How Much Science Do You Know?

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| By Janeathotcourses

Janeathotcourses

Community Contributor

Quizzes Created: 3 | Total Attempts: 1,864

Questions: 10 | Attempts: 1,005 | Updated: Mar 22, 2023

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Remember the days of school science lessons? Wearing your lab coat to all lesson just to watch your friends explode Mentos in a bottle of Coca Cola after class? Take our quiz to find out how much you actually remember a few years later.

Questions and Answers

1.

Which is the molecule symbol for methane?
- A.
- B.
Correct Answer
A.

Explanation
The molecule symbol for methane is CH4.

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2.

Dry ice is a form of what?
- A.
  
  Frozen nitrogen
- B.
  
  Frozen carbon dioxide
Correct Answer
B. Frozen carbon dioxide

Explanation
Dry ice is a form of frozen carbon dioxide. It is called "dry" ice because it does not melt into a liquid when heated, but instead goes through a process called sublimation, where it changes directly from a solid to a gas. Dry ice is commonly used for cooling purposes, such as preserving perishable items during transportation or creating special effects in theater productions.

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3.

The earth's atmosphere is 10% oxygen.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The atmosphere is a mixture of 78% nitrogen, 21% oxygen and 1% other gases.

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1
0
4.

Where in the body is insulin produced?
- A.
  
  The liver
- B.
  
  The pancreas
- C.
  
  The thyroid gland
- D.
  
  The spleen
Correct Answer
B. The pancreas

Explanation
Insulin is produced in the pancreas. The pancreas is an organ located in the abdomen, behind the stomach. It plays a crucial role in regulating blood sugar levels by producing and releasing insulin into the bloodstream. Insulin helps to control the amount of glucose in the blood and allows cells in the body to use and store glucose for energy.

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1
0
5.

Which of these does not affect photosynthesis?
- A.
  
  Temperature
- B.
  
  Light intensity
- C.
  
  Rainfall
- D.
  
  Chlorophyll
Correct Answer
C. Rainfall

Explanation
Rainfall does not directly affect photosynthesis. Photosynthesis is the process by which plants convert sunlight, carbon dioxide, and water into glucose and oxygen. While rainfall indirectly supports photosynthesis by providing plants with the water they need to carry out the process, it is not a direct factor that affects the process itself. Temperature, light intensity, and chlorophyll, on the other hand, directly impact photosynthesis. Temperature affects the rate of chemical reactions involved in photosynthesis, light intensity provides the energy needed for the process, and chlorophyll is the pigment that captures sunlight for photosynthesis to occur.

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6.

Approximately what is the pH of your stomach?
- A.
  
  1-3
- B.
  
  4-5
- C.
  
  7
- D.
  
  8-9
Correct Answer
A. 1-3

Explanation
The pH of the stomach is approximately 1-3. This level of acidity is necessary for the stomach to break down food and kill bacteria. The stomach produces hydrochloric acid, which helps in the digestion process. A pH of 1-3 is highly acidic, indicating a low pH level.

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7.

Which chemical element, number 11 in the periodic table has the symbol Na?
- A.
  
  Nickel
- B.
  
  Sodium
- C.
  
  Iron
- D.
  
  Silver
Correct Answer
B. Sodium

Explanation
Sodium is the chemical element with the symbol Na and atomic number 11. It is a highly reactive metal that is commonly found in salt compounds. Sodium is known for its role in maintaining fluid balance in the body and is essential for nerve and muscle function. It is commonly used in the production of various chemicals and is also a component of table salt.

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8.

Diamonds are a form of which chemical element?
- A.
  
  Calcium
- B.
  
  Platinum
- C.
  
  Carbon
- D.
  
  Sodium
Correct Answer
C. Carbon

Explanation
Diamonds are a form of the chemical element carbon. Diamonds are composed of carbon atoms that are arranged in a crystal lattice structure, giving them their unique properties such as hardness and brilliance. Carbon is the only chemical element that can form diamonds under the conditions of high pressure and temperature found deep within the Earth's mantle.

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9.

Which mineral forms the lead in a pencil?
- A.
  
  Lead
- B.
  
  Graphite
Correct Answer
B. GrapHite

Explanation
Graphite is the correct answer because it is the mineral commonly used to make the lead in pencils. Despite its name, pencil "lead" is actually made of graphite, a form of carbon that is soft and easily leaves marks on paper. Graphite is a good choice for pencil lead because it has a layered structure that allows it to easily slide off onto the paper, making it ideal for writing and drawing.

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10.

Which is the longest bone in the human body?
- A.
  
  The spine
- B.
  
  The femur
- C.
  
  The tibia
- D.
  
  The humerus
Correct Answer
B. The femur

Explanation
The femur is the longest bone in the human body. It is located in the thigh and extends from the hip to the knee. The femur is responsible for supporting the weight of the body and facilitating movement. It is a strong and sturdy bone that plays a crucial role in the structure and function of the skeletal system.

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