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Grades 6, 7 and 8 - Science - Middle School - Forces
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There are many types of force, such as thrust, magnetism and gravity. Different forces which act on objects.  Friction (which slows things down), gravity (which pulls things towards the Earth or other large body), magnetism (which attracts certain metals and repels opposite magnetic poles), air resistance and water resistance (which both drag on moving objects) - these are all different types of pushes and pulls. 
 

Grades 6, 7 and 8 - Science - Middle School - Forces
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25 Questions

1. 'Compressing' a spring means which of these?
2. What is force measured in?
3. Catapults are designed to provide a 'push' which will be stronger than the force of gravity - the object which is being catapulted should be aerodynamic to minimize which force?
4. Which of the following is NOT a touching force?
5. Imagine someone cycling up a steep hill. Which forces are being experienced by the cyclist's shoes?
6. A toy plastic boat floating in a bucket of water is experiencing which forces?
7. A child at the top of a slide is experiencing balanced forces. What force is needed to start the child sliding?
8. On Earth, 1kg weighs approximately 10 newtons. What would be the weight of 500g?
9. What effect does air resistance have on a falling object?
10. Different Newtonmeters are used to measure different amounts of force. A Newtonmeter designed to measure large forces will have what type of spring?
11. Which of the following statements about balanced forces is NOT true?
12. When a bowl is sitting on a table, which forces are said to be 'balanced'?
13. Why do trainers have rough-textured soles?
14. What does friction cause?
15. What forces are acting on a parachute as it falls through the air?
16. Which of these would not be a result of applying force to a material?
17. What type of force is air resistance?
18. What is weight measured in?
19. Which of the following is NOT a force?
20. Which of the following statements about unbalanced forces is NOT true?
21. What type of force is water resistance?
22. Which of these objects is designed to have low friction?
23. Which forces do the tires on a moving bicycle experience?
24. Which forces are acting on a child who is going down a slide?
25. A spring can be stretched by hanging weights on it. Which of the following is true?