A Science Quiz For Class 4 Students!
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Science is all about understanding the earth and the environment we live in. What else can you tell about Science? This is a science quiz for class 4 students designed to test out what you have learned in class so far. Do you know what is the hardest substance on earth? How many bones are there in our body? What are the different stages of the animal life cycle? Give this quiz a try and see what you score. Let's get started.
Science For Class 4 Students Questions and Answers
- 1.
In which season will you see a rainbow more often?
- A.
Summer
- B.
Monsoon
- C.
Winter
- D.
Rainbow can be seen at all times, even at night.
Correct Answer
B. MonsoonExplanation
During the monsoon season, there is typically more rainfall and moisture in the air. This creates ideal conditions for the formation of rainbows. Rainbows occur when sunlight is refracted and reflected by water droplets in the atmosphere, and the abundance of rain during the monsoon season increases the chances of these water droplets being present.Rate this question:
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- 2.
What grows from a seed?
- A.
Ant
- B.
Donkey
- C.
Plants
- D.
TV
- E.
Caterpillar
Correct Answer
C. PlantsExplanation
Plants grow from seeds through a process called germination. Seeds contain the necessary nutrients and genetic material for a plant to develop and grow. When a seed is planted in soil and provided with water, sunlight, and the right temperature, it begins to absorb water and swell. This triggers the seed to break open, allowing the embryonic plant inside to emerge and start growing. Over time, the plant develops roots, stems, leaves, and eventually flowers and fruits.Rate this question:
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- 3.
What material is obtained from animals and used to make clothing?
- A.
Wool
- B.
Iron
- C.
Cotton
- D.
Wax
Correct Answer
A. WoolExplanation
Wool is obtained from animals, particularly sheep, and is commonly used to make clothing. It is a natural fiber that is soft and warm and has excellent insulating properties. Wool is known for its ability to regulate body temperature, making it suitable for various climates. It is a popular choice for winter clothing due to its warmth and moisture-wicking properties. Additionally, wool is durable and has good elasticity, making it a versatile material for clothing production.Rate this question:
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- 4.
Fuel is chemically reacted to provide the energy to make things work. Petrol is a type of fuel used in vehicles to make them run. Which of these is also a type of fuel?
- A.
Water used in a bath
- B.
Food consumed by living things/organisms
- C.
Air pumped in bicycle tires
- D.
Steam released by a pressure cooker
Correct Answer
B. Food consumed by living things/organismsExplanation
Food consumed by living things is a type of fuel because it provides energy for the body to function. Just like petrol fuels vehicles, food fuels living beings by providing the necessary nutrients and calories that are converted into energy through metabolic processes. This energy is then used for various bodily functions such as movement, growth, and maintenance of body temperature.Rate this question:
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- 5.
For a nonstop flight, a plane sometimes needs to be given fuel during the middle of the flight. Which of these is necessary for mid-air refueling to happen?
- A.
One plane should be smaller than the other.
- B.
The planes should be flying above the clouds.
- C.
Planes should be flying as fast as each other (same speed).
- D.
One plane should be flying upwards and the other downwards.
Correct Answer
C. Planes should be flying as fast as each other (same speed).Explanation
In order for mid-air refueling to happen, both planes need to be flying at the same speed. If one plane is flying faster or slower than the other, it would be difficult to maintain a stable position for refueling. Therefore, having the planes flying at the same speed is necessary for successful mid-air refueling.Rate this question:
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- 6.
Which of the following is NOT a living thing?
- A.
A tree
- B.
A cat
- C.
A rock
- D.
A mushroom
Correct Answer
C. A rockExplanation
Living things have certain characteristics that distinguish them from non-living things. They grow, reproduce, need food or energy, respond to their environment, and are made up of cells. Rocks do not exhibit these characteristics and are therefore classified as non-living things.Rate this question:
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- 7.
When a coin is dropped in a glass of water, what will happen?
- A.
It will Float
- B.
It will Sink
- C.
Float mid-way
- D.
Break the glass
Correct Answer
B. It will SinkExplanation
When a coin is dropped in a glass of water, it will sink. The density of the coin is greater than the density of water. Objects with a higher density than the liquid they are placed in will sink, while objects with a lower density will float. Since the coin is denser than water, it will displace less water than its own weight, causing it to sink to the bottom of the glass.Rate this question:
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- 8.
What is the change of a substance from the liquid state to the gaseous state called?
- A.
Evaporation
- B.
Condensation
- C.
Sublimation
- D.
Filtration
Correct Answer
A. EvaporationExplanation
Evaporation is the process in which a substance changes from its liquid state to the gaseous state. This occurs when the substance absorbs enough heat energy to overcome the intermolecular forces holding its molecules together. As a result, the molecules gain enough energy to escape into the surrounding air, forming a vapor. Evaporation commonly occurs at the surface of a liquid, and it is a key component of the water cycle, as well as many industrial and everyday processes.Rate this question:
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- 9.
What is the change of a substance from the gaseous state to the liquid state called?
- A.
Condensation
- B.
Decantation
- C.
Sedimentation
- D.
Evaporation
Correct Answer
A. CondensationExplanation
Condensation refers to the process of a substance changing from a gaseous state to a liquid state. This occurs when the temperature of a gas is lowered, causing the gas molecules to lose energy and come closer together, forming a liquid. Condensation is commonly observed when warm air comes into contact with a cooler surface, such as when water vapor in the air condenses on a cold window.Rate this question:
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- 10.
What is the change of a substance from the solid state to the gaseous state called?
- A.
Sublimation
- B.
Evaporation
- C.
Melting
- D.
Filtration
Correct Answer
A. SublimationExplanation
Sublimation is the correct answer because it refers to the process in which a substance transitions directly from a solid state to a gaseous state, without passing through the liquid state. This occurs when the substance is heated and the vapor pressure exceeds the atmospheric pressure. Examples of substances that undergo sublimation include dry ice (solid carbon dioxide) and mothballs (solid naphthalene). Evaporation, on the other hand, is the process in which a liquid changes into a gas at a temperature below its boiling point, while melting is the process in which a solid changes into a liquid. Filtration is a completely unrelated process used to separate solid particles from a liquid or gas.Rate this question:
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- 11.
Which planet in our solar system is known for having a beautiful ring system?
- A.
Mars
- B.
Jupiter
- C.
Saturn
- D.
Neptune
Correct Answer
C. SaturnExplanation
Saturn is famous for its spectacular rings, which are easily visible through a small telescope and are one of the most recognizable features in our solar system. These rings are made up of millions of ice particles, as well as rocky debris and dust. Each particle orbits Saturn independently, and the rings themselves can be miles thick. Although other planets like Jupiter, Neptune, and Uranus also have ring systems, none are as prominent or as well-known as Saturn’s.Rate this question:
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- 12.
What causes the phases of the Moon?
- A.
The Earth’s shadow on the Moon
- B.
The Moon’s shadow on the Earth
- C.
The changing positions of the Moon, Earth, and Sun
- D.
The Moon moving closer and farther from the Earth
Correct Answer
C. The changing positions of the Moon, Earth, and SunExplanation
The phases of the Moon are caused by the changing positions of the Moon in relation to the Earth and the Sun. As the Moon orbits the Earth, different portions of its surface are illuminated by the Sun, resulting in the various phases, from new moon to full moon. This cycle repeats approximately every 29.5 days. It is a common misconception that the phases are caused by Earth’s shadow; that only occurs during a lunar eclipse.Rate this question:
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- 13.
What do plants exhale during photosynthesis?
- A.
Carbon dioxide
- B.
Oxygen
- C.
Nitrogen
- D.
Hydrogen
Correct Answer
B. OxygenExplanation
During photosynthesis, plants absorb carbon dioxide (CO2) and water (H2O) and convert them into glucose and oxygen (O2). This process occurs in the presence of sunlight and chlorophyll, a pigment in the leaves. The glucose serves as energy or food for the plants, while the oxygen is released into the atmosphere as a by-product. This oxygen release is crucial for the survival of most life forms on Earth as it contributes to the breathable atmosphere.Rate this question:
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- 14.
Which of these is NOT a state of matter?
- A.
Solid
- B.
Liquid
- C.
Gas
- D.
Heat
Correct Answer
D. HeatExplanation
The three traditional states of matter include solids, liquids, and gases. A solid has a definite shape and volume, a liquid has a definite volume but changes shape to fit its container, and a gas has neither definite volume nor shape, expanding to fill the space available. Heat, on the other hand, is not a state of matter; it is a form of energy that is transferred between substances or systems due to a temperature difference. Heat can influence the state of matter, such as melting a solid into a liquid or evaporating a liquid into a gas, but it is not itself a state of matter.Rate this question:
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Feb 28, 2025Quiz Edited by
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Mar 07, 2010Quiz Created by
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