Big Bang Quiz on the Big Bang

What happened just before the formation of the first hydrogen and helium atoms in the universe?

• A protogalaxy formed at the center of the universe.

• Dust and gas began rotating around dense centers, forming the first galaxies.

• The first stars, red supergiants, formed and began fusing lighter elements into heavier elements.

• The material formed by the Big Bang explosion cooled slightly, allowing for the formation of subatomic particles.

What led to the formation of hydrogen and helium after the Big Bang?

• Subatomic particles like protons, neutrons, and electrons formed.

• A protoplanetary disk formed.

• Atoms broke apart releasing energy.

• Water and ice formed as the Universe cooled.

When scientists look into space they find that hydrogen makes up about 74 percent of the mass of the universe and helium about 25 percent of the mass of the universe.

What does this evidence most clearly suggest about the universe?

• that the universe is expanding

• that it formed as a result of the Big Bang

• that the universe is still in its infancy

• that gravity may not work the way we think

What best describes the formation of the light elements (for example: Hydrogen and Helium) in the universe?

• They were created out of dark matter as it exploded during the Big Bang.

• They were created out of radiation as the early universe cooled and expanded.

• They were created out of hydrogen as the first stars fused these nuclei into lighter nuclei.

• They were created out of heavier elements as the universe began to spin around a common center.

What best describes the sun's size compared to other stars?

• extremely small

• slightly smaller than average

• sightly larger than average

• extremely large

According to the Big Bang theory, when did the universe form?

• 13 million years ago

• 137 million years ago

• 4.6 billion years ago

• 13.7 billion years ago

Which star is most likely our sun?

• 1

• 2

• 3

• 4

Which of the following is supporting evidence for the Big Bang theory?

• stars' apparent magnitudes

• cosmic background radiation

• interplanetary dust

• supernova remnants

Which of the following does the Big Bang theory best help explain?

• formation of meteor showers

• inclination of planets

• Earth's distance from the sun

• origin of the universe

According to the Big Bang theory, what event led to the formation of the universe?

• A star collapsed and became a black hole.

• A dense region expanded rapidly.

• The temperature of the sun increased.

• A cluster of stars formed in a nebula.