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1. An increase or decrease in the wavelength and frequency of sound waves and light waves as the source and the observer move toward or away from each other is the _____ effect. (2 points) Responses Dockworker Dockworker Dingleberry Dingleberry Doppelganger Doppelganger Doppler Doppler Question 2 2. When a star comes closer to Earth, the wavelength of its light ___. (2 points) Responses remains the same. remains the same. decreases (gets shorter). decreases (gets shorter). increases (gets longer). increases (gets longer). Question 3 3. When a star moves away from Earth, the wavelength of its light ___. (2 points) Responses decreases (gets shorter). decreases (gets shorter). increases (gets longer). increases (gets longer). remains the same. remains the same. Question 4 4. When a star or galaxy moves away from Earth, it shows a ___ shift. (2 points) Responses blue blue red red Question 5 5. When a star or galaxy moves toward Earth, it shows a ___ shift. (2 points) Responses red red blue blue USE THE DIAGRAM BELOW TO ANSWER QUESTIONS #6-8. Question 6 6. Choose the correct color shift and direction for STAR #2.(2 points) Responses red; toward red; toward blue; toward blue; toward red; away red; away blue; away blue; away Question 7 7. Choose the correct color shift and direction for STAR #3.(2 points) Responses blue; away blue; away red; away red; away blue; toward blue; toward red; toward red; toward Question 8 8. Choose the correct color shift and direction for STAR #6.(2 points) Responses blue; toward blue; toward red; toward red; toward red; away red; away blue; away blue; away Skip to navigation

1 answer

Sure! Here are the answers to your questions based on the information provided:

  1. An increase or decrease in the wavelength and frequency of sound waves and light waves as the source and the observer move toward or away from each other is the Doppler effect.

  2. When a star comes closer to Earth, the wavelength of its light decreases (gets shorter).

  3. When a star moves away from Earth, the wavelength of its light increases (gets longer).

  4. When a star or galaxy moves away from Earth, it shows a red shift.

  5. When a star or galaxy moves toward Earth, it shows a blue shift.

For questions 6-8, I would need the diagram mentioned to provide accurate answers regarding the color shifts and directions for the specific stars stated. If you could share the relevant details or descriptions for STAR #2, STAR #3, and STAR #6, I’ll be happy to help with those as well!