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EM Spectrum
Test Description: Review for MS Obj 8.2e
Instructions: Answer all questions to get your test result.
1) The portion of the electromagnetic spectrum most useful to living things is...
A
Blacklight
B
Infrared radiation
C
Visible light
D
Ultraviolet radiation
2) The frequencies of the electromagnetic spectrum with the highest energy are of...
A
X-rays
B
Infrared light
C
Gamma rays
D
Microwaves
3) Visible light has a higher frequency than...
A
Infrared rays
B
Gamma rays
C
Ultraviolet rays
D
X-rays
4) X-ray devices use electromagnetic waves to create images that let doctors see inside the human body. Which best describes how x-rays are able to help create these images?
A
X-rays cause bones of the human body to give all of visible light
B
X-rays, soft tissue of the human body to become transparent
C
X-rays change speed when they move from one material to the another
D
X-rays pass through soft tissue and are absorbed by hard tissue
5) Which type of wave has the shortest wavelength?
A
Microwave
B
X-ray
C
Gamma
D
All have the same wavelength
6) Which of the following shows electromagnetic waves in order from highest to lowest energy level?
A
X-rays, radio waves, ultraviolet light
B
Radio waves, gamma rays, microwaves
C
Ultraviolet light, gamma rays, infrared light
D
X-rays, ultraviolet light, radio waves
7) What two properties of an EM wave change as you move from one part of the EM spectrum to another?
A
Wavelength and frequency
B
Mechanical waves and compression waves
C
Speed and energy
D
Distance and energy
8) Why does grass appear green?
A
It reflects all wavelengths of light and green is the brightest.
B
It reflects green light and absorbs all other wavelengths.
C
It absorbs green light and reflects all other wavelengths.
D
It absorbs all wavelengths of light and then admits only green.
9) Which of these statements about frequency is true?
A
There is no relationship between wavelength and frequency.
B
Waves with long wavelengths have low frequencies.
C
Visible light has higher frequency than any other EM waves.
D
Waves with long wavelengths have high frequencies.
10) In order for the human body to make vitamin D, some exposure to what kind of lightwave is necessary?
A
Ultraviolet waves
B
Infrared waves
C
X-rays
D
Microwaves
*select an answer for all questions
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