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1.08 Unit 1 Test 25-26

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Last updated about 3 hours ago
21 questions
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Question 1
1.

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Question 2
2.
A student graphed each star's distance verses its red shift value for each star:
What pattern is appearing in the graph?

The greater the distance of the star from Earth, the __________ its redshift will be.
Required
4
Question 3
3.
The top spectra in the image is the reference.
The bottom spectra in the image is from a star.

This star's spectrum is __________ meaning that it is moving __________ Earth.
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Question 4
4.

Question 5
5.
According to the Big Bang Theory, the universe is __________
Question 6
6.

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3
Question 7
7.
During red shift, the wavelength of visible light from an object __________
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Question 8
8.

Question 9
9.
The majority of light astronomers observe from distant stars and galaxies is __________ which supports the idea that the universe is __________.
Question 10
10.

Question 11
11.

Question 12
12.

Question 13
13.

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Question 15
15.

Question 16
16.

Question 17
17.

Question 18
18.

Question 19
19.

Question 20
20.

Question 21
21.

What parts of this unit did you enjoy?

What parts of this unit could be improved?

Match the theory to its description.
Big Crunch
Universe's expansion accelerates so repeatedly that even atoms are torn apart
Big Rip
Universe will continue to expand forever, eventually becoming too cold to support life
Big Bounce
Universe will stop expanding and collapse back on itself due to gravity
Big Freeze
Combines elements of the Big Crunch and Big Bang, suggesting a cyclical universe
What is the most abundant element in the universe?
Hydrogen
Oxygen
Helium
Carbon
What is the cosmic microwave background (CMB) radiation?
Energy released by black holes
Leftover heat from the Big Bang
Radiation from nearby stars
Signals from alien civilizations
Images of outer space are created only using visible light.
True
False
What is dark matter?
A form of energy that causes the universe to expand
A type of visible matter that emits light
A black hole in space
An invisible form of matter that doesn't interact with light
What is the main difference between dark matter and dark energy?
Dark matter is visible, while dark energy is invisible
Dark matter is fast-moving, while dark energy is slow-moving
Dark matter is cold, while dark energy is hot
Dark matter attracts, while dark energy repels
How does dark energy affect the universe?
It slows down the expansion of the universe
It has no effect on the universe's expansion
It speeds up the expansion of the universe
What is the current state of our understanding of dark matter and dark energy?
We have no idea what it is
We know it exists but don't understand its nature
We fully understand its properties and origins
We have proven it doesn't actually exist
Question 14
14.

An astronomer records the spectra from three stars in three different galaxies. Which star is probably farthest away?
Star A
Star B
Star C
Why did you select the star in the previous question?
Its spectral lines had moved furthest to the right
Its spectral lines had moved furthest to the left
Its spectral lines had not moved
What is the universe?
All the matter, energy, and time that exists and has ever existed
Everything we can see with telescopes
The Milky Way galaxy and its surrounding space
Galaxies and stars
Who discovered that galaxies are moving away from us?
Carl Sagan
Edwin Hubble
Albert Einstein
Stephen Hawking
What is spectroscopy used for in astronomy?
To measure the temperature of stars
To determine the age of planets
To study distant objects by examining their light spectrum
To calculate the mass of galaxies
Now that we have completed Unit 1, please rate yourself on the Unit 1 objectives from 1 (just starting) to 5 (mastered it!)

You may need to scroll horizontally to see all options
1 - getting started
2
3
4
5 - mastered it
Describe the study of the cosmos
Discuss the theory of the origin of the universe
Analyze the evidence that supports the Big Bang theory
Examine the composition of matter and how it is distributed within the universe
Describe the theories of evolution and fate of the universe
Consider a jar of jelly beans that represents all the matter and energy in the universe.

What do the black jelly beans represent?
dark energy
dark matter
visible matter