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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
300 KHz
B
300 MHz
C
3 KHz
D
30 GHz
2) Which of the following is true about radio waves?
A
Radio waves have the lowest frequency, largest wavelengths, and highest energy.
B
Radio waves have the highest frequency, largest wavelengths, and highest energy.
C
Radio waves have the highest frequency, smallest wavelengths, and highest energy.
D
Radio waves have the lowest frequency, largest wavelengths, and lowest 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 radio waves
B
They are all beneficial to humans by receiving and transmitting signals through compressional waves.
C
They are all beneficial to humans by receiving and transmitting signals through longitudinal waves
D
They are all beneficial to humans by receiving and transmitting signals through ultra-violet waves
4) Which of the following is an electromagnetic energy used to transmit and detect waves that is designed to benefit humans?
A
All of the answer choices
B
Microwaves
C
Infrared radiation
D
Radio waves
5) Which of the following is a technology that uses electromagnetic energy to meet human needs?
A
Cell phones
B
Bluetooth
C
WIFI
D
All of the answer choices
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
x-rays
B
All of the answer choices
C
gamma
D
ultraviolet rays
9) Which of the following electromagnetic waves can transmit the most information?
A
microwaves
B
visible light
C
infrared radiation
D
radio waves
10) Which of the following can be recorded, stored for future recovery, and transmitted over long distances without substantial loss?
A
gamma rays
B
all of the answer choices
C
x-rays
D
digital information
*select an answer for all questions
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