Exit Check 8.7: The Big Bang

8.7.1

Which elements are most abundant in the visible universe?

• Helium and Carbon

• Carbon and Oxygen

• Hydrogen and Oxygen

• Hydrogen and Helium

Answer explanation

This question links to success criteria 8.7.1: I can analyze and interpret multiple sources of

evidence for the Big Bang Theory.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

8.7.1

Galaxies that are redshifted are:

• actually blue.

• really far away.

• invisible.

• moving away from us.

Answer explanation

This question links to success criteria 8.7.1: I can analyze and interpret multiple sources of

evidence for the Big Bang Theory.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

Tags

NGSS.HS-ESS1-2

8.7.1

The Cosmic Background Radiation is:

• the remaining energy from the big bang.

• incredibly hot.

• visible to the human eye.

• only located in certain places in the universe.

Answer explanation

This question links to success criteria 8.7.1: I can analyze and interpret multiple sources of

evidence for the Big Bang Theory.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

Tags

NGSS.HS-ESS1-2

8.7.2

The universe is ____________ years old.

• 8.13 billion

• 13.7 billion

• 1.83 billion

• 381 million

Answer explanation

This question links to success criteria 8.7.2: I can use the Big Bang Theory to explain the

origin of the universe.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

Tags

NGSS.HS-ESS1-2

8.7.2

Galaxy GS-9209 is estimated to have roughly 15% more hydrogen, nearly 10% less Helium, and less than 4% of the heavier materials when compared to our own. Which of the following pieces of reasoning explains how this is predicted by the big bang theory?

• GS-9209 is a red-shifted galaxy. This means it is moving away from us very fast and it dropped all of its heavier materials.

• GS-9209 is 12.5 billion light years away, so it is much older than our galaxy and has already used up its heavier fuel.

• GS-9209 is a smaller galaxy than ours, so it won't be as heavy as ours.

• GS-9209 is 12.5 billion light years away, so it is one of the youngest galaxies. Hydrogen should be more common the longer back in time you look.

Answer explanation

This question links to success criteria 8.7.2: I can use the Big Bang Theory to explain the

origin of the universe.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

Tags

NGSS.HS-ESS1-2

8.7.2

When we examine the red shift of distant galaxies, we find that the ones that are further away are more redshifted than the ones that are closer. What explains this?

• The further away galaxies are slowing down and loosing energy, that is why the light they produce is getting more red.

• The further away galaxies are moving away slower. We know this because red light is slower than blue light.

• The further away galaxies have more hydrogen which glows red. This proves that hydrogen is very common.

• The further away galaxies are moving away faster. This can be used to prove that the universe is expanding.

Answer explanation

This question links to success criteria 8.7.2: I can use the Big Bang Theory to explain the

origin of the universe.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

Tags

NGSS.HS-ESS1-2

8.7.2

Why is the Cosmic Background Radiation also known as the surface of last scattering?

• Photons moving in the early universe were scattered by electrons making the universe opaque and glowing. When it cooled enough to form hydrogen that last light traveled out as the CMB.

• The CMB is a giant cloud around the universe and is showing us the light from what is outside the visible universe.

• The CMB appears to come from all directions because it is always being reflected.

• Photons could always travel in a straight line until the universe cooled down. Now light from inside the visible universe bounces off the cloud of the CMB.

Answer explanation

This question links to success criteria 8.7.2: I can use the Big Bang Theory to explain the

origin of the universe.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

Tags

NGSS.HS-ESS1-2

8.7.1

Which of the following are primary sources of evidence in support of the Big Bang Theory?

• The idea that the universe is 13.7 billion years old.

• The existence of the cosmic microwave background.

• Hydrogen being the most common material in the universe

• The red shift of the light from distant galaxies

Answer explanation

This question links to success criteria 8.7.1: I can analyze and interpret multiple sources of

evidence for the Big Bang Theory.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

Tags

NGSS.HS-ESS1-2

Answer explanation

This question links to success criteria 8.7.1: I can analyze and interpret multiple sources of

evidence for the Big Bang Theory.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS4-3

8.7.2

The universe is expanding!  This means that:

• all of the galaxies are spreading out.

• the universe must have started from a single point.

• the universe is cooling down.

• all of the above.

Answer explanation

This question links to success criteria 8.7.2: I can use the Big Bang Theory to explain the

origin of the universe.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

Tags

NGSS.HS-ESS1-2