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Est8: Unit 7 "Energy"

Total questions: 35

Worksheet time: 22mins

Name
Class
Date
1.

Energy is the ability to cause _________.

a)

change

b)

problems

c)

channels

d)

solutions

2.

Energy is measured in _________.

a)

joules

b)

kilometers

c)

newtons

d)

meters per second

3.

When you ride a playground swing, your potential energy is greatest at the _________ point.

a)

highest

b)

lowest

c)

mid

d)

far

4.

__________ energy travels from the Sun to Earth and is transformed into chemical energy by plants.

a)

Chemical

b)

Solar

c)

Mechanical

d)

Kinetic

5.

As mass decreases, kinetic energy ________.

a)

decreases

b)

increases

c)

stays the same

d)

is not related

6.

Lowering an object __________ its potential energy.

a)

decreases

b)

increases

c)

does not change

d)

doubles

7.

The sum of potential and kinetic energy in a system is called the ________ energy.

a)

mechanical

b)

solar

c)

chemical

d)

electrical

8.

Energy from the Sun and energy from food are just different forms of the same thing.

a)

True

b)

False

9.

Carbohydrates and fats provide our bodies with energy in the form of ________.

a)

calories

b)

cookies

c)

newtons

d)

meters

10.

Increasing the speed of an object ____ its potential energy.

a)

changes

b)

decreases

c)

does not affect

d)

increases

11.

The kinetic energy of an object increases as its ____ increases.

a)

gravitational energy

b)

heat energy

c)

potential energy

d)

velocity

12.

The SI unit for energy is the ____.

a)

calorie

b)

joule

c)

kilogram

d)

meter per second

13.

A bus engine transfers chemical potential energy into ____ so that the bus moves.

a)

thermal energy

b)

electrical energy

c)

gravitational potential energy

d)

kinetic energy

14.

In a nuclear fusion reaction, mass is transformed into ____.

a)

matter

b)

energy

c)

nuclei

d)

light

15.

According to the law of conservation of energy, the total amount of energy in the universe ____.

a)

remains constant

b)

increases

c)

changes constantly

d)

decreases

16.

Stored energy is also known as ______ energy.

a)

kinetic

b)

potential

c)

mechanical

d)

none of these

17.

Energy stored by things attracted to each other by the force of gravity is called _________ potential energy.

a)

gravitational

b)

elastic

c)

mechanical

d)

none of these

18.

In order for work to be done on an object, the object must ______.

a)

have a force applied in any direction

b)

move in a direction opposite of the applied force

c)

move in the direction of the applied force

d)

none of these

19.

What location on the coaster has the greatest potential energy

a)

W

b)

X

c)

Y

d)

Z

20.

Which location has the least potential energy but the most kinetic energy.

a)

W

b)

X

c)

Y

d)

Z

21.

A ball has 100 J of potential energy when it is on a shelf. What happens to the potential energy and the kinetic energy as the ball falls, and find the amount of kinetic energy the ball has at the instant it hits the floor?

a)

Greater than 100 Joules because it is speeding up

b)

100 Joules if you neglect the energy lost due to friction

c)

Less than 100 Joules because the energy is lost

d)

none of these

22.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
23.
What kind of energy is in a person climbing a ladder?
a)
Potential
b)
Kinetic
c)
Both
24.
Energy can be _____________ or changed from one type to another.
a)
destroyed
b)
transferred
c)
created
d)
ignored
25.
Energy due to motion is ____________ energy. 
a)
Potential 
b)
Energy
c)
Kinetic
d)
Friction
26.
Energy is the ability to do _____________ or cause change.
a)
work
b)
rest
c)
experiments
d)
science
27.

The blades of a toy helicopter spin when its circuit is connected to a battery. Which sequence below correctly identifies the energy changes taking place in the helicopter?

a)

chemical to electrical to potential

b)

chemical to electrical to mechanical

28.

Which of the following gadgets best shows the transformation of energy from electrical to mechanical with the correct reasoning?

a)

A light bulb because electricity is being used to create light and heat.

b)

A fan because electricity is being used to spin the blades of the fan.

29.
Energy can be created.
a)
True
b)
False
30.
Energy cannot be destroyed.
a)
True 
b)
False
31.
The Law of Conservation of Energy states:
a)
Energy can created or destroyed but not transformed 
b)
Energy cannot be created or destroyed, it can only transformed
c)
Energy can't be created, destroyed or transformed
32.

What is energy?

a)

moving energy

b)

stored energy

c)

renewable energy

d)

The ability to do work.

33.

What is kinetic energy?

a)

moving energy

b)

potential energy

c)

stored energy

d)

renewable energy

34.
YOUR BODY OBTAINS ENERGY FROM THE FOOD YOU EAT. WHAT IS THE FORM OF ENERGY IN FOOD?
a)
KINETIC
b)
ELASTIC
c)
GRAVITATIONAL
d)
CHEMICAL
35.
What is the energy of position or shape that depends on weight and height, also called stored energy?
a)
Energy
b)
Kinetic energy
c)
Potential energy
d)
Sound energy

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