms, it acquires the magnetic properties of the Earth's magnetic field at that time. Over time, the Earth's magnetic field reverses, resulting in alternating magnetic stripes on the seafloor. Therefore, the presence of magnetic stripes indicates a movement of tectonic plates away from the mid-oceanic ridge.Rate this question:
-
- 19.
What was the name of the supercontinent that consisted of all the present day continents?
- A.
Eurasia
- B.
Laurasia
- C.
Pangea
- D.
Gondwana
Correct Answer
C. PangeaExplanation
Pangea was the name of the supercontinent that consisted of all the present-day continents. This supercontinent existed during the late Paleozoic and early Mesozoic eras, approximately 335 to 175 million years ago. It was formed by the collision and merging of several smaller continents. Over time, Pangea began to break apart, leading to the formation of the continents we know today. The name "Pangea" comes from the Greek words "pan" meaning "all" and "gea" meaning "earth", reflecting the fact that it was a single landmass encompassing all the major land areas of the time.Rate this question:
-
- 20.
What was the name of the supercontinent that consisted of all the present day continents?
- A.
Eurasia
- B.
Laurasia
- C.
Pangea
- D.
Gondwana
Correct Answer
C. PangeaExplanation
Pangea was the name of the supercontinent that consisted of all the present-day continents. It existed around 300 million years ago and began to break apart around 175 million years ago. The concept of Pangea was proposed by Alfred Wegener in 1912 and is supported by geological and paleontological evidence. This supercontinent played a significant role in shaping the Earth's landmasses and the distribution of plants and animals across the globe.Rate this question:
-
- 21.
Typically an oceanic crust is composed of:
- A.
Basalt and gabbro
- B.
Granite and diorite
- C.
Iron and nickel
- D.
Ultramafic rocks
Correct Answer
A. Basalt and gabbroExplanation
An oceanic crust is typically composed of basalt and gabbro. Basalt is a fine-grained volcanic rock that makes up the majority of the oceanic crust. Gabbro, on the other hand, is a coarse-grained intrusive rock that is found beneath the basalt layer. These two rocks are commonly found in oceanic crust due to the solidification of magma from underwater volcanic activity. The presence of basalt and gabbro in the oceanic crust is supported by scientific studies and observations of the Earth's geology.Rate this question:
-
- 22.
Typically a continental crust is composed of:
- A.
Basalt and gabbro
- B.
Granite and diorite
- C.
Iron and nickel
- D.
Ultramafic rocks
Correct Answer
B. Granite and dioriteExplanation
Continental crust is typically composed of granite and diorite. Granite is a coarse-grained igneous rock made up of quartz, feldspar, and mica, while diorite is a medium-grained intrusive igneous rock composed mainly of plagioclase feldspar and hornblende. These rocks are commonly found in the continental crust due to their lower density compared to basalt and gabbro, which are more commonly found in the oceanic crust. The presence of granite and diorite in the continental crust contributes to its overall composition and characteristics.Rate this question:
-
- 23.
Typically an oceanic crust is composed of:
- A.
Basalt and gabbro
- B.
Granite and diorite
- C.
Iron and nickel
- D.
Ultramafic rocks
Correct Answer
A. Basalt and gabbroExplanation
Oceanic crust is primarily composed of basalt and gabbro. Basalt is a fine-grained volcanic rock formed from the rapid cooling of lava on the ocean floor, while gabbro is a coarse-grained intrusive rock that forms from the slow cooling of magma beneath the surface. These rocks are characteristic of oceanic crust due to the volcanic activity and solidification processes that occur in the oceanic environment. Granite and diorite are typically found in continental crust, iron and nickel are elements found in the Earth's core, and ultramafic rocks are associated with the mantle.Rate this question:
-
- 24.
The number of protons is an element's:
- A.
Atomic number
- B.
Atomic mass number
- C.
Electron number
- D.
Electrical charge
Correct Answer
A. Atomic numberExplanation
The atomic number of an element represents the number of protons in its nucleus. Protons are positively charged particles, and each element has a unique number of protons. Therefore, the correct answer is atomic number.Rate this question:
-
- 25.
Typically a continental crust is composed of:
- A.
Basalt and gabbro
- B.
Granite and diorite
- C.
Iron and nickel
- D.
Ultramafic rocks
Correct Answer
B. Granite and dioriteExplanation
Continental crust is typically composed of granite and diorite. Granite is a coarse-grained igneous rock that is light in color and rich in minerals such as quartz, feldspar, and mica. Diorite is also an igneous rock, but it is darker in color and contains minerals such as plagioclase feldspar and hornblende. These rocks are commonly found in the continental crust because they are formed through the cooling and solidification of magma beneath the Earth's surface. This process occurs over long periods of time and allows for the formation of large, crystalline structures that make up the continental crust.Rate this question:
-
- 26.
An atom that has gained electrons is:
- A.
A cation
- B.
An anion
- C.
a neutron
- D.
Radioactive
Correct Answer
B. An anionExplanation
An atom that has gained electrons is called an anion. When an atom gains one or more electrons, it becomes negatively charged because the number of electrons exceeds the number of protons. This results in an imbalance of positive and negative charges, causing the atom to become an anion.Rate this question:
-
- 27.
The number of protons is an element's:
- A.
Atomic number
- B.
Atomic mass number
- C.
Electron number
- D.
Electrical charge
Correct Answer
A. Atomic numberExplanation
The atomic number of an element represents the number of protons in its nucleus. Protons are positively charged particles, and they determine the identity of an element. Each element has a unique atomic number, which allows us to distinguish one element from another. Therefore, the correct answer is atomic number.Rate this question:
-
- 28.
An atom that has gained electrons is:
- A.
A cation
- B.
An anion
- C.
a neutron
- D.
Radioactive
Correct Answer
B. An anionExplanation
An atom that has gained electrons is called an anion. An anion is a negatively charged ion formed when an atom gains one or more electrons. This results in an excess of negative charge, giving the atom a net negative charge. Cations, on the other hand, are positively charged ions that are formed when an atom loses one or more electrons. Neutrons are particles found in the nucleus of an atom and do not have a charge. Radioactive refers to the property of certain atoms to undergo spontaneous nuclear decay.Rate this question:
-
- 29.
An atom that has lost electrons is:
- A.
A cation
- B.
An anion
- C.
a neutron
- D.
Radioactive
Correct Answer
A. A cationExplanation
When an atom loses electrons, it becomes positively charged because the number of protons in the nucleus is now greater than the number of electrons. This positively charged atom is called a cation. Cations are formed when atoms undergo oxidation, meaning they lose electrons during a chemical reaction.Rate this question:
-
- 30.
An atom that has lost electrons is:
- A.
A cation
- B.
An anion
- C.
a neutron
- D.
Radioactive
Correct Answer
A. A cationExplanation
When an atom loses electrons, it becomes positively charged because the number of protons (positive charge) is greater than the number of electrons (negative charge). This positively charged atom is called a cation. Cations are formed when atoms undergo oxidation, which involves the loss of electrons. Therefore, the correct answer is "a cation."Rate this question:
-
- 31.
The kind of bonding characterized by sharing electrons is:
- A.
Ionic
- B.
covalent
- C.
Radioactive
- D.
Crystalline
Correct Answer
B. covalentExplanation
Covalent bonding is characterized by the sharing of electrons between atoms. In this type of bonding, atoms share pairs of electrons in order to achieve a stable electron configuration. This sharing of electrons creates a strong bond between the atoms, resulting in the formation of molecules. Covalent bonding is commonly found in nonmetallic elements and compounds.Rate this question:
-
- 32.
The kind of bonding characterized by sharing electrons is:
- A.
Ionic
- B.
covalent
- C.
Radioactive
- D.
Crystalline
Correct Answer
B. covalentExplanation
Covalent bonding is characterized by the sharing of electrons between atoms. In this type of bonding, atoms share one or more pairs of electrons in order to achieve a stable electron configuration. This sharing of electrons creates a strong bond between the atoms, resulting in the formation of molecules. Covalent bonding is typically found in nonmetallic elements and compounds.Rate this question:
-
- 33.
By definition, minerals are:
- A.
Solid
- B.
Liquid
- C.
Organic
- D.
All of the above
Correct Answer
A. SolidExplanation
Minerals are defined as solid substances that occur naturally and have a specific chemical composition and crystal structure. They are not liquids or organic materials. Therefore, the correct answer is solid.Rate this question:
-
- 34.
By definition, minerals are:
- A.
Solid
- B.
Liquid
- C.
Organic
- D.
All of the above
Correct Answer
A. SolidExplanation
Minerals are defined as solid substances that occur naturally in the Earth's crust. They are inorganic, meaning they are not formed by living organisms. This is why the correct answer is "solid", as minerals cannot be liquid or organic.Rate this question:
-
- 35.
Two most abundant chemical elements in the Earth's crust are:
- A.
Hydrogen and silicon
- B.
Oxygen and silicon
- C.
Silicon and carbon
- D.
Oxygen and carbon
Correct Answer
B. Oxygen and siliconExplanation
Oxygen and silicon are the two most abundant chemical elements in the Earth's crust. Oxygen makes up about 46.6% of the Earth's crust by weight, while silicon makes up about 27.7%. These two elements are found in various minerals and compounds that make up the majority of the Earth's crust, such as silicates and oxides.Rate this question:
-
- 36.
Two most abundant chemical elements in the Earth's crust are:
- A.
Hydrogen and silicon
- B.
Oxygen and silicon
- C.
Silicon and carbon
- D.
Oxygen and carbon
Correct Answer
B. Oxygen and siliconExplanation
Oxygen and silicon are the two most abundant chemical elements in the Earth's crust. Oxygen makes up about 46% of the Earth's crust, while silicon makes up about 28%. These elements are found in a wide variety of minerals and compounds, and their abundance in the crust is due to geological processes such as weathering and volcanic activity. Hydrogen and carbon are also important elements, but they are not as abundant in the Earth's crust as oxygen and silicon. Therefore, the correct answer is oxygen and silicon.Rate this question:
-
- 37.
Which of the listed minerals can be dissolved easily in water?
- A.
Calcite
- B.
Quartz
- C.
Diamond
- D.
Orthoclase
Correct Answer
A. CalciteExplanation
Calcite can be easily dissolved in water because it is composed of calcium carbonate, which has a low solubility in water. When calcite comes into contact with water, it reacts with the water molecules and dissolves, forming calcium and carbonate ions. This process is known as dissolution. In contrast, quartz, diamond, and orthoclase are all minerals that are not easily dissolved in water. Quartz is composed of silicon dioxide, which is insoluble in water. Diamond is composed of carbon, which is also insoluble in water. Orthoclase is a feldspar mineral that is not easily soluble in water.Rate this question:
-
- 38.
Which of the listed minerals is classified as a clay mineral?
- A.
Montmorillonite
- B.
Apatite
- C.
Corundum
- D.
Orthoclase
Correct Answer
A. MontmorilloniteExplanation
Montmorillonite is classified as a clay mineral because it is a soft, fine-grained mineral that is commonly found in soils and sediments. It belongs to the smectite group of clay minerals and is known for its ability to expand and contract depending on water content. Montmorillonite is often used in various industries, including ceramics, drilling fluids, and environmental remediation, due to its unique properties and abundance in nature.Rate this question:
-
- 39.
Which of the listed minerals can be dissolved easily in water?
- A.
Calcite
- B.
Quartz
- C.
Diamond
- D.
Orthoclase
Correct Answer
A. CalciteExplanation
Calcite can be easily dissolved in water because it is a mineral composed of calcium carbonate, which has a low solubility in water. When calcite comes into contact with water, the calcium carbonate molecules can break apart and dissolve, resulting in the mineral being dissolved in the water. This is why calcite is commonly found in areas with water, such as caves, hot springs, and limestone formations. In contrast, quartz, diamond, and orthoclase are not easily dissolved in water due to their different chemical compositions and structures.Rate this question:
-
- 40.
Which of the listed minerals is classified as a clay mineral?
- A.
Montmorillonite
- B.
Apatite
- C.
Corundum
- D.
Orthoclase
Correct Answer
A. MontmorilloniteExplanation
Montmorillonite is classified as a clay mineral because it is a type of phyllosilicate mineral that belongs to the smectite group. It is characterized by its soft, fine-grained texture and ability to swell when mixed with water. Montmorillonite is commonly found in soils and sediments and is used in various industries such as ceramics, drilling fluids, and cosmetics.Rate this question:
-
- 41.
Ca-rich plagioclase feldspar and Na-rich plagioclase feldspars are:
- A.
Silicates
- B.
Sulfates
- C.
Carbonates
- D.
Oxides
Correct Answer
A. SilicatesExplanation
Ca-rich plagioclase feldspar and Na-rich plagioclase feldspars are silicates. Silicates are a group of minerals that contain silicon and oxygen, along with other elements such as calcium (Ca) and sodium (Na). Plagioclase feldspars are a type of feldspar mineral that commonly occur in igneous rocks. They are important rock-forming minerals and are composed mainly of silicate minerals. Therefore, the correct answer is silicates.Rate this question:
-
- 42.
Micas are:
- A.
Silicates
- B.
Sulfates
- C.
Carbonates
- D.
Oxides
Correct Answer
A. SilicatesExplanation
Micas are silicates because they are a group of minerals that belong to the silicate mineral class. Silicates are minerals that contain silicon and oxygen, along with other elements such as aluminum, potassium, or iron. Micas have a layered structure and are known for their perfect cleavage, transparency, and ability to split into thin, flexible sheets. They are commonly found in igneous and metamorphic rocks and have various uses, including in the production of ceramics, cosmetics, and electrical insulators.Rate this question:
-
- 43.
Ca-rich plagioclase feldspar and Na-rich plagioclase feldspars are:
- A.
Silicates
- B.
Sulfates
- C.
Carbonates
- D.
Oxides
Correct Answer
A. SilicatesExplanation
Ca-rich plagioclase feldspar and Na-rich plagioclase feldspars are silicates. Silicates are a type of mineral that contain silicon and oxygen, along with other elements such as calcium (Ca) or sodium (Na). Plagioclase feldspars are a group of silicate minerals that are commonly found in igneous rocks. The presence of calcium or sodium in the composition of plagioclase feldspars determines whether they are Ca-rich or Na-rich.Rate this question:
-
- 44.
Minerals which contain SO42- group (gypsum is one of them) are termed:
- A.
Silicates
- B.
Oxides
- C.
Sulfates
- D.
Carbonates
Correct Answer
C. SulfatesExplanation
Minerals that contain the SO42- group are known as sulfates. Gypsum is one example of a mineral that falls into this category. Sulfates are compounds that contain the sulfate ion (SO42-), which consists of one sulfur atom bonded to four oxygen atoms. These minerals are commonly found in sedimentary rocks and are often formed through the evaporation of water containing high levels of sulfate ions.Rate this question:
-
- 45.
Micas are:
- A.
Silicates
- B.
Sulfates
- C.
Carbonates
- D.
Oxides
Correct Answer
A. SilicatesExplanation
Micas are silicates because they belong to a group of minerals that contain silicon and oxygen, along with other elements such as aluminum, potassium, and magnesium. Silicates are the most abundant minerals in the Earth's crust and have a wide range of uses, including in the production of ceramics, glass, and as electrical insulators. Micas, specifically, are characterized by their layered structure and ability to split into thin sheets. They are commonly found in igneous and metamorphic rocks and have various applications in industries such as cosmetics, paint, and electronics.Rate this question:
-
- 46.
Silica tetrahedron is composed of:
- A.
One ion of silicon and four ions of oxygen
- B.
One ion of silicon and one ion of oxygen
- C.
Four ions of silicon and four ions of oxygen
- D.
One ion of oxygen and four ions of silicon
Correct Answer
A. One ion of silicon and four ions of oxygenExplanation
A silica tetrahedron is composed of one ion of silicon and four ions of oxygen. This is because a silica tetrahedron is a fundamental unit of the mineral quartz, which is composed of silicon and oxygen atoms. The silicon atom is at the center of the tetrahedron, with four oxygen atoms surrounding it. This arrangement gives quartz its characteristic structure and properties.Rate this question:
-
- 47.
Minerals which contain SO42- group (gypsum is one of them) are termed:
- A.
Silicates
- B.
Oxides
- C.
Sulfates
- D.
Carbonates
Correct Answer
C. SulfatesExplanation
Minerals that contain the SO42- group are called sulfates. Gypsum is one example of a mineral that falls under this category. Sulfates are compounds that contain the sulfate ion (SO42-), which is made up of one sulfur atom bonded to four oxygen atoms. These minerals are commonly found in sedimentary rocks and are formed through the evaporation of water containing high concentrations of sulfate ions.Rate this question:
-
- 48.
Which of listed minerals belongs to phosphates and is used as a component of agricultural
- A.
Feldspar
- B.
Apatite
- C.
Gypsum
- D.
Halite
Correct Answer
B. ApatiteExplanation
Apatite is a mineral that belongs to phosphates and is commonly used as a component of agricultural fertilizers. It is rich in phosphorus, which is an essential nutrient for plant growth. By adding apatite to the soil, farmers can provide plants with the necessary phosphorus for healthy development and increased crop yields. Therefore, apatite is an important mineral in the agricultural industry.Rate this question:
-
- 49.
Silica tetrahedron is composed of:
- A.
One ion of silicon and four ions of oxygen
- B.
One ion of silicon and one ion of oxygen
- C.
Four ions of silicon and four ions of oxygen
- D.
One ion of oxygen and four ions of silicon
Correct Answer
A. One ion of silicon and four ions of oxygenExplanation
The correct answer is one ion of silicon and four ions of oxygen. This is because a silica tetrahedron is a structure that consists of one silicon ion at the center, bonded to four oxygen ions surrounding it. This arrangement forms a tetrahedral shape, with the silicon ion in the middle and the oxygen ions at the corners.Rate this question:
-
- 50.
................... rocks form on the surface of the earth
- A.
Volcanic
- B.
Plutonic
- C.
Intrusive
- D.
Phaneritic
Correct Answer
A. VolcanicExplanation
Volcanic rocks form on the surface of the earth through volcanic activity. When magma erupts from a volcano and cools quickly, it solidifies into volcanic rocks. These rocks have a fine-grained texture due to the rapid cooling process. This is in contrast to plutonic rocks, which form beneath the surface and have a coarse-grained texture. Intrusive rocks also form beneath the surface, but they cool slowly, resulting in a coarse-grained texture. Phaneritic is a term used to describe rocks with visible crystals, but it does not specifically refer to rocks formed on the surface.Rate this question:
-
Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
May 25, 2023Quiz Edited by
ProProfs Editorial Team -
Jun 23, 2011Quiz Created by
Tuesdayisnice
Roles of Plants and Animals in the Environment Quiz
Roles of Plants and Animals in the Environment Quiz
Quiz: Can You Ace the Theory of Generalized Constrained Forestry (TGCF) Test?
Quiz: Can You Ace the Theory of Generalized Constrained Forestry (TGCF) Test?
Quiz: Uncovering Your Impact on Earth's Greatest Challenges
Quiz: Uncovering Your Impact on Earth's Greatest Challenges
Quiz: How Human Activity Impacts Ecosystem Stability?
Quiz: How Human Activity Impacts Ecosystem Stability?
- Continent Quizzes
- Earth Science Quizzes
- Easy Geography Quizzes
- Fictional Geography Adults Quizzes
- Five Themes Of Geography Quizzes
- Geology Quizzes
- Human Geography Quizzes
- Imperialism Quizzes
- Island Quizzes
- Land Quizzes
- Latitude And Longitude Quizzes
- Location Quizzes
- Nation Quizzes
- Nature Quizzes
- Navigation Quizzes
- Ocean Quizzes
- Physical Geography Quizzes
- Planet Quizzes
- Regional Geography Quizzes
- Remote Sensing Quizzes
- World Quizzes
- World Geography Quizzes