Across
- 2. – A substance that helps protect the body from diseases.
- 6. – The force that pulls objects toward the Earth.
- 7. – A material that does not allow electricity to pass through it easily.
- 9. – A force that opposes motion when two surfaces rub together.
- 10. – An organism such as mushrooms, yeast, or mould.
- 13. – An instrument used to see tiny objects that cannot be seen with the naked eye.
- 16. – The body's natural ability to fight diseases.
- 18. – A source of electrical energy.
- 19. – A force that moves an object away from you.
- 20. – An object that attracts iron and some other metals.
Down
- 1. – A push or pull acting on an object.
- 3. – A material that allows electricity to pass through it.
- 4. – The practice of keeping yourself and your surroundings clean.
- 5. – Tiny living organisms; some are helpful while others can cause diseases.
- 8. – A very small germ that can only grow inside a living cell.
- 11. – The process of getting the food needed for good health and growth.
- 12. – A closed path through which electric current flows.
- 14. – Physical activity that helps keep the body healthy and fit.
- 15. – A tiny living thing that can only be seen with a microscope.
- 17. – The movement of an object from one place to another.