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