Earth Space Science Chapter 1 Vocabulary

Front

Revolution

Back

Moving around something without touching it

Front

Gravity

Back

A natural force that pulls a lighter object toward a heavier one

Front

Orbital Path

Back

The path that an object in space follows to travel around another object

Front

Satellite

Back

A natural or human-made object in space that moves around Earth or another planet

Front

Rotation

Back

The Earth spinning, even if you don’t feel it. Other objects in space can rotate, too.

Front

Axis

Back

The imaginary line through the center of Earth that joins the North and South Poles

Front

Planet

Back

An object in space that orbits the Sun and has enough gravity to make its shape round

Front

Time Zones

Back

The areas on Earth where the time of day is one or more hours different

Front

Equator

Back

An imaginary line splitting up the Earth into two equal halves, north and south

Front

Solar System

Back

The Sun and all the planets, and other objects that revolve around it.