Red Shift Blue Shift

The vast majority of galaxies in our universe are moving away from us.  We know this because we observe __________ in the galaxies absorption spectra.

• Redshift

• Blueshift

• Turbulance

• Superposition

Tags

NGSS.HS-ESS1-2

What does the Red-shift tell us about the universe

• the universe is expanding

• the universe is contracting

• the big bang is false

• nothing

Tags

NGSS.HS-ESS1-2

When redshift occurs, the perceived WAVELENGTH of the wave would...

• Increase

• Decrease

• Stay the same

• Make squirrell sounds

Tags

NGSS.HS-PS4-1

How can a scientist tell how quickly and object in space is moving and whether or not its moving toward Earth?

• redshift and blueshift

• ultraviolet and infrared

• absorption and radiation

• absorption and emission

Tags

NGSS.HS-ESS1-4

Click on the spectrum that shows BLUESHIFT

THE SPECTRUM IN THE MIDDLE IS THE STANDARD SPECTRUM.

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-1

When a star has been red shifted, what does that mean about the star?

• It is moving toward us.

• It is moving away from us.

• It is brighter than the other stars

• It is hotter than the other stars.

A, B, C, and D represent galaxies. Which are in red shift?

• A and C

• A only

• B and D

• We don't have enough information

Tags

NGSS.HS-PS4-3

If a star is being observed from Earth and it's light has shifted towards the blue side of the electromagnetic spectrum it would be...

• Moving towards the Earth

• Moving away from the Earth

• This is a trick question that cannot be answered

• It isn't a star, it is a very large blueberry.

Tags

NGSS.HS-PS4-3

When blueshift occurs, the perceived WAVELENGTH of the wave would...

• Increase

• Decrease

• Stay the same

• Make frog sounds

Tags

NGSS.HS-PS4-1

Galaxies that are redshifted are:

• actually blue.

• really far away.

• invisible.

• moving away from us.

Tags

NGSS.HS-ESS1-2