Page 17 - Science Course 2 (Book 2)

Direction: Answer each question on the lines provided.

11. What is a force?

12. What is a contact force?

13. What is a noncontact force?

14. What is the unit of force?

Mo8-L1: Key Concept Check

Direction: On the line before each def nition, write the letter of the term that matches it correctly. Each
term is used only once.

1. a push or a pull on an object A. noncontact force

2. push or pull on one object by another object B. friction
3. applied without touching C. electric force

4. makes hair stand on end D. gravity
5. keeps you from f oating away E. lubricant

6. makes a compass needle point north F. force
7. unit of mass G. newton

8. unit of force or weight H. contact force
9. resists the motion of two surfaces that are touching I. magnetic force

10. reduces friction J. kilogram

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