WorksheetsWaves, Electricity, & Magnetism
Total questions: 47
Worksheet time: 24mins
Which of the following would increase the strength of an electromagnet?
Decrease the voltage by using a smaller power source
Increase the number of turns or loops of wire around the core of the electromagnet.
Use string as the wire material.
Use a thinner wire.
What is/are the difference(s) between a magnet and an electromagnet?
A magnet can be turned on/off.
An electromagnet is stronger.
An electromagnet can be turned on/off.
Both A and B
Both B and C
A _______________ transforms mechanical energy into electrical energy.
magnetic field
electromagnet
electric motor
generator
The area of magnetic force around a magnet is known as its ______________.
magnet
magnetism
magnetic field
electrical current
Electrons have what type of charge?
positive
negative
neutral
none of the above
Protons have what type of charge?
positive
negative
neutral
none of the above
_________________ is the attractive and repulsive forces between two poles.
electrical forces
electrical current
magnetic forces
When _________ flow in a circuit, a current is produced.
protons
neutrons
electrons
Opposite charges _________
attract
repel
a and b
none of the above
The North ends of two magnets will ______ one another.
repel
attract
How can a magnet be used to produce an electric current?
Hold the magnet next to a wire.
Connect a wire to each end of the magnet.
Wrap wire around the magnet.
Spin the magnet around inside a coil of wire.
When an electric current flows through a wire:
a gravitational field is created around the wire.
the wire becomes very cold.
the wire begins to spin.
a magnetic field is created around the wire.
Electric current is measured in ___________.
Hertz (Hz)
Newtons (N)
amperes (A)
none of the above
Which of the following uses magnets?
Speakers
MRI Machines
generators
all of the above
A charged atom is called a(n) _________.
proton
ion
electron
both b and c
What will happen if you increase the electric current that is flowing through an electromagnet?
The magnet will become weaker.
The poles of the magnet will reverse.
The magnet will become stronger.
The magnet will become permanent.
Which of the following procedures would increase the amount of electricity that is produced in a generator?
Add more coils of wire.
Spin the magnet more slowly
Use a weaker magnet
Reduce the number of coils of wire.
Which statement about electromagnetic waves is true?
They move slowly.
They carry matter from one place to another
They need a medium to travel through.
They can travel through a vacuum.
Light or sound going through air then a glass of water and then back into the air is refraction. However, it is also an example of?
reflection
absorption
transmission
The wavelength of a longitudinal wave is the distance between a compression and a rarefaction.
True
False
You are learning how to spear fish. You see the fish, but when you throw your spear directly at the fish you miss. Why?
Light is reflected because of absorption.
Light is refracted because of absorption.
Light is reflected because of transmission.
Light is refracted because of transmission.
If the angle going toward a mirror is 45 degrees, what degree angle does it bounce off the mirror?
45 degrees
90 degrees
180 degrees
Why does a dark colored car heat up more than a light colored car?
It reflects all light rays.
It refracts all light rays.
It absorbs all light rays.
It transmits all light rays.
You are standing in your house looking out your window at the rain. Your window is an example of ......
Transparent
Opaque
Translucent
Light bending as it passes through a prism causes __________ to happen.
reflection
refraction
diffraction
absorption
An electromagnetic wave is made up of both electric and magnetic fields.
True
False
The electromagnetic waves are classified as longitudinal waves.
True
False
Visible light can be separated into various colors to form a
spectrum
thermogram
MRI
X-ray picture
Electromagnetic waves can transfer energy without a
medium
magnetic field
change in direction
thermogram
The ________ is the distance between two crests of a wave.
amplitude
wavelength
frequency
period
Waves can travel quickly in a _____________ because the molecules are closely packed and physically bonded together.
liquid
gas
solid
none of the above
The change in direction of a wave when it encounters an obstacle or edge.
reflection
diffraction
refraction
amplitude
Type of wave that must travel through a medium.
mechanical wave
electromagnetic wave
All of the following are examples of electromagnetic waves except:
X-ray waves
visible light waves
sound waves
Radio waves
The bouncing back of a wave when it meets a surface or boundary.
reflection
refraction
diffraction
The bending of waves as they pass from one medium to another at an angle.
reflection
refraction
diffraction
In a longitudinal wave, _______________ are where medium particles are close together.
rarefaction
compression
transverse
electromagnetic
What does the Letter D represent?
amplitude
crest
trough
wavelength
What does the Letter B represent?
amplitude
crest
wavelength
trough
What does the Letter C Represent?
crest
wavelength
amplitude
trough
Sound waves are
transverse waves
longitudinal waves
circular waves
Light waves are
transverse waves
longitudinal waves
circular waves
Light waves
require a medium
cannot travel through solids
cannot travel through liquids
are electromagnetic waves
The number of complete waves that pass a given point in a certain amount of time.
wavelength
trough
amplitude
Frequency
Which type of waves have amplitude?
transverse waves
longitudinal waves
both a and b
none of the above
What kind of wave is pictured?
longitudinal wave
transverse wave
sound wave
What type of wave is pictured?
transverse wave
longitudinal wave
electromagnetic wave
none of the above
