Page 16 - Science Course 2 (Book 2)

Mo8-L1: Vocabulary Review

Direction: Use the clues and the terms listed below to complete the puzzle. NOTE: There is no empty
square in the puzzle between the words of two-word terms.

contact force force friction gravity mass
noncontact force signif cant static weight

Across

6. the amount of matter in an object

9. Gravity is an example of this kind
of force.

Down

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

2. the gravitational force exerted on an
object

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

4. at rest

5. important

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

8. a push or a pull

Mo8-L1: Key Concept Organizer

Direction: On the line before each motion, write C if it is caused by a contact force or N if it is caused by
a noncontact force.
1. rain falling

2. papers scattered by wind
3. a baseball sailing into the outf eld

4. a magnet attracting a nail
5. rocks tumbling down a mountain

6. an elevator ascending
7. an arrow f ying toward a target

8. lightning striking a building
9. a brick wall collapsing

10. a meteorite hitting Earth

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