8th grade Review

Front

What is the Big Bang Theory?

Back

A theory that explains the origin of the universe, stating it began as a small point that expanded rapidly about 13.7 billion years ago.

Front

What force is responsible for holding stars, gas, and dust together in a galaxy?

Back

Gravity.

Front

What color are the coolest stars?

Back

Red.

Front

Which season occurs in the Northern Hemisphere during Position 3?

Back

Summer.

Front

In which galaxy is Earth located?

Back

Milky Way.

Front

What is a galaxy?

Back

A large collection of stars, gas, and dust held together by gravity.

Front

What is the role of gravity in the universe?

Back

Gravity is the force that attracts objects with mass towards each other, holding galaxies, stars, and planets together.

Front

What is the difference between a planet and a star?

Back

A planet is a celestial body that orbits a star, while a star is a massive, luminous sphere of plasma held together by gravity.

Front

What is the significance of the Milky Way galaxy?

Back

The Milky Way is the galaxy that contains our solar system and is one of billions of galaxies in the universe.

Front

What are the main components of a galaxy?

Back

Stars, gas, dust, and dark matter.