Astronomy 6.IA Review

Why is the light from distant galaxies red-shifted?

• They produce more red light than nearby galaxies
• They are moving away from us
• The longer wavelengths are filtered out more by dust
• They are moving toward us

Tags

NGSS.HS-ESS1-2

About how long ago do scientists believe the universe began?

• 13-14 billion years ago
• 13-14 million years ago
• 12-13 billion years ago
• 12-13 million years ago

Tags

NGSS.HS-ESS1-2

What does the Big Bang theory suggest?

• The universe was just there
• The Milky Way is the only solar system
• The universe is continually expanding
• The universe started as a point and is moving towards each other

Tags

NGSS.HS-ESS1-2

What is the origin of the universe called?

• The Hubble Glitch
• The Big Crunch
• The Big Bang
• The Big Collapse

What law purposed that all the galaxies are accelerating away from each other.

• Pascal's law
• Hubble's law
• Newton's law
• Arcamedie's law

Hubble's Law implies that...

• Redshifts will shorten over time

• The universe is infinitely old and large

• The universe has a beginning and end and a finite age

• The Milky Way is in the middle of expansion

The Big Bang is...

• an enormous explosion

• The event that caused the universe to begin expanding

• The creation of the universe's matter

• None of the above

Why do astronomers think the universe is expanding?

• something is moving away from us

• something is moving toward us

• Galaxies farther away are moving away faster

• The sun is moving away from us

When will the universe stop expanding

• Closed Universe

• Steady State Universe

• Critical Density Universe

• None of the above

When the critical density is greater than one, then:

• The universe is closed

• the universe will expand

• no matter could have ever existed

• there is only dark matter