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Unit Test: Energy

Total questions: 82

Worksheet time: 1hrs 6mins

Name
Class
Date
1.

What type of energy is being used?

a)

electromagnetic

b)

mechanical

c)

thermal

d)

sound

2.

What type of energy is being used?

a)

electromagnetic

b)

mechanical

c)

chemical (photosynthesis)

d)

sound

3.
The purpose of the panels is to change solar energy into ____________.
a)
light energy
b)
electrical energy
c)
chemical energy
d)
mechanical energy
4.
According to which law of energy, energy can't be created or destroyed?
a)
First law of motion
b)
The law of tacos
c)
Laws of Energy
d)
law of conservation of energy
5.
Energy of motion is which type of energy?
a)
Potential
b)
Kinetic
c)
Sound
d)
Gravitational
6.
What type of energy is in this picture?
a)
Kinetic
b)
Potential
c)
Chemical
d)
Sound
7.
When plants convert the sun's energy into food, which type of energy is it?
a)
kinetic
b)
chemical
c)
thermal
d)
radiant
8.
A battery converts what type of energy to another?
a)
sound to kinetic
b)
light to heat
c)
mechanical to electrical
d)
chemical to electrical
9.
The glow sticks produce light for a short amount of time. The light from the glow stick is a conversion from what to what?
a)
thermal to light
b)
gravitational to potential
c)
radiant to electrical
d)
chemical to light
10.
Wind turbines and windmills convert what energy to another?
a)
Kinetic to electric
b)
Gravitational potential to electric
c)
Mechanical to potential
d)
Thermal to sound
11.
Energy that is stored in bonds between atoms is:
a)
Mechanical energy
b)
Chemical energy
c)
Kinetic energy
d)
Nuclear energy
12.
Energy that comes from the nucleus of an atom. A form of potential energy.
a)
chemical energy
b)
Nuclear energy
c)
Sound energy
d)
Electrical energy
13.
What machine changes chemical energy into heat, light and sound energy
a)
blender
b)
firecracker
c)
lightbulb
d)
apple
14.

Which of the following is NOT an example of chemical energy?

a)

A glow stick

b)

A battery

c)

A rock about to fall off a cliff

d)

A burning match

15.
Heat transfer in boiling water.
a)
Conduction
b)
Convection
c)
Radiation
16.
Heat transfer in boiling water.
a)
Conduction
b)
Convection
c)
Radiation
17.
Heat transfers from an area of ____temperature to an area of ___ temperature.
a)
high to low
b)
low to high
c)
high to high
d)
It can travel high to low and low to high. 
18.

Objects with MORE MASS have______________

a)

lower potential energy

b)

lower number of atoms

c)

higher thermal energy

d)

higher temperature

19.

Temperature always measures the ___________ movement of molecules

a)

median

b)

mode

c)

total

d)

average

20.

As temperature increases, molecules _____________

a)

move slower

b)

move the same

c)

move faster

d)

stop moving

21.

Which type of heat transfer is shown?

a)

convection

b)

conduction

c)

radiation

d)

ironing

22.
TRUE or FALSE?  Frying pans made for cooking are made of metal because metals are good CONDUCTORS of heat energy.
a)
True
b)
False
23.

Transfer of energy by electromagnetic waves is called

a)

conduction

b)

convection

c)

radiation

d)

infrared proton rays (sounds cool, but I made it up so don't pick this one)

24.

A material that doesn’t allow heat to pass through it easily is a/an

a)

conductor

b)

insulator

c)

metal

d)

rock

25.

When heat is passed on by direct contact of particles, this occurs

a)

conduction

b)

condensation

c)

convection

d)

radiation

26.

Temperature scale starting with absolute zero at 0 is the

a)

coldness scale

b)

Farenheit scale

c)

Celcius scale

d)

Kelvin scale

27.

The diagram above represents a thermometer. Which of the following best explains how the thermometer works?

a)

Liquid changes to a gas when heated.

b)

Gas changes to a liquid when heated.

c)

Liquids expand when heated and contract when cooled.

d)

Liquids contract when heated and expand when cooled.

28.

Heat

a)

The total kinetic and potential energy of all the particles in an object.

b)

Energy that is transferred from a warmer object to a cooler object.

c)

A measure of the average kinetic energy of the particles in a substance.

d)

The heating of a substance that causes its particles to move more quickly.

29.

Thermal Energy

a)

The total kinetic and potential energy of all the particles in an object.

b)

Energy that is transferred from a warmer object to a cooler object.

c)

A measure of the average kinetic energy of the particles in a substance.

d)

The heating of a substance that causes its particles to move more quickly.

30.

In this example, explain the movement of thermal energy in the glass.

a)

Heat is moving from the lemonade to the glass

b)

Heat is moving from the lemonade to the ice

c)

Cold is moving from the ice to the lemonade

d)

Cold is moving from the ice to the glass

31.

This Styrofoam cup is a good example of a _________.

a)

Conductor

b)

Insulator

c)

Drinking device

d)

Solid

32.

What energy transformation occurs as howler monkeys loudly call to each other in the forest?

a)

Chemical --> Mechanical --> Sound

b)

Chemical --> Sound --> Thermal

c)

Sound --> Chemical --> Radiant

d)

Mechanical --> Chemical --> Sound

33.

What energy transformation occurs during photosynthesis?

a)

Chemical --> Radiant

b)

Thermal --> Chemical

c)

Radiant --> Chemical

d)

Mechanical --> Thermal

34.

What energy transformation occurs as a mouse produces body heat?

a)

Chemical --> Thermal

b)

Thermal --> Chemical

c)

Electrical --> Thermal

d)

Thermal --> Mechanical

35.
What is the energy transformation?
a)
Kinetic to Mechanical and Electrical
b)
Chemical to Thermal and Electromagnetic (light)
c)
Electromagnetic to Chemical and Electrical
d)
Kinetic to Sound and Chemical
36.
Which type of energy transformation occurs when a flashlight shines?
a)
chemical → thermal → electrical
b)
chemical → electrical → light
c)
thermal → chemical → light
d)
chemical → electrical → chemical
37.

the continuous flow of electrical charges through a material

a)

electron

b)

electric force

c)

electric field

d)

electric current

e)

static electricity

38.

the region around a charged object where the object's electric force is exerted on other charged objects

a)

electron

b)

electric force

c)

electric field

d)

electric current

e)

static electricity

39.

the force between charged objects

a)

electron

b)

electric force

c)

electric field

d)

electric current

e)

static electricity

40.

a negatively-charged particle that moves around the outside of the nucleus of an atom

a)

electron

b)

electric force

c)

electric field

d)

electric current

e)

static electricity

41.

either end of a magnetic object, where the magnetic force is strongest

a)

magnet

b)

magnetic force

c)

magnetic pole

d)

magnetic field

42.

Where are the strongest and weakest parts of the magnetic field shown in the diagram?

a)

strongest: A, weakest: B

b)

strongest: A, weakest: D

c)

strongest: C, weakest: A

d)

strongest: C, weakest: B

43.

Which of the following statements describes the similarities between electric and magnetic fields?

a)

The field lines in both magnetic and electric fields are always straight.

b)

Each charged particle and magnet have both a positive and negative side.

c)

Opposite charges and poles are always attracted to each other.

d)

The potential energy increases as like charges or poles get farther apart.

44.

How does the magnetic field protect life on Earth?

a)

The magnetic field directs charged particles toward the poles and then past Earth.

b)

The magnetic field directs charged particles toward the equator and then past Earth.

c)

The magnetic field absorbs the charged particles coming from the sun.

d)

The magnetic field directs charged particles toward the poles then absorbs them.

45.

How does separating two magnets, as shown in the diagram, affect the energy in the system?

a)

Separating the magnets increases potential energy.

b)

Separating the magnets increases kinetic energy.

c)

Separating the magnets decreases potential energy.

d)

Separating the magnets decreases the electric energy.

46.

Which of the following would NOT increase the magnitude of the electric force between the positively and negatively charged objects?

a)

increasing the amount of positive charges

b)

increasing the amount of negative charges

c)

increasing the distance between the charged objects

d)

decreasing the distance between the charged objects

47.
An object through which electrons can easily flow is called a(n) ___________.
a)
Conductor
b)
Insulator
48.
What are the 3 basic components of a circuit?
a)
Energy source, Load, Energy Pathway
b)
Battery, Energy source, Energy Pathway
c)
Battery, Wire, Energy Pathway
d)
ALL of them
49.
Gives a constant supply of electrons. 
a)
Power source
b)
Load
c)
Energy Pathway
50.
A device that uses electricity. 
a)
Load 
b)
Battery Source
c)
Energy pathway
51.
A wire is an example of _____.
a)
Battery source 
b)
Energy pathway
c)
Load
d)
All of them
52.
How are electromagnets different from magnets?
a)
magnets can be turned on/off
b)
you can turn an electromagnet on/off
c)
magnets are more powerful
d)
magnets have a North and South pole
53.
Like poles on a magnet
a)
attract
b)
repel
54.
What is the metal center of an electromagnet called?
a)
The current
b)
the wire
c)
the coil
d)
the core
55.
What is this?
a)
magnet
b)
electromagnet
c)
series circuit
d)
parallel circuit
56.
The Earth produces its own magnetic field.  True or false?
a)
False
b)
True
57.
How do you make an electromagnet stronger?
a)
Add a motor and/or lightbulbs
b)
Add more light bulbs and/or wire coils
c)
add more wire coils and/or a switch
d)
add more wire coils and/or batteries
58.
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
a)
Add more coils of wire to the nail.
b)
Use a smaller battery.
c)
Reverse the poles of the magnet.
d)
Remove all the coils and the nail.
59.
Surrounding every magnet is a __________  __________.
a)
magnetic field
b)
electrical current
c)
another magnet
d)
an enemy
60.
In order for an electromagnet to be formed, an __________ current must pass through a coil of __________ wrapped around an ________ core.
a)
wire, iron, electric
b)
electric, wire, iron
c)
iron, electric, wire
d)
excited, hair, apple
61.

What are Motors?

a)

machines that convert electrical energy to mechanical energy

b)

machines that convert mechanical energy to electrical energy

c)

transfers voltages from one value to another

d)

machines that transfer energy to matter

62.

which of the following is a picture of a transformer

a)
b)
c)
d)
63.

What kind of energy transfer occurs in a generator?

a)

mechanical to electrical

b)

electrical to mechanical

c)

thermal to electrical

d)

mechanical to thermal

64.

What type of energy would be EXERTED by a motor?

a)

thermal

b)

electrical

c)

mechanical

d)

potential

65.

Transformers only transfer electricity only if...

a)

the current is alternating

b)

there's at least one coil (primary)

c)

none of these

d)

all of these

66.

What is the function of the generator?

a)

Convert electrical energy to mechanical (kinetic) energy

b)

Convert electrical energy to thermal energy (heat)

c)

Convert mechanical (kinetic) energy to electrical energy

67.

What type of transformer is A?

a)

Step up

b)

Step down

68.

At what part of the atom is the arrow pointing?

a)

electron

b)

neutron

c)

proton

d)

nucleus

69.

At what part of the atom is the arrow pointing?

a)

Cloud

b)

energy level

c)

electron

d)

neutron

70.

At what part of the atom is the arrow pointing?

a)

proton

b)

neutron

c)

electron

d)

nucleus

71.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

72.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
73.
Subatomic particles that are neutral in charge
a)
Neutrons
b)
Protons
c)
Nucleus 
d)
Electrons
74.

The definition of energy is

a)

the cause for change and not produce work

b)

the inability to do something

c)

the ability to do work and cause change

75.

What happens when an electric current flows through a wire?

a)

The wire begins to spin.

b)

Nothing happens.

c)

A field of gravity is created around the wire.

d)

A magnetic field is created around the wire.

76.

The south ends of two magnets will _________ each other.

a)

repel

b)

attract

77.

________________ are the attractive and repulsive forces between two poles.

a)

Magnetic forces

b)

Electric forces

c)

Magnetic charges

d)

Electric charges

78.

What does this image show?

a)

Parallel circuit

b)

Series circuit

c)

Magnet

d)

Electromagnet

79.

Opposite charges do what?

a)

Attract

b)

Repel

80.

The area of magnetic force around a magnet is known as its ____________.

a)

magnetism

b)

magnetic current

c)

magnetic field

d)

electric current

81.

How can a magnet be used to produce an electric current?

a)

Hold a magnet next to a piece of wire.

b)

Wrap wire around a magnet.

c)

Spin the magnet around inside a coil of wire.

82.

What do electric generators do

a)

transform mechanical energy to electrical energy

b)

transform mechanical energy to sound

c)

transform electrical energy to mechanical energy

d)

transform electrical energy to potential energy

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