11-18: Solar System Flashcard

Front

What is the sun?

Back

The star around which all the planets and their bodies orbit.

Front

What is an orbit?

Back

The path that one object in space follows as it revolves around another object in space.

Front

List the planets in order from the sun.

Back

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.

Front

What is the Oort cloud?

Back

The farthest portion of our solar system from the Sun; creates a three-dimensional sphere around the solar system made of large chunks of ice.

Front

What is revolution in space?

Back

The motion of one object around another object.

Front

What is a planet?

Back

A celestial body that orbits a star and is large enough to be rounded by its own gravity.

Front

What is a natural satellite?

Back

A celestial body that orbits a planet, like the Moon orbits Earth.

Front

What is gravity?

Back

The force that attracts two bodies towards each other, keeping planets in orbit around the sun.

Front

What is the difference between rotation and revolution?

Back

Rotation is the spinning of an object around its own axis, while revolution is the movement of one object around another.

Front

What is a galaxy?

Back

A massive system of stars, star clusters, dust, and gas bound together by gravity.