WorksheetsRedshift
Total questions: 14
Worksheet time: 7mins
Name
Class
Date
1.
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.
2.
If a star is being observed from Earth and it's light has shifted towards the blue side of the electromagnetic spectrum it would be...
a)
Moving towards the Earth
b)
Moving away from the Earth
c)
This is a trick question that cannot be answered
d)
It isn't a star, it is a very large blueberry.
3.
If a star is being observed from Earth and it's light has shifted towards the red side of the electromagnetic spectrum it would be...
a)
Moving towards the Earth
b)
Moving away from the Earth
c)
This is a trick question that cannot be answered
d)
It isn't a star, it is a very large blueberry.
4.
The vast majority of galaxies in our universe are moving away from us. We know this because we observe __________ in the galaxies absorption spectra.
a)
Redshift
b)
Blueshift
c)
Turbulance
d)
Superposition
5.
Use the image to identify the motion of the object relative to Earth. Compare the absorption spectra of the star to what the star would look like if it were not moving at all relative to Earth.
a)
It is not moving
b)
It is moving away from Earth (Redshift)
c)
It is moving towards Earth (Blueshift)
d)
It is moving towards Earth (Redshift)
6.
Use the image to identify the motion of the object relative to Earth. Compare the absorption spectra of the star to what the star would look like if it were not moving at all relative to Earth.
a)
It is not moving relative to Earth
b)
It is moving away from Earth (Redshift)
c)
It is moving towards Earth (Blueshift)
d)
It is moving towards Earth (Redshift)
7.
An object that is moving VERY fast away from Earth would have ________ than an object that is moving very slow away from Earth.
a)
More Redshift
b)
More Blueshift
c)
Less Redshift
d)
Less Blueshift
8.
How long ago did the Big Bang occur?
a)
13.8 billion years ago
b)
4.6 billion years ago
c)
13.8 million years ago
d)
10 years ago
9.
RED shift is proof that the universe is
a)
expanding (getting bigger)
b)
contracting (getting smaller)
10.
RED shifted light has a
a)
shorter wavelength
b)
longer wavelength
11.
Galaxies that are redshifted are:
a)
actually blue.
b)
really far away.
c)
invisible.
d)
moving away from us.
12.
What conclusion can be made by comparing the two spectrums in the image?
a)
Galaxy is blueshifted; star is moving towards Earth.
b)
Galaxy is blueshifted; star is moving away from Earth.
c)
Galaxy is redshifted: star is moving away from Earth.
d)
Galaxy is redshifted; star is moving towards Earth.
13.
Which galaxy is closer to Earth?
a)
A is closer because it has a greater shift
b)
A is closer because it has a smaller shift
c)
B is not the closer galaxy, it is further
d)
I like minions
14.
Which galaxy is moving faster?
a)
Galaxy B is moving faster because it had a bigger shift
b)
Galaxy B is moving slower because it had a bigger shift
c)
Galaxy A is moving faster because it had a smaller shift.
d)
Bunnies are scary
100 %
