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1Which of the following is a non-living thing?

A Tree B Rock C Bird D Flower

2What is the main source of energy for all living things?

A Water B Air C Sun D Soil

3Which force keeps objects on the ground?

A Gravity B Magnetism C Friction D Buoyancy

4What is the process of plants making their own food called?

A Respiration B Digestion C Photosynthesis D Excretion

5Which of the following is an example of a system?

A River B Rain C Cloud D Computer

6What is the unit of measurement for energy?

A Meters B Kilograms C Watts D Liters

7Which of the following is a renewable energy source?

A Coal B Natural gas C Wind D Nuclear

8What is the basic unit of matter?

A Atom B Molecule C Cell D Organelle

9Which of the following is a way to conserve the environment?

A Planting trees B Throwing litter C Polluting water D Cutting down forests

10What is the process of blood circulating in the body called?

A Digestion B Excretion C Respiration D Circulation