Light Years, Red Shift and Blue Shift

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-PS4-1

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

• Increase
• Decrease
• Stay the same
• Make frog sounds

Tags

NGSS.HS-PS4-1

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

• Increase
• Decrease
• Stay the same
• Make squirrell sounds

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-1

Galaxies that are redshifted are:

• actually blue.
• really far away.
• invisible.
• moving away from us.

Tags

NGSS.HS-ESS1-2

The light of Proxima Centaury takes 4.3 years to reach Earth.  What does it mean?

• The star is 4.3  miles from Earth
• The star is 4.3 light years from the  Earth
• The star is 43.000.0000.000. light years fromm the  Earth
• The  star is  4.3 km  from the Earth

Tags

NGSS.MS-ESS1-3

The blue section of the wave is measuring _________________.

• wavelength
• crest
• trough
• amplitude 

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-ESS1-2

NGSS.HS-PS4-3

A light year is related to ...

• Time
• Energy
• Distance
• Mass