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Radiation and Spectra Review

Total questions: 30

Worksheet time: 16mins

Name
Class
Date
1.

The color of emitted light with the LONGEST wavelength is

a)

violet

b)

green

c)

red

d)

indigo

2.

The color of emitted light with the SHORTEST wavelength is

a)

violet

b)

green

c)

red

d)

indigo

3.

A wave with a long wavelength will have a ______ frequency and _____ energy

a)

high, low

b)

high, high

c)

low, high

d)

low, low

4.

When analyzing star light or elements in a lab, what are the different color patterns produced by the prism called?

a)

emission spectra

b)

the rainbow

c)

absorption spectra

d)

spectral rainbow

5.

Scientists learn what stars are made of by analyzing their.....

a)

The Doppler Effect

b)

Emission Spectra

c)

Radio Waves

d)

The Electromagnetic Spectrum

6.

If astronomers examine the spectral lines of a distant galaxy and saw that they displayed a blue shift, what would this mean about the motion of the galaxy?

a)

The galaxy is not moving.

b)

The galaxy is moving toward Earth.

c)

The galaxy is moving away from Earth.

d)

The galaxy is shifting back and forth at 650 Thz, the frequency of blue light.

7.

Astronomers examine the spectra from a distant galaxy and find that the spectra exhibit a red Doppler shift. What does this mean about the galaxy?

a)

The galaxy is not moving.

b)

The galaxy is moving away from Earth.

c)

The galaxy contains mostly red giant stars.

d)

The galaxy is a spiral galaxy.

8.
All electromagnetic waves travel at 
a)
Speed of Sound
b)
the Speed of Light
c)
the speed of gravity
d)
no idea
9.

What property of this wave is represented by the letter "A"

a)

amplitude

b)

crest

c)

trough

d)

wavelength

10.
The number of wavelengths that pass a point each second is:
a)
frequency
b)
period
c)
longitudinal 
d)
transverse wave 
11.

Which section of the electromagnetic spectrum is the ONLY one we can see?

a)

X-rays

b)

Visible Light

c)

Gamma Rays

d)

Ultraviolet Rays

12.
All electromagnetic waves have the same...
a)
frequency
b)
speed
c)
wavelength
d)
energy
13.
Select the correct order of waves on the EMS 
a)
Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma
b)
Gamma, X-ray, Ultra, Vis, Infra, Micro, Radio
c)
Vis, Micro, Infra, Ultra, X-ray, Gamma, Radio
d)
Micro, Radio, Vis, Infra, Ultra, X-ray, Gamma
14.
This picture is an example of a(n)...
a)
absorption spectrum
b)
emission spectrum
c)
continuous spectrum
d)
black body spectrum
15.
The Sun emits a continuous spectra.
a)
True
b)
False
16.
What best describes the doppler effect?
a)
An apparent change in frequency of a wave due to the relative motion between a wave source and an observer
b)
When sound changes pitch
c)
When light changes color
d)
An apparent change in the amplitude of a wave due to the relative motion between a wave source and an observer.
17.
What kind of waves do stars emit?
a)
x-ray and ultraviolet
b)
visibile
c)
radio and infrared
d)
all of the above
18.

Elements emit radiation that show up as ___________ on their spectra.

a)

Continuums

b)

Bands

c)

Absorption Spectra

d)

Emission Spectra

19.

Emission spectra result from ________________ gas.

a)

hot, low-density

b)

hot, high-density

c)

cool, low-density

d)

cool, high-density

20.

Absorption spectra result from ________________ gas.

a)

hot, high-density

b)

hot, low-density

c)

cool, high-density

d)

cool, low-density

21.

We primarily use __________ to find information about the temperature of high-density material.

a)

absorption spectra

b)

blackbody curves

c)

emission spectra

d)

laser oscillators

22.

We primarily use emission/absorption spectra to identify ____________ of stars.

a)

composition

b)

temperature

c)

luminosity

d)

frankfurter

23.

Which parts of the EM spectrum make it through our atmosphere?

a)

radio

b)

visible

c)

gamma

d)

x-ray

24.

Which part of the EM spectrum has the lowest energy?

a)

infrared

b)

radio

c)

x-ray

d)

UV

25.

__________________ material provides us with a blackbody spectrum.

a)

low-density

b)

high-density

26.

What changes about a blackbody curve as the temperature changes?

a)

color

b)

position

c)

shape

d)

owls

27.

A continuous spectrum/blackbody curve provides us with what information?

a)

temperature

b)

velocity

c)

composition

d)

doppler effect

28.

What determines a high-density material's spectral properties?

a)

temperature

b)

phase

29.

The _________ provides us with an absorption spectrum.

a)

planets

b)

moons

c)

stars

d)

creatures from the blue lagoon

30.

This astronomer survived an explosion and is credited with discovering the absorption lines in the sun's spectrum.

a)

Wein

b)

Stefan

c)

Fraunhofer

d)

Newton