5.1 Test: Redshift & Doppler Effect

What happens to the spectrum of a star that is moving away from Earth?

• unchanged

• loses its color

• shifts toward red

• shifts toward blue

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-3

What would you observe happening to the light waves coming from a star that is moving towards Earth?

• The waves spread out, and the frequency of each line increases.

• The waves compress, and the frequency of each line increases.

• The waves spread out, and the frequency of each line decreases.

• The waves compress, and the frequency of each line decreases.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

How will the spectra lines recorded on Earth be shifted for a star that is moving towards Earth?

• They will have redshift.

• They will have blueshift.

• They will have yellowshift.

• They will not be shifted at all.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

What has happened to light that has been blueshifted?

• A. Its amplitude has increased.

• B. Its amplitude has decreased.

• C. Its wavelength has decreased.

• D. Its wavelength has increased.

Tags

NGSS.HS-PS4-1

Which spectrum was produced by a star that is moving away from Earth?

• A

• B

• C

• D

Tags

NGSS.HS-PS4-3

Which spectrum was produced by a star that is not moving away or toward the Earth?

• A. A

• B. B

• C. C

• D. D

Which of the above (A – D) would be the observed location of the star when viewed in January?

• A. A

• B. B

• C. C

• D. D

Tags

NGSS.HS-ESS1-4

What role does distance play in determining parallax?

• Distance has no effect on parallax; only the observer's position matters.

• Parallax decreases as the distance to the object increases.

• Parallax increases as the distance to the object increases.

• Distance and parallax are unrelated factors.

Scientists match the spectral lines of a star to the known spectra of elements on Earth to determine which of the following?

• The composition and relative motion of stars

• The distance of stars from Earth

• The age of the universe

• The temperature of planets

Tags

NGSS.HS-ESS1-2