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Y10 Physics Revision - ENERGY

Total questions: 51

Worksheet time: 39mins

Name
Class
Date
1.
Niagara Falls is a good example of
a)
Kinetic energy being transformed into potential energy
b)
Potential energy being transformed into kinetic energy
c)
Energy being created
d)
Energy being destroyed
2.
 The law of conservation of energy states that when one form of energy is converted into another,
a)
Energy is destroyed in the process
b)
Energy is created in the process
c)
No energy is destroyed in the process
d)
Energy is lost in the process
3.
Which energy-conversion process occurs whenever coal is burned at a power station?
a)
chemical to nuclear
b)
chemical to sound
c)
chemical to electrical
d)
mechanical to electrical
4.
When energy moves from one form to another it is said to be _________________
a)
Transformed
b)
Eliminated
c)
Lost.
d)
Created 
5.
Which has the most kinetic energy?
a)
a basketball rolling down a hill
b)
a bus stopped at the top of a hill
c)
a dump truck driving down a hill
d)
a golf ball sitting at the top of the hill
6.
Which is an example of chemical energy?
a)
a horse pulling a cart
b)
a dog digesting food
c)
a marching band in a parade
7.
The energy associated with motion is called
a)
Kinetic energy
b)
Elastic potential energy
c)
Gravitational potential energy
d)
Nuclear energy
8.
An example of something that stores chemical energy is
a)
lightning
b)
a microwave
c)
a match
9.
When you rub your hands together on a cold day, you use friction to convert
a)
Mechanical energy into thermal energy
b)
Thermal energy into nuclear energy
c)
Nuclear energy into electrical energy.
d)
Electrical energy into radiant energy
10.
Which of the following has kinetic energy?
a)
a rock poised for a fall
b)
an archer's bow that is drawn back
c)
a rolling bowling ball
11.
When riding a roller coaster, you go up and down many hills. When do you have the maximum potential energy? 
a)
at the top of the hill
b)
as you go down each hill
c)
at the bottom of the each hill
d)
as you go up each hill
12.
Potential energy that depends on height is called
a)
Kinetic energy
b)
Elastic potential energy
c)
Nuclear energy
d)
Gravitational potential energy
13.
When you swing a bat and hit a baseball, the ball flies into the outfield. What happens to the energy you used to swing the bat?
a)
It disappears
b)
It remains in the bat.
c)
It is transferred to the baseball.
d)
It is converted into potential energy.
14.
The energy in a battery is _______ energy.
a)
kinetic
b)
potential
c)
mechanical
d)
nuclear
15.
Energy from a compressed spring would be an example of...
a)
kinetic
b)
elastic
c)
gravitational
d)
chemical
16.
How much work is being done with 200 N of force over 426 meters?
a)
85,200 J
b)
45,620 J
c)
90,480 J
d)
62,329 J
17.
The SI unit of work is?
a)
Joules
b)
Watts
c)
Newtons
d)
meters
18.
A force exerted over a distance to move an object is ______________________.
a)
power
b)
work
c)
momentum
d)
Watt
19.
If 150 Joules of work is needed to move a box 10 meters, what force was used? 
a)
1500 N
b)
15 N
c)
1.5 N
d)
150 N
20.
If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?
a)
272 m
b)
17 m
c)
4.05 m
d)
272 cm 
21.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
22.
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 
23.
When you release a stretched rubber band, the rubber band has ________ energy. 
a)
kinetic 
b)
potential
c)
none of the above
d)
all of the above 
24.
At what position does the rock have the greatest kinetic energy?
a)
A
b)
B
c)
D
d)
E
25.
Wood, batteries, gasoline, and  food are all examples of ________________________.
a)
gravitational potential energy
b)
elastic potential energy
c)
chemical potential energy
d)
None of the above
26.

How much gravitational potential energy does a 100kg (220lb.) skydiver have if they jump from 4000 meters?

a)

3920000 J

b)

294 J

c)

180000 J

d)

1225 J

27.

A 6kg cat misjudges a jump and falls 5 meters. How much gravitational potential energy does the cat have? (The cat is fine by the way.)

a)

294 J

b)

180000 J

c)

1225 J

d)

3920000 J

28.

What is the kinetic energy of a 1,600kg Mustang travelling at 15 m/s (33mph)

a)

180000 J

b)

294 J

c)

1225 J

d)

3920000 J

29.

A 50kg (100lb) person is running at 7m/s (about 16 mph). How much kinetic energy do they have?

a)

1225 J

b)

180000 J

c)

294 J

d)

3920000 J

30.

What is the unit for mass?

a)

kilogram (kg)

b)

meter (m)

c)

Newton (N)

d)

Joule (J)

31.

What is the unit for distance?

a)

kilogram (kg)

b)

meter (m)

c)

Newton (N)

d)

Joule (J)

32.

What is the unit for force?

a)

kilogram (kg)

b)

meter (m)

c)

Newton (N)

d)

Joule (J)

33.

What is the unit for energy?

a)

kilogram (kg)

b)

meter (m)

c)

Newton (N)

d)

Joule (J)

34.

What is the formula for speed?

a)

distance / time

b)

mass x acceleration

c)

velocity / time

d)

½(mass) x (velocity)2

e)

(mass) x (acceleration of gravity) x (height)

35.

What is the formula for force?

a)

distance / time

b)

mass x acceleration

c)

velocity / time

d)

½(mass) x (velocity)2

e)

(mass) x (acceleration of gravity) x (height)

36.

What is the formula for acceleration?

a)

distance / time

b)

mass x acceleration

c)

velocity / time

d)

½(mass) x (velocity)2

e)

(mass) x (acceleration of gravity) x (height)

37.

What is the formula for kinetic energy?

a)

distance / time

b)

mass x acceleration

c)

velocity / time

d)

½(mass) x (velocity)2

e)

(mass) x (acceleration of gravity) x (height)

38.

What is the formula for gravitational potential energy?

a)

distance / time

b)

mass x acceleration

c)

velocity / time

d)

½(mass) x (velocity)2

e)

(mass) x (acceleration of gravity) x (height)

39.

A 2kg television falls from 1 meter. How much energy does it have?

a)

19.6 J

b)

196 J

c)

2 J

d)

9.8J

40.

Efficiency is calculated by Energy Out divided by Energy In, expressed as a percentage

a)

False

b)

True

41.

Total energy = 200J
Useful energy = 20J

Workout the efficiency of this lightbulb.
 efficiency = useful enegytotal energy in ×100efficiency\ =\ \frac{useful\ enegy}{total\ energy\ in}\ \times100  

a)

100%

b)

80%

c)

40%

d)

10%

42.

This car needs 8600J of energy to power it. If 5000J is changed into useful energy, how much energy is wasted?

a)

13600J

b)

3600J

c)

5000J

d)

8600J

43.

As a pendulum gets longer, what happens to the period?

a)

doesn't change

b)

decreases

c)

increases

44.

What causes a pendulum to slow down?

a)

gravity

b)

friction or air resistance

c)

the length of the string

45.

At what point in the swing of a pendulum is the bob moving fastest?

a)

at the top of the arc

b)

at the bottom of the arc

46.

Which of these does not affect the period of a pendulum?

a)

length

b)

gravity

c)

mass

47.
The force of gravity is also known as
a)
Mass
b)
Weight
c)
Distance
d)
Acceleration
48.
An object is falling but is not accelerating. What do you know?
a)
Gravity is stronger than air resistance
b)
Air resistance is stronger than gravity
c)
Air resistance is equal to gravity
d)
Forces are unbalanced
49.
Where would you have to travel to reduce your weight but not lose any mass?
a)
The moon
b)
The Sun
c)
Jupiter
d)
Saturn
50.
When does a falling object experienced balanced forces?
a)
Terminal velocity
b)
During free fall
c)
When it first starts to fall
d)
Just before it hits the ground
51.

The acceleration of objects falling on Earth due to gravity is

a)

9.8 m/s

b)

9.8 m/s2

c)

9.8 g/mL

d)

9.8 g/m/m

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