UNIT 1: EpitU Vocab

Front

What is a large, round object in space that travels around a star?

Back

Planet

Front

What is a group of planets or celestial bodies that revolve around a star(s)?

Back

Solar System

Front

What is the process of turning around a central point (axis)?

Back

Rotation

Front

What is a ball-shaped gaseous celestial body (as the sun) of great mass that shines by its own light?

Back

Star

Front

What is the distance light travels in one year (9.5 trillion kilometers, or 5.9 trillion miles)?

Back

Light year

Front

What is the term for the gravitational pull that a celestial body exerts on objects near it?

Back

Gravity

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 galaxy that contains our solar system?

Back

Milky Way Galaxy

Front

What is the term for the movement of one celestial body around another?

Back

Revolution

Front

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

Back

Gravitational Force