Unit 3, Ch. 8 Astronomy

Front

What is the Big Bang Theory?

Back

The Big Bang Theory states that all of what would become the universe was concentrated in a single small point, or singularity, which rapidly expanded into what is now stars, planets, galaxies, matter, and energy.

Front

What is plotted on the x-axis of an H-R Diagram?

Back

Temperature is plotted on the x-axis of an H-R Diagram.

Front

What is plotted on the y-axis of an H-R Diagram?

Back

Brightness is plotted on the y-axis of an H-R Diagram.

Front

What does the color of a star indicate?

Back

The color of a star indicates its temperature.

Front

What are asteroids?

Back

Asteroids are large metallic, rocky, and dusty objects that are clustered in bands called belts.

Front

Which star is known to be cool, dim, and red?

Back

Bernard's star is known to be cool, dim, and red.

Front

What is a singularity in the context of the Big Bang?

Back

A singularity is a point where all matter was concentrated before the Big Bang.

Front

What is the significance of the H-R Diagram in astronomy?

Back

The H-R Diagram is used to classify stars based on their brightness and temperature.

Front

What are the main components of the universe formed after the Big Bang?

Back

The main components formed are stars, planets, galaxies, matter, and energy.

Front

What is the difference between a planet and an asteroid?

Back

A planet is a large celestial body that orbits a star, while an asteroid is a smaller rocky body that orbits the sun, often found in belts.