Earth & Space Systems Vocab.

Front

Galaxy

Back

A collection of stars and their solar systems in the Universe.

Front

Gravity

Back

The force that pulls objects toward each other.

Front

Model

Back

Something that is made to represent an object or idea.

Front

Planet

Back

A large object that orbits the sun.

Front

Revolution

Back

The movement of a smaller object around a large object.

Front

Scale Model

Back

A physical model of an object or system that is much larger or smaller than the thing it is modeling.

Front

Solar System

Back

A group of planets and other objects that move around a central star.

Front

Star

Back

A ball of hot gases that gives off light and other types of energy.

Front

Sun

Back

The star that is in the center of our solar system and that is closest to Earth.

Front

System

Back

A group of parts that make up something bigger that can do things the individual parts cannot.