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C - Unit 3 Review

Total questions: 23

Worksheet time: 19mins

Name
Class
Date
1.
What is a disadvantage of using an inclined plane to lift a heavy object?
a)
The object must be moved a greater distance.
b)
It takes less effort to move the object.
c)
Many objects are difficult to lift straight up.
d)
Heavy object usually take up more space.
2.
Which of the following decreases when an object is moved using an inclined plane?
a)
The distance the object moves.
b)
The pull of gravity on the object.
c)
The force needed to move the object.
d)
The amount of space the object occupies.
3.

What does an inclined plane look like from the side?

a)

square

b)

rectangle

c)

triangle

d)

circle

4.

A person pushes against a wall with 15N of force. The wall doesn't move. The wall exerts how much force on the student?

a)

15N

b)

greater than 15N

c)

less than 15N

d)

0N

5.

What would cause the person on the right to change position?

a)

The force applied by the two people on the right would have to be greater than 200N.

b)

the force applied by the two people on the right would have to be less than 200 N.

c)

The person on the left would need to turn around

d)

It is impossible

6.

An inclined plane reduces the amount of force needed to move an object by -

a)

increasing the distance the object moves.

b)

transferring more of the force to the object

c)

reversing the direction the object is moved.

7.
What is a PUSH or PULL of an object?
a)
Motion
b)
Force
c)
Friction
d)
Gravity
8.
What is the formula to calculate speed?
a)
S = t/d
b)
S = d/t
c)
S = d x t
d)
S = t x d
9.
What is speed?
a)
how far you go
b)
how much distance is covered over a period of time
c)
how fast you accelerate
d)
the change in the location of a object
10.
A runner races in the 100 meter dash.  It takes her 10 seconds to finish.  What is her average speed?
a)
10 m/s
b)
1000 m/s
c)
100 seconds
d)
10 seconds
11.

In what direction with the box move?

a)

right

b)

left

c)

up

d)

down

12.

The inclined plane makes work easier by __________________ the amount of effort that must be applied to raise or lower a load.

a)

reducing

b)

increasing

13.

Which of the following could be a correct answer for finding speed based on the units.

a)

S = 4 miles

b)

S = 4 minutes

c)

S = 4 min/miles

d)

S = 4 miles/min

14.

What is missing in the triangle of knowledge?

a)

speed

b)

distance

c)

time

d)

minutes

15.

The bike is in the bike rack.

a)

balanced force

b)

unbalanced force

16.

The ball is rolling down the hill.

a)

balanced forces

b)

unbalanced forces

17.

A student places a ball on the ground and kicks it hard. The ball moves along the ground. Which statement is true?

a)

The kick decreases the weight of the ball

b)

The kick applies force, which changes the direction of the ball.

c)

The kick decreased the force of gravity acting on the ball.

d)

The kick removes friction between the ball and the ground.

18.
a)
A
b)
B
c)
C
d)
D
19.
a)
A
b)
B
c)
C
d)
D
20.
a)
A
b)
B
c)
C
d)
D
21.
This has one or no moving parts. 
a)
simple machine
b)
complex machine
22.
-a ramp
-flat surface that is higher at one end. 
-helps a person move something up or down from one place to another
a)
inclined plane
b)
pulley
23.
Which is an example of someone using a simple machine to do work?
a)
a boy runs across a football field
b)
a banker counts money
c)
a mother pushes a stroller up a ramp
d)
a girl eats a sandwich