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WorksheetsEnergy and Magnetism
Total questions: 47
Worksheet time: 38mins
Name
Class
Date
1.
What is energy?
a)
It is measured in watts
b)
It is power
c)
It is the ability to do work
d)
It is fluid motion
2.
What is the energy of motion that depends on speed and mass?
a)
chemical energy
b)
kinetic energy
c)
potential energy
d)
heat energy
3.
Can energy be created or destroyed?
a)
Yes, it can be created.
b)
Yes, it can be destroyed.
c)
No, energy is always conserved
d)
None of these
4.
At what position does the cyclist have the least gravitational potential energy?
a)
A
b)
B
c)
C
d)
D
5.
At what position does the rock acquire the greatest potential energy?
a)
A
b)
B
c)
C
d)
D
6.
At what position does the rock have the greatest kinetic energy?
a)
A
b)
B
c)
D
d)
E
7.
Most of the energy that we use on Earth originally came from the ______.
a)
moon
b)
plants
c)
animals
d)
sun
8.
________________ energy is the energy due to the motion (kinetic) and position (potential) of an object.
a)
electrical
b)
chemical
c)
solar
d)
mechanical
9.
Magnetism is a type of ____________
a)
force
b)
book
c)
plant
d)
animal
10.
When two magnets attract, they ______________
a)
push apart
b)
change color
c)
get colder
d)
pull together
11.
Magnets have a north and a south ___________
a)
shape
b)
color
c)
pole
d)
region
12.
What would increase the strength of an electromagnet?
a)
Increasing the amount of current flowing through the wire.
b)
Inserting a wooden core inside the coil
c)
Changing the direction of the current
d)
Decreasing the number of coils of wire
13.
This is a magnet made by an electric current
a)
temporary
b)
permanent
c)
electromagnet
d)
ferromagnet
14.
If you wrap more coils around an electromagnet, it will become...
a)
brighter
b)
stronger
c)
weaker
d)
invisible
15.
This is an example of magnets...
a)
attracting to each other.
b)
repelling each other.
16.
A device that converts electrical energy into mechanical energy
a)
electric motor
b)
solenoid
c)
magnetic field
d)
transformer
17.
These magnets will _______.
a)
move away from each other (repel)
b)
move toward each other (attract)
18.
What substance is attracted to magnet?
a)
lead
b)
silver
c)
water
d)
iron
19.
What must happen for an electromagnet to have a magnetic field?
a)
It must be heated.
b)
It has to be touching another magnet.
c)
It must be lined up with Earth’s magnetic field.
d)
It must be connected to an electrical source.
20.
Electrical energy in solar cells comes from _________ energy from the sun.
a)
Mechanical
b)
Thermal
c)
Radiant
d)
Kinetic
21.
A closed circuit allows the _______________ to flow.
a)
Water
b)
Electricity
c)
Fuel
d)
Rays
22.
If the circuit is not closed, then the electricity cannot flow and the circuit is an ______________ circuit.
a)
Open
b)
Closed
c)
Loose
d)
Radiant
23.
The electrical energy in a battery comes from stored _________________ energy.
a)
Kinetic
b)
Chemical
c)
Thermal
d)
Radiant
24.
The electrical energy in outlets may come from chemical energy(burning fuels) which powers a generator in a __________ ___________.
a)
Tree House
b)
Power Plant
c)
Rubber Band
d)
Kinetic Potential
25.
The wire (conductor) must connect the __________ ___________ to the transformer and then back to the power source to create a closed circuit.
a)
Power Source
b)
Kinetic Potential
c)
Rubber Band
26.
An electrical current produces a(n):
a)
magnetic field
b)
magnetic domains
c)
electrical resistance
d)
both b& c are correct
27.
An example of an insulator is:
a)
iron
b)
silver
c)
copper wire
d)
rubber
28.
An example of a conductor is :
a)
a glass paperweight
b)
a plastic cap
c)
a metal screw
d)
a wooden handle
29.
A lamp changes __________ energy into light energy.
a)
Kinetic
b)
Electrical
c)
Sound
d)
Chemical
30.
What is the transfer of electricity in a motor?
a)
chemical to mechanical
b)
electrical to mechanical
c)
mechanical to electrical
d)
physical to potential
31.
What is the transfer of electricity in a generator?
a)
Mechanical to Electrical
b)
Physical to Potential
c)
Electrical to Mechanical
d)
Yogurt to Light
32.
What can you use to make an electromagnet?
a)
Battery, nail and string
b)
Battery, pencil and wire
c)
Wire, battery and iron ore (nail)
d)
Peanut butter, lampshade, hand sanitizer
33.
In large generators in power plants, ___________ rotate inside a coil of wire to produce an electric current.
a)
Wind
b)
Water
c)
Magnets
d)
Circuits
34.
Which device uses mechanical energy to produce electrical energy?
a)
Electric Motor
b)
Magnet
c)
Generator
d)
Solar Cell
35.
Electric fields are often associated with what other kind of field?
a)
Magnetic Fields
b)
Nuclear Fields
c)
Particle Fields
d)
Corn Fields
36.
What device is made of coils of wire with an electrical current passing through it in order to generate a magnetic field?
a)
Electromagnet
b)
Generator
c)
Electron Magnet
d)
Motor
37.
What force does a magnetic field apply without actually touching the object?
a)
a push or pull
b)
gravity
c)
friction
d)
pressure
38.
What two forces are required for generators and electric motors to work?
a)
magnetism and thermal
b)
electricity and thermal
c)
electricity and magnetism
d)
magnetism and radiant
39.
What is the fan that turns the magnet inside a generator called?
a)
electromagnet
b)
turbine
c)
solar panel
d)
pinstock
40.
What energy do you put IN to a generator?
a)
Mechanical
b)
Electrical
c)
Thermal
d)
Potential
41.
What type of energy comes OUT of a generator?
a)
Mechanical
b)
Electrical
c)
Thermal
d)
Potential
42.
What happens to the strength of an electromagnet as you add more coils around it?
a)
Increases
b)
Decreases
c)
Stays the same
d)
Stops completely
43.
In an electric motor, the energy transformation begins as ----
a)
electrical and becomes chemical
b)
mechanical and becomes electrical
c)
electrical and becomes mechanical
d)
mechanical and becomes chemical
44.
What is the device seen here?
a)
generator
b)
electric motor
c)
electromagnet
d)
magnet
45.
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.
46.
Surrounding every magnet is a __________ __________.
a)
magnetic field
b)
electrical current
c)
another magnet
d)
an enemy
47.
Electricity is the flow of _________.
a)
Protons
b)
Neutrons
c)
Electrons
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