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Chapter 11 EM Waves
Test Description: Electromagnetic waves
Instructions: Answer all questions to get your test result.
1) Electromagnetic waves that can be used to view images of bones and teeth are called
A
visible light
B
UV rays
C
x rays
D
radio waves
2) An object that allows some light to pass through is said to be
A
opaque
B
translucent
C
clear
D
transparent
3) Waves with the longest wavelength and lowest frequency are called
A
radio waves
B
microwaves
C
infrared rays
D
gamma rays
4) As wavelength decreases across the electromagnetic spectrum, frequency ____.
A
decreases
B
increases
C
stays the same
D
does nothing
5) What occurs when parallel rays of light hit a rough or bumpy surface?
A
refraction
B
regular refrection
C
diffuse reflection
D
diffraction
6) The part of the EM spectrum that you can see is called
A
radio waves
B
microwaves
C
UV rays
D
visible light
7) EM waves can transfer waves with or without a
A
generator
B
spectrum
C
medium
D
destination
8) When light passes from air to water, it __________.
A
stays the same
B
gets brighter
C
slows down
D
speeds up
9) When parallel beams of light strike a concave mirror, the beams are ________.
A
refract outwards
B
reflected back at a narrower angle
C
reflected back at a broader angle
D
refract inwards
10) A flat sheet of glass with a silver-colored coating on one side is called a
A
mirror
B
desk
C
lens
D
EM spectrum
*select an answer for all questions
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