Keplers Laws

Front

What does Kepler's 1st Law state?

Back

All planets move in elliptical shaped orbits around the sun.

Front

What happens to a planet's speed when it is farthest from the sun?

Back

The planet moves slower.

Front

What is the formula for eccentricity?

Back

Distance between foci / Length of major axis.

Front

Where is a planet moving faster in its orbit?

Back

Position A to B.

Front

What is the relationship between a planet's distance from the sun and the time it takes to orbit?

Back

The farther away a planet is from the sun, the longer it takes to orbit the sun once.

Front

What shape do the orbits of planets take according to Kepler's laws?

Back

Elliptical.

Front

What is the significance of the foci in an ellipse?

Back

An ellipse has two foci, and the sum of the distances from any point on the ellipse to the foci is constant.

Front

How does the speed of a planet change as it orbits the sun?

Back

A planet moves faster when it is closer to the sun and slower when it is farther away.

Front

What is Kepler's 2nd Law?

Back

A line segment joining a planet and the sun sweeps out equal areas during equal intervals of time.

Front

What does Kepler's 3rd Law state?

Back

The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.