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TEST YOUR KNOWLEDGE

Total questions: 40

Worksheet time: 25mins

Name
Class
Date
1.

What is kinetic energy?

a)

energy due to height

b)

energy of motion

c)

energy of friction

d)

energy stored in chemical bonds

2.

When a roller coaster cart falls towards the ground, what happens to its gravitational potential energy?

a)

Increases

b)

Decreases

c)

Stays the same

d)

Nothing

3.

The unit of work is

a)

watt

b)

hertz

c)

joule

d)

pascal

4.

Rank in order, from largest to smallest, the gravitational potential energies of the balls.

a)

1 > 2 = 4 > 3

b)

1 > 2 > 3 > 4

c)

3 > 2 = 4 > 1

d)

3 > 2 > 4 > 1

5.

What is the unit for power?

a)

Hertz

b)

watt

c)

Joule

d)

Newton

6.

How much power is required to raise a 200-kg crate a vertical distance of 2 m in a time of 4 s?

a)

400 W

b)

1000 W

c)

1600 W

d)

4000 W

7.
Gravitational potential energy depends on the ________ and ________ of the object. 
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction 
8.
If an object moves from a high place to a lower place, will it gain or lose potential energy?
a)
lose
b)
gain
c)
neither
d)
both
9.

Energy from a compressed spring would be an example of...

a)

kinetic energy

b)

elastic potential energy

c)

gravitational potential energy

d)

chemical energy

10.
The SI unit of work is?
a)
Joules
b)
Watts
c)
Newtons
d)
meters
11.

The equation for work is

a)

work = power x mass

b)

work = power / time

c)

work = force x distance

d)

work = distance x time

12.

The equation for KINETIC ENERGY is

a)

KE = mass x gravity

b)

KE = 1/2 height x speed

c)

KE = mass2

d)

KE = 1/2 mass x speed2

13.

_______________ is done when a force acts on an object and the object moves in the direction of the force.

a)

Work

b)

Energy

c)

Power

14.

Energy is

a)

how fast you do something.

b)

the ability to do work.

c)

confusing.

d)

how fast you lift something.

15.
The Law of Conservation of Energy states that total amount of energy in a closed system will always
a)
stay the same
b)
increase
c)
decrease
d)
cannot be determined
16.

A force is a

a)

Push

b)

Pull

c)

Both Push or Pull

d)

Neither Push or Pull

17.

The force that acts towards the centre of the Earth.

a)

Gravitational force

b)

Normal force

c)

Friction force

d)

Elastic force

18.

The force that produced when an object is in contact with the surface

a)

Gravitational force

b)

Normal force

c)

Friction force

d)

Elastic force

19.

The force that opposes the motion of the object when two surfaces are in contact with each other.

a)

Gravitational force

b)

Normal force

c)

Friction force

d)

Elastic force

20.

force is ____________ quantity

a)

scalar

b)

vector

21.
Force depends on
a)
Force
b)
mass
c)
acceleration
d)
mass and acceleration 
22.
The SI Unit of force is
a)
Pascal
b)
Meter/second
c)
Newton
d)
kg
23.
Which force produces a change in motion?
a)
unbalanced force
b)
balanced force
c)
gravitational force
d)
frictional force
24.
How do you know if and object has balanced force?
a)
It only has one force
b)
it's moving
c)
It has equal forces on all sides
d)
it's staying still
25.
A buoyant force is a(n) ______ force 
a)
Upward
b)
Downward
c)
Side ways
26.
An object will _______ if the weight of it is equal to the weight of the water in which it is in. 
a)
Float
b)
Sink
c)
Expand
d)
Shrink
27.
An object will ______ if its' density is greater than the density of the fluid it is in. 
a)
Expand
b)
Shrink
c)
Float
d)
Sink
28.
What class of lever is this?
a)
1st class
b)
2nd class
c)
3rd class
d)
None of the above
29.
Which type of lever is this?
a)
First Class Lever
b)
Second Class Lever
c)
Third Class Lever
d)
Coach  Class Lever
30.
A see saw is an example of a:
a)
1st class lever
b)
2nd class lever
c)
3rd class lever
31.
A wheelbarrow is an example of a:
a)
1st class lever
b)
2nd class lever
c)
3rd class lever
32.
Levers make work ________.
a)
Harder
b)
Easier
c)
Alright
d)
OK
33.
WHAT ARE THE 3 MAIN PARTS OF A LEVER?
a)
FOOT, EFFORT, REPORT
b)
FULCRUM, STRUCTURE, EFFORT
c)
FULCRUM, EFFORT, LOAD
34.
In second class lever, the load is between the fulcrum and _______.
a)
Load
b)
Effort
c)
Stone
35.

What class lever is a pair of scissors?

a)

1st

b)

2nd

c)

3rd

36.

Which of the following would increase the pressure on a gas system?

a)

Increase the Temperature

b)

Pump in more gas

c)

Decrease the volume

d)

All of these

37.
What is the unit of measurement for pressure?
a)
pascal
b)
grams
c)
milliters
d)
meters
38.
Pressure decreases when the surface area over which a force is applied increases
a)
True
b)
False
39.

Atmospheric pressure increases as you move towards lower Altitude and decreases as you move into higher Altitude

a)

True

b)

False

40.

Diagram shows the design of a dam. Why does the thickness of the dam increase with its depth?

a)

The design of this structure is stronger.

b)

Water pressure increases with depth.

c)

The cost of construction is lower.

d)

Water pressure decrease with depth

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