Shifting Stars

What is blue shifting?

• When the planets orbit the sun

• When the stars move

• When the stars are moving closer and you can see their light better

• When the sun moves away from earth

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

What allowed the formation of stars?

• The dense areas pulled in material because of gravity

• The Universe was filled with clouds of hydrogen and helium gas

• The gas eventually became hot and dense

• All of the above

What is Red-Shifting?

• Astronomers use this to describe how far away galaxies are relative to Earth

• Light waves are stretched into the lower frequencies

• Light waves are shifted into lower frequencies

• All of the above

Tags

NGSS.HS-PS4-3

To find brighter stars, what direction do you go on an HR diagram?

• up

• down

• left

• right

Tags

NGSS.HS-ESS1-3

What is red shifting?

• When the stars are moving away and their light shifts to longer wavelengths

• When the stars are moving closer and their light shifts to shorter wavelengths

• When the planets orbit the sun

• When the sun moves towards the earth

Tags

NGSS.HS-ESS1-2

Which phenomenon explains the change in frequency of light from a star due to its motion?

• Doppler Effect

• Photoelectric Effect

• Compton Scattering

• Quantum Tunneling

What can astronomers learn from observing the redshift of a star?

• The star's temperature

• The star's chemical composition

• The star's velocity relative to Earth

• The star's age

Which instrument is primarily used to measure the redshift of stars?

• Telescope

• Spectroscope

• Microscope

• Barometer

Tags

NGSS.HS-PS4-1

What does a blue shift in a star's light spectrum indicate?

• The star is stationary

• The star is moving away from Earth

• The star is moving towards Earth

• The star is expanding

How does the redshift of a galaxy relate to the expansion of the universe?

• It indicates the galaxy is shrinking

• It suggests the universe is contracting

• It supports the theory of an expanding universe

• It shows the galaxy is rotating

Tags

NGSS.HS-ESS1-2