1. Science 8-Chapter 2 Lesson 1
Gravity and Friction
Vocabulary Quiz

2. the amount of matter in an object

3. mass
the amount of matter in an object

4. a push or pull on an object by another object without touching it

5. noncontact force
a push or pull on an object by another object without touching it

6. a push or pull on an object

7. force
a push or pull on an object

8. at rest or having no motion

9. static
at rest or having no motion

10. a force that prevents objects from moving, or keeps them at rest

11. static friction
a force that prevents objects from moving, or keeps them at rest

12. the gravitational force exerted on an object

13. weight
the gravitational force exerted on an object

14. an attractive force that exists between all objects that have mass

15. gravity
an attractive force that exists between all objects that have mass

16. a force that resists the motion of two surfaces that are touching

17. friction
a force that resists the motion of two surfaces that are touching

18. all objects are attracted to each other by a gravitational force

19. law of universal gravitation
all objects are attracted to each other by a gravitational force

20. important, momentous

21. significant
important, momentous

22. friction between a surface and a fluid

23. fluid friction
friction between a surface and a fluid

24. fluid friction between a surface and air

25. air resistance
fluid friction between a surface and air

26. a push or pull on an object by another object that is touching it

27. contact force
a push or pull on an object by another object that is touching it

28. a force that prevents objects from moving, or keeps them at rest

29. sliding friction
a force that prevents objects from moving, or keeps them at rest