WorksheetsTest Electromagnetic Waves
Total questions: 40
Worksheet time: 32mins
Electromagnetic waves vary in
the speed they travel in a vacuum.
wavelength and frequency.
the way they reflect.
the orientation of their electric and magnetic fields.
To calculate the frequency of an electromagnetic wave, you need to know the speed of the wave and its
wavelength.
intensity.
refraction.
amplitude.
Light acts like
a wave.
a particle.
Both a wave and a particle
neither a wave nor a particle.
Which of the following occurs as light travels farther from its source?
Far from the source, photons come together in a small area.
The intensity of light increases as photons move away from the source.
The source gives off less light as photons move away from it.
Far from the source, photons spread over a larger area.
Infrared rays have a shorter wavelength than
Ultraviolet ray.
X-rays.
radar waves.
gamma rays
The full range of frequencies of electromagnetic radiation is called
visible light.
radio waves.
the electromagnetic spectrum.
invisible radiation.
The waves with the longest wavelengths in the electromagnetic spectrum are
Infrared rays.
radio waves
gamma rays
X-rays
The visible light spectrum ranges between
radar waves and X-rays.
television waves and infrared rays.
infrared rays and ultraviolet rays.
ultraviolet rays and gamma rays.
X-ray photographs show softer tissue
as invisible.
as dark, highly exposed areas.
the same as dense bones.
as bright white areas.
Which of the following occurs as a light wave bends when it passes from one medium into another?
constructive interference
refraction
destructive interference
reflection
Cellular telephones utilize
radar waves.
very high frequency waves.
very low frequency waves.
microwaves.
Light in the form of a particle that has discrete amount of energy is called a
Charm
Photon
Exciton
Muon
Which is an example of a radio wave
television
heat lamp
vision
sun light
Select the correct order of waves on the EMS from low to high energy
Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma
Gamma, X-ray, Ultra, Vis, Infra, Micro, Radio
Vis, Micro, Infra, Ultra, X-ray, Gamma, Radio
Micro, Radio, Vis, Infra, Ultra, X-ray, Gamma
How are Electromagnetic waves different from Mechanical waves?
EM waves have very short wavelengths
EM waves transmit energy instead of matter
EM waves can travel through the vacuum of space (without particles)
EM waves can change direction by reflection
Which is true about the speed of radio waves compared to light waves? They are...
less energy & frequency, but still the SAME speed as the speed of light (300,000,000 m/s)
less energy & frequency, so LESS than the speed of light (300,000,000 m/s)
smaller wavelength, so LESS than the speed of light (300,000,000 m/s)
more energy & frequency, so MORE than the speed of light (300,000,000 m/s)
High frequency in EM waves equals
high energy and short wavelength
high energy and long wavelength
low energy and short wavelength
low energy and long wavelength
The _______________ determines the color of visible light.
wavelength (and frequency)
speed
amplitude
particles of the medium
Put the visible light colors in order from SHORTEST wavelength (highest frequency) to longest wavelength (lowest frequency)
Violet, Indigo, Blue, Green, Orange, Yellow, Red
Red, Yellow, Green, Orange, Violet, Blue, Indigo
Red, Orange, Yellow, Green, Blue, Indigo, Violet
A particle of light is called a...
Photoelectron
Photon
Proton
Electron
What color of light has the greatest energy per photon?
Red
Green
Blue
Violet
The energy of photoelectrons emitted from a metal surface can be increased by
using light of higher frequency.
using light of longer wavelength.
using light of higher intensity.
using monochromatic, polarized light.
True or False: Polarized sunglasses do not allow any light to "pass through."
True
False
Polarized glasses makes the scenery appear slightly _______________ because the absorb or reflect some of the light.
brighter
darker
What electromagnetic wave do humans emit as heat energy?
infrared light
ultraviolet light
visible light
microwaves
Which answer best describes FM waves?
Amplitude changes, Frequency constant
Amplitude constant, Frequency changes
Less energy than AM waves
Do not pass through the ionosphere
