Big Bang Theory Basics Review

The only elements in the universe were hydrogen and helium until:

• the big bang.
• humans came along.
• stars began doing fusion.
• the redshift was discovered.

The universe is ____________ years old.

• 8.13 million

• 13.8 billion

• 1.83 trillion

• 381 thousand

The most abundant element in the universe today is:

• water
• hydrogen
• oxygen
• carbon

This image describes:

• The redshift.

• The CMB.

• The distribution of each element in the universe.

• The amount of time the universe has existed.

The universe is expanding.  This means that:

• Galaxies are getting bigger.
• Atoms are getting bigger.
• The universe is creating more matter.
• The amount of space between galaxies is increasing.

According to the Big Bang Theory, which graph best represents the relationship between time and the size of the universe from the beginning of the universe to the present?

• Size decreasing as time increases
• Size and time both increasing
• Size does not change as time increases
• Size increases, then decreases as time increases

Which of the following is evidence of the Big Bang Theory?

• Cavemen heard a loud bang at the beginning of time.
• The universe isn't moving
• The universe is expanding
• The universe is getting smaller

Which of the following is NOT true about the Big Bang Theory?

• It is the scientific explanation of how life began on Earth and evolved over time.
• It is the scientific explanation for the origin of the universe.
• It states that the universe expanded from a single point and is still expanding today.
• It states that the universe used to be much hotter and smaller.

What can we conclude from the observation that nearly all galaxies are moving away from us?

• Massive black holes are drawing galaxies away from Earth.
• The Sun and Earth are located at the center of the universe.
• Everything in the universe is moving the same direction.
• The once-smaller universe is expanding in all directions.

As part of the modern theory of the origins of the elements, it is hypothesized that before the formation of the stars, most of the matter in the universe consisted of what atoms?

• hydrogen and helium
• nitrogen and carbon
• silicon and lithium
• uranium and radium