Astronomy Unit Review 1. Read the question 2. Write your answer on the white board 3. Write ONLY the answer.

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Presentation transcript:

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!!