1. Which two systems work closely together to enable you to walk and run?

2. The backbone is made up of small bones called .

3. Which of the following are produced by the kidneys?

4. The main organs of excretion in the body are the

5. Scientists think global warming can cause __________________ .

6. Acid Rain is caused when ___________________ .

7. Each suggestion below was made by a different Member of Parliament. If you were the Prime Minister, which suggestions would you support as reasonable ways to help prevent further destruction of the environment?

1. Research and develop cleaner fuel for cars
2. Use more plastic bags to save the trees
3. Encourage people to replant trees on bare hillsides
4. Recycle old newspapers and plastic containers

8. Which special name is given to the joint in the image?

9. Which special name is given to the joint in the image

10. The biceps and triceps muscles move in:

11. Which muscle is always moving:

12. What is the opposite of Waterproof?

13. Which of the following is used in thermometers?

14. Which of the following is used to make X-Ray Sheets?

15. Which metal is found in car batteries?

16. Which of the following is used as rocket fuel?

17. Which gas is used to make ammonia?

18. Pizza is an example of:

19. To separate Mixtures comprised of two or more pure liquids, we use:

20. Identify the method of separating solid to solid mixtures. Choose your answer from the choices given below.

A – Handpicking

B- Sieving

C-Using a Magnet

Fine flour and lumpy flour __________________

21. Identify the method of separating solid to solid mixtures. Choose your answer from the choices given below.

A – Handpicking

B- Sieving

C-Using a Magnet

Mixed nuts __________________

22. Identify the method of separating solid to solid mixtures. Choose your answer from the choices given below.

A – Handpicking

B- Sieving

C-Using a Magnet

Sand and gravel __________________

23. Identify the method of separating solid to solid mixtures. Choose your answer from the choices given below.

A – Handpicking

B- Sieving

C-Using a Magnet

Sand and rice __________________

24. Identify the method of separating solid to solid mixtures. Choose your answer from the choices given below.

A – Handpicking

B- Sieving

C-Using a Magnet

Scrap iron and nail __________________

25. The insoluble substance from a liquid mixture was separated whereby a liquid passes through the holes in a filter The solid particles are left behind. What method of separating mixture is used?