Space Vocab - Energy, Forces and Motion

Front

Initial explosion that formed and expanded the universe

Back

Big Bang

Front

Region of space influenced by solar wind

Back

heliosphere

Front

A mixture of gases surrounding a planet or moon

Back

atmosphere

Front

186,000 miles/second

Back

speed of light

Front

Distance light travels in a year (9.5 trillion km)

Back

light year

Front

Movement of an object around another

Back

revolution

Front

Earth's spinning on its axis

Back

rotation

Front

Energy radiated or transmitted as rays, waves, or particles

Back

radiation

Front

Path of an object revolving around another in space

Back

orbit

Front

Force of attraction between masses

Back

gravity