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Module 24 - Electromagnetic Technologies
Test Description: Electromagnetic technologies
Instructions: Answer all questions to get your test result.
1) Which of the following radio wave frequencies would be best to transmit and receive wireless information?
A
30 GHz
B
3 KHz
C
300 KHz
D
300 MHz
2) Which of the following is true about radio waves?
A
Radio waves have the lowest frequency, largest wavelengths, and lowest energy.
B
Radio waves have the highest frequency, smallest wavelengths, and highest energy.
C
Radio waves have the lowest frequency, largest wavelengths, and highest energy.
D
Radio waves have the highest frequency, largest wavelengths, and highest energy.
3) Which of the following do cellphones, televisions, and wireless computer networks (wifi) all have in common?
A
They are all beneficial to humans by receiving and transmitting signals through ultra-violet waves
B
They are all beneficial to humans by receiving and transmitting signals through longitudinal waves
C
They are all beneficial to humans by receiving and transmitting signals through radio waves
D
They are all beneficial to humans by receiving and transmitting signals through compressional waves.
4) Which of the following is an electromagnetic energy used to transmit and detect waves that is designed to benefit humans?
A
Infrared radiation
B
All of the answer choices
C
Microwaves
D
Radio waves
5) Which of the following is a technology that uses electromagnetic energy to meet human needs?
A
Bluetooth
B
All of the answer choices
C
WIFI
D
Cell phones
6) Which of the following is NOT a use of infrared radiation?
A
Remote controls
B
Night vision and security cameras
C
Police scanners
D
Cell phones
7) Fiber optic cables transmit a tremendous amount of information which of the following types of electromagnetic waves?
A
x-rays
B
radio waves
C
infrared radiation
D
visible light
8) Which of the following electromagnetic waves can be extremely dangerous?
A
ultraviolet rays
B
x-rays
C
gamma
D
All of the answer choices
9) Which of the following electromagnetic waves can transmit the most information?
A
visible light
B
infrared radiation
C
microwaves
D
radio waves
10) Which of the following can be recorded, stored for future recovery, and transmitted over long distances without substantial loss?
A
x-rays
B
gamma rays
C
all of the answer choices
D
digital information
*select an answer for all questions
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