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s2w1 All about light and spectra

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Last updated 5 months ago
27 questions
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Question 1
1.

Read section 3.1-3.2 in your book - Properties of light and the electromagnetic spectrum. Do you have any questions

Question 2
2.

In visible light, changing the wavelength will change the

Question 3
3.

What are some things people are talking about when the talk about non-visible electromagnetic waves?

Question 4
4.

Waves carry _________ from one place to another

Question 5
5.

Increasing the amplitude of the light changes the light from

Question 6
6.

Define white light

Question 7
7.

The amplitude of a wave tells you how

Question 8
8.

Which of the following is not a mechanical wave?

Question 9
9.

What does it mean that a gas stove produces mostly blue light

Question 10
10.

Read 3.3-3.5 in your book. Any questions?

Question 11
11.

When a blackbody is heated and the light it emits is split, you will see a

Question 12
12.

True or false: Electrons can absorb any amount of energy from visible light

Question 13
13.

true or false: The closer an electron is to the nucleus, the less energy that electron has

Question 14
14.

Suns create what kind of spectra

Question 15
15.

continuous spectra Light moving through a dark cloud of gas will create what kind of spectra

Question 16
16.

A hot cloud of gas that does not qualify as a blackbody will emit what kind of spectra?

Question 17
17.

If the explanations in the book seem a little too dense, these two videos may help. why aren't there green or purple stars
and How do we know what stars are made of

Question 18
18.

A mechanical wave requires a medium. For an ocean wave this medium would be

Question 19
19.

The medium for a sound wave would be

Question 20
20.

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?

Question 21
21.

c=2.99792458 x 10^8 m/s This is specifically

Question 22
22.

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?

Question 23
23.

Of the following, which carries the most energy?

Question 24
24.

you were given two equations ---> E = hc/ʎ and c= ʎv In both these equations ʎ stands for

Question 25
25.

because c is constant for the speed of light, wavelength and frequency are considered

Question 26
26.

Give a definition for the term blackbody

Question 27
27.
  • What is the difference between a mechanical wave and electromagnetic wave?
  • what moves when an electromagnetic wave passes?
  • What does the Amplitude of the EM wave mean for the light
  • What does the frequency of the EM wave mean for the light
  • What does it mean for something to absorb light
  • what does it mean for an atom to emit light?
  • what is the relationship between frequency, wavelength, and wave speed?
  • why are there lines on a spectrum from a sun?
  • what is a blackbody
  • What are radio waves, xrays, microwaves etc....
  • ive got this
  • I'm fuzzy
  • so confused