Unit 6 Solar System, Week 2

Front

The sun together with the group of celestial bodies that are held together by its attraction and revolve around it.

Back

Solar System

Front

An object that orbits a star, is large enough to be nearly spherical in shape, and has no other large object in its orbital path.

Back

Planet

Front

The path an object follows as it moves around another object.

Back

Orbit

Front

A stretched out circle

Back

Ellipse

Front

The measure of how far an object's orbit is from being circular

Back

Eccentricity

Front

An attractive force that exists between all objects that have mass

Back

Gravity

Front

A measure of how hard it is to stop a moving object

Back

Momentum

Front

The tendency for objects in motion to resist changes in their direction and speed

Back

Inertia

Front

The time it takes an object to travel once around the sun

Back

Period of Revolution

Front

The time it takes an object to complete one rotation

Back

Period of Rotation