astronomy unit review 1. read the question 2. write your answer on the white board 3. write only the...
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Astronomy Unit Review
1. Read the question
2. Write your answer on the white board
3. Write ONLY the answer
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Question #1
What happens to the color of light as a star moves toward you?
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Answer:
It turns blue.
This is due to the Doppler Effect – as objects move toward you,the wavelength shortens and appears more blue.
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Question #2:
What happens to the color of light as a start moves away from you?
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Answer:
It turns red.This is again due to the
Doppler Effect – as objects move away from you,the wavelength lengthens and appears more red.
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Question #3:
What happens to the wavelength of light as a star moves toward you?
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Answer:
The wavelength gets shorter.
(and appears blue)
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Question #4:
What happens to the wavelength of light as a star moves away from you?
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Answer:
It gets longer.(and appears red)
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Question #5:
What theory says that wavelengths change as objects come toward or away from you?
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Answer:
The Doppler Effect
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Question #6:
What is the theory that says the universe started as one mass and then exploded?
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Answer:
The Big Bang Theory
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Question #13:
What is a body of gases that gives off a tremendous amount of radiant energy in the form of light and energy?
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Answer:
A Star
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Question #14:
Which telescope made it a lot easier to study stars from Earth?
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Answer:
The Hubble telescope
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Question #15:
The spectrum of light emitted from stars tells the …..
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Answer:
Elements present on that star
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Question #16:
We measure distances in space in … (what unit?)
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Answer:
Light years
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Question #17
The longest stage in a star’s life is …..
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Answer:
Main sequence
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Question #18:
What is the name of a cloud of gas and dust?
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Answer:
A nebula
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Question #19:
What is the process that stars use to generate energy?
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Answer:
Nuclear fusion
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Question #20:
Which element do hydrogen atoms turn into during fusion?
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Answer:
Helium
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Question #21:
What is the name for the large, cool star?
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Answer:
Red giant
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Question #22:
What is the name for a small, hot star?
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Answer:
White dwarf
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Question #23:
What is the name for an explosion in space?
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Answer:
Nova
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Question #24:
When stars contract with a great force and collapse in on themselves, what is created?
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Answer:
Black Hole
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Question #25
What are small star patterns called?
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Answer:
Constellations
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Question #26:
What is a large group of stars called?
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Answer:
A galaxy
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Question #27:
What is the name of our galaxy?
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Answer:
The Milky Way
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Question #28:
What is the shape of our galaxy?
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Answer:
Spiral
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Question #29:
What are the two main elements in the sun?
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Answer:
Hydrogen and Helium
(remember – the sun is just a star)
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Question #30:
What is the outermost layer of the sun?
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Answer:
Corona
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Question #31:
What is the layer of the sun that we see?
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Answer:
Photosphere
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Question #31:
What are the cool places on the sun?
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Answer:
Sunspots
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Question #32:
What are arches of glowing gas that arch above the sun?
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Answer:
Solar prominences
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Question #33:
What are the most violent solar prominences called?
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Answer:
Solar flares
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Question #34:
What are the auroras called?
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Answer:
Northern lights or Southern lights
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This concludes today’s review activity.
Have fun studying!!