Science Practice Test Online (20 MCQs) for Grade 7 Students
Science Practice Test online with this Grade 7 Students.
20 MCQs with answers and clear explanations to help students learn and revise concepts.
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This Science Practice Test for Grade 7 is designed to help students revise important science topics.
The test includes 20 multiple choice questions with answers and clear explanations.
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#1. Which force pulls objects toward the Earth?
Explanation:
Gravity is the force that pulls objects toward the Earth. It keeps us and other objects from floating away.
#2. Which simple machine helps lift heavy objects?
Explanation:
Levers, pulleys, and inclined planes are all simple machines. They make work easier by reducing the effort needed.
#3. Which planet is known as the Red Planet?
Explanation:
Mars is called the Red Planet because of its reddish appearance. The color comes from iron oxide on its surface.
#4. What change occurs when ice melts into water?
Explanation:
Melting ice into water is a physical change because no new substance is formed. The change can be reversed by freezing the water again.
#5. Which part of the plant absorbs water from the soil?
Explanation:
Roots absorb water and minerals from the soil. They also help to hold the plant firmly in the ground.
#6. Which part of the cell controls all activities?
Explanation:
The nucleus acts as the control center of the cell. It contains genetic material that directs cell activities.
#7. Which type of energy is stored in food?
Explanation:
Food stores chemical energy. When we eat food, this energy is released and used by the body for growth and activities.
#8. Which process do plants use to make their own food?
Explanation:
Photosynthesis is the process by which green plants make their own food using sunlight, water, and carbon dioxide. This process takes place mainly in the leaves.
#9. Which organ helps in thinking and memory?
Explanation:
The brain controls thinking, memory, and emotions. It is the main control center of the human body.
#10. What is the boiling point of water at sea level?
Explanation:
At sea level, water boils at 100 degrees Celsius. At higher altitudes, the boiling point becomes lower.
#11. Which process changes liquid water into water vapor?
Explanation:
Evaporation is the process by which liquid water changes into water vapor due to heat from the Sun.
#12. What is the main function of the lungs?
Explanation:
The lungs help in breathing by exchanging gases. They take in oxygen and release carbon dioxide from the body.
#13. What gas do plants release during photosynthesis?
Explanation:
During photosynthesis, plants use carbon dioxide and release oxygen into the air. This oxygen is essential for most living organisms.
#14. Which system controls all activities of the human body?
Explanation:
The nervous system controls body activities by sending and receiving messages. It includes the brain, spinal cord, and nerves.
#15. Which gas is most abundant in Earth’s atmosphere?
Explanation:
Nitrogen makes up most of Earth’s atmosphere. It helps maintain air pressure and supports life indirectly.
#16. Which material allows electricity to pass through easily?
Explanation:
Copper is a good conductor of electricity. That is why it is commonly used in electrical wires.
#17. Which type of rock is formed from magma?
Explanation:
Igneous rocks are formed when magma or lava cools and hardens. Examples include basalt and granite.
#18. Which organ pumps blood throughout the human body?
Explanation:
The heart is a muscular organ that pumps blood to all parts of the body. It helps deliver oxygen and nutrients to cells.
#19. What do we call animals that eat both plants and animals?
Explanation:
Omnivores eat both plants and animals. Humans are an example of omnivores.
#20. What is the main source of energy for Earth?
Explanation:
The Sun is the main source of energy for Earth. It provides light and heat that support life.
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