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Q.1
In AM waves what remains constant?
Frequency
Amplitude
Wavelength
Crests
Q.2
Which waves pass through the atmosphere and they are not reflected back toward Earth?
FM
AM
Radio
Microwa
Q.3
What is orbiting Earth that receive radio, television, and telephone signals and then transmit them around the world?
GPS
Communication Satellite
Transmitter
Cell Phone Tower
Q.4
What is faster the speed of light or the speed of sound?
The speed of light
The speed of sound
Q.5
What are points on a standing wave where the amplitude of the wave is zero?
Antinodes
Nodes
Refraction
Reflection
Q.6
What are crests and troughs of a standing wave?
Antinodes
Nodes
Wavelength
Resonance
Q.7
What types of waves do cell phones use?
Radio waves
Gamma Rays
Microwaves
Ultraviolet Rays
Q.8
How can cell phones make long distance calls?
Strong Wifi signal
Good reception
Satellite telephone systems
The government
Q.9
How do FM waves travel?
As changes in the frequency of the wave
As changes in the amplitude of the wave
As changes in the wavelength of the wave
As changes in the resonance of the wave
Q.10
What waves carry information to your TV and radio ?
Radio
Microwaves
Gamma
AM
Q.11
What relays signals it receives from Earth back to other receivers?
Tower
Cell Phone
Transmitter
Power Station
Q.12
What must radio waves move around? Select the best answer
The curvature of Earth
The population of people
The population of animals
Trees and other plants
Q.13
Which theory was confirmed by the discovery of Heinrich Hertz?
Galilean Relativity
Maxwell’s Electromagnetic Theory
Newtonian Mechanics
Special Relativity
Q.14
It is an intense burst of radio-frequency energy lasting for a fraction of a second.
Microwave
Radio pulse
Sound
Ultrasound
Q.15
In what part of the transmitter did Hertz see electrical sparks?
Battery
Conductor
Spark-gap
Switch
Q.16
Which of the following is the SI unit for frequency?
Hertz
Ampere
Minute
Kilometer
Q.17
Which of the following sparks can produce radio waves?
High voltage sparks
Low voltage sparks
Medium voltage sparks
Nominal voltage sparks
Q.18
Heinrich Hertz was a famous physicist widely known for his discovery of what?
Electromagnetic waves
Gravity
Magnetism
Photons
Q.19
Hertz (Hz) is an SI unit for which of the following measurement?
distance
frequency
mass
time
Q.20
True or False: PSAP’s who are close in geographical proximity are usually assigned different frequencies so they can avoid interference
True
False
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