U10.3 – The Doppler Effect

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The Doppler Effect

1 / 10

When a light source moves away from an observer, the wavelength becomes ____________.

2 / 10

Which stationary observer will hear a higher pitched sound?

3 / 10

When a light source moves away from an observer, the light undergoes __________.

4 / 10

Select the best definition for the Big Bang Theory.

 

5 / 10

Andromeda has a redshift of -0.001001, what is it's movement in relation to Earth?

6 / 10

A galaxy has redshift of 0.19. Estimate the speed it is moving relative to Earth. H0 = 75 kms-1MPc-1. 1 year ≈ 3.16x107s, 1 pc ≈ 3.09x1016 m, c = 3x108 ms-1

7 / 10

A galaxy has redshift of -0.32. Estimate the speed it is moving relative to Earth. H0 = 75 kms-1MPc-1. 1 year ≈ 3.16x107s, 1 pc ≈ 3.09x1016 m, c = 3x108 ms-1

8 / 10

On this graph, which line represents the density of the universe is less than the critical density?

9 / 10

A galaxy has redshift of 0.48. Estimate the distance it is from Earth in light years. H0 = 75 kms-1MPc-1. 1 year ≈ 3.16x107s, 1 pc ≈ 3.09x1016 m, c = 3x108 ms-1

10 / 10

Estimate the diameter of the observable universe. H0 = 75 kms-1MPc-1. 1 year ≈ 3.16x107s, 1 pc ≈ 3.09x1016 m, c = 3x108 ms-1

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