Red-Shift and the expanding Universe

About how long ago do scientists believe the universe began?

• 13-15 billion years ago

• 13-14 million years ago

• 2-3 billion years ago

• 21-22 million years ago

If a star is being observed from Earth and it's light has shifted towards the red 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-ESS1-2

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

The majority of matter in the universe is made of which two elements that formed after the Big Bang?

• Oxygen and Helium

• Nitrogen and Carbon

• Hydrogen and Helium

• Lithium and Oxygen

Tags

NGSS.HS-ESS1-2

Cosmic microwave background radiation is

• The left over energy from the initial expansion of the universe.

• used for communication.

• created by satellites.

• a myth.

If an object is moving toward us, its spectrum will experience

• no shift
• red shift
• black spectrum
• blue shift

Tags

NGSS.HS-ESS1-2

Which stars have the greatest red shift?

• Stars closest to Earth where we can see them better.

• Stars nearest Earth with least speed

• Stars farthest from Earth with the greatest speed.

• Stars in the nearest galaxy that are spinning.

Which of these is evidence for the Big Bang Theory?

• blue shift

• cosmic microwave background radiation

• black holes

• x-rays

Dark matter is considered to be responsible for ...

• ...the Big Bang

• ...the expanding universe

• ...the formation & structure of galaxies

• ...dark energy

Which is one piece of information that astronomers use to calculate the age of the universe?

• dark energy

• the age of rocks on Earth

• the current motion of inner planets

• patterns of background radiation