Structure of the Universe Unit Test Review

Front

What is the Big Bang Theory?

Back

The Big Bang Theory is the leading explanation for the origin of the universe, suggesting it began as a singularity and expanded rapidly, leading to the formation of galaxies, stars, and planets.

Front

What evidence supports the Big Bang Theory?

Back

The red-shift of light emitted by stars indicates that the universe is expanding, which supports the Big Bang Theory.

Front

What is a star primarily made of?

Back

A star is primarily made of plasma, which is a state of matter consisting of charged particles.

Front

Do stars have solid surfaces?

Back

No, stars do not have solid surfaces; they are composed of hot gases and plasma.

Front

What process do stars use to produce light?

Back

Stars produce light through the process of nuclear fusion, where hydrogen atoms combine to form helium, releasing energy.

Front

What happens to a star when it dies?

Back

When a star dies, it can explode in a supernova, creating new and heavier elements.

Front

What is the relationship between a planet's size and its gravity?

Back

Larger planets tend to have stronger gravity due to their greater mass.

Front

What is the Kuiper Belt?

Back

The Kuiper Belt is a region of the Solar System beyond Neptune, where the majority of asteroids are found.

Front

Where are most asteroids located in the Solar System?

Back

Most asteroids are found in the Kuiper Belt at the outside edge of the Solar System.

Front

What is the primary component of stars that allows them to shine?

Back

The primary component that allows stars to shine is hydrogen, which they fuse into helium.