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Science Unit 2 Benchmark Review

Total questions: 20

Worksheet time: 12mins

Name
Class
Date
1.

True or False? Objects in motion have balanced forces.

a)

True

b)

False

2.

When forces on an object are unbalanced, the object's __________________ will change. (Check all that apply)

a)

mass

b)

speed

c)

properties

d)

direction

3.

______________ motion has a predictable or repeating pattern.

a)

balanced

b)

friction

c)

cyclic

d)

all

4.

Which are examples of "shifting back and forth" cyclic motion?

a)

pendulum

b)

a baseball being thrown

c)

the Moon in orbit

d)

a swing

5.

Which are examples of "moving in one direction" cyclic motion?

a)

jumping on a trampoline

b)

a carousel

c)

using a pogo stick

d)

a pendulum

6.

Which are examples of "moving in cycles" cyclic motion?

a)

a carousel

b)

the moon in orbit

c)

throwing a baseball

d)

using a pogo stick

7.

The main force responsible for the swinging of a pendulum is:

a)

friction

b)

magnetic force

c)

gravity

d)

air resistance

8.

True or False? Changing the mass of the bob on a pendulum will change its circular pattern.

a)

True

b)

False

9.

True or False? Changing the length of a string on a pendulum will change its circular pattern.

a)

True

b)

False

10.

True or False? Changing the angle of release of a pendulum will change its circular pattern.

a)

True

b)

False

11.

____________ is the attractive force that pulls objects towards the center of the Earth.

a)

Friction

b)

Gravity

c)

Air Resistance

12.

The two factors that affect the pull of gravity are: ______________ and _______________.

a)

shape

b)

mass

c)

weight

d)

distance

13.

The larger the mass of an object, the ________________ the pull of gravity.

a)

greater

b)

lower

14.

Which will have the greatest pull of gravity?

a)

2 beach balls 2 feet apart

b)

2 bowling balls 2 feet apart

15.

The ___________ has the largest pull of gravity in our solar system.

a)

Moon

b)

Earth

c)

Sun

d)

Jupiter

16.

In order to change motion, a(n) ______________________ force must act on an object.

a)

balanced

b)

unbalanced

17.

Force is measured in:

a)

Newtons

b)

grams

c)

pounds

d)

ounces

18.

True or False? A 50kg man will have the same weight on Earth as he does on the moon.

a)

True

b)

False

19.

Do falling objects with more or less surface area experience more air resistance?

a)

More

b)

Less

20.

True or false: an object must be physically touched by a force to be affected by it.

a)

True

b)

False