Semester Review: Astronomy

Front

What is the theory that states the sun is at the center of the solar system?

Back

Heliocentric Theory

Front

What does the rotation of the Earth cause?

Back

Day and night

Front

Why is it difficult to create a model of the solar system?

Back

The solar system is so big and the objects in it are so small in comparison.

Front

What added new materials to the planets when the solar system was young?

Back

Impacts of smaller objects.

Front

What change should be made to a model to show a greater gravitational pull from the sun?

Back

Replace the 1 kg mass with a 2 kg mass.

Front

What is the term for the path an object takes as it revolves around another object in space?

Back

Orbit

Front

What is the name of the force that keeps planets in orbit around the sun?

Back

Gravity

Front

What are the two main types of celestial bodies in our solar system?

Back

Planets and stars.

Front

What is the term for the time it takes for the Earth to complete one full rotation on its axis?

Back

A day.

Front

What is the term for the time it takes for the Earth to complete one full orbit around the sun?

Back

A year.