UF s1w8 Astronomy FC If you want to know about light, you have to know about waves
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Last updated 8 months ago
14 questions
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Question 1
1.
watch the following video on the properties of waves
Do you have any questions?
Question 2
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Question 3
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Question 4
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Question 5
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Question 6
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Question 7
7.
Read section 3.1-3.2 in your book - Properties of light and the electromagnetic spectrum. Do you have any questions
Question 8
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Question 9
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Question 10
10.
Define white light
Question 11
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Question 12
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Question 13
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Question 14
14.
Give a definition for the term blackbody
The amplitude of a wave tells you how
fast the wave is traveling
the space between wave crests
how many waves per second pass by
much energy is traveling through the wave
A mechanical wave requires a medium. For an ocean wave this medium would be
the crests of the waves
the water
the ocean floor
the wind
The medium for a sound wave would be
wind
energy
air
pressure
All mechanical waves have amplitude, wavelength, period, and wave speed. Look in the area between the arrow to the word elevation and the aline showing amplitude. How many cycles of the wave is show here?
1
1.25
1.5
2
2.5
Frequency is the number of full cycles (crest to crest) a wave passes in a second. The unit, a hz, can be converted to what SI unit?
1/second
cycle/second
meter/second
cycle*second
c=2.99792458 x 10^8 m/s This is specifically
the average speed of light through a vacuum
the average speed of light through air
the average speed of light through water
the instantaneous speed of light no matter what the medium
The amplitude of a light wave tells you
the color of the light
the speed of the light
the intensity of the light
whether the light is visible or not
Of the following, which carries the most energy?
Visible light
radio waves
x rays
microwaves
you were given two equations ---> E = hc/ʎ and c= ʎv
In both these equations ʎ stands for
wavelength
frequency
speed
energy
Planck's constant
because c is constant for the speed of light, wavelength and frequency are considered