What is the primary difference between electromagnetic and mechanical waves?

Electromagnetic Waves and Light Properties

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Physics
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8th Grade
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Hard

Patricia Brown
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Electromagnetic waves require a medium to travel.
Mechanical waves can travel in a vacuum.
Electromagnetic waves can travel in a vacuum.
Mechanical waves are faster than electromagnetic waves.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is true about the speed of light?
It is the same as the speed of sound.
It requires a medium to travel.
It is approximately 300 million meters per second.
It is slower than sound.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What determines the color of light?
The wavelength of the light.
The medium through which it travels.
The temperature of the light source.
The intensity of the light.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which color of light has the shortest wavelength?
Red
Green
Blue
Violet
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the only type of electromagnetic wave visible to the human eye?
Infrared
Ultraviolet
Visible light
X-rays
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of electromagnetic wave is used in night-vision goggles?
Microwaves
Infrared radiation
Radio waves
Ultraviolet radiation
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a common use of microwaves besides cooking?
Bluetooth communication
Medical imaging
Sunburn treatment
X-ray imaging
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