Kepler

Front

What is the maximum eccentricity an ellipse can be?

Back

1

Front

What is true about the area between points A, B and the Sun, and the area between points H, I and the Sun?

Back

Both areas are equal in size.

Front

When a planet orbits the Sun, one of the foci of the elliptical orbit is?

Back

the Sun.

Front

The place where a planet is closest to the Sun as it orbits the Sun is called?

Back

perihelion.

Front

What has an eccentricity of zero?

Back

a circle.

Front

Define eccentricity in the context of an ellipse.

Back

Eccentricity is a measure of how much an ellipse deviates from being circular, ranging from 0 (circle) to 1 (line).

Front

What is the aphelion in an orbit?

Back

The aphelion is the point in the orbit of a planet where it is farthest from the Sun.

Front

What shape describes the orbits of planets around the Sun according to Kepler's First Law?

Back

Ellipses.

Front

What does Kepler's Second Law state about the speed of a planet in its orbit?

Back

A planet moves faster when it is closer to the Sun and slower when it is farther from the Sun.

Front

What is the significance of the foci in an elliptical orbit?

Back

The foci are the two fixed points in an ellipse; one focus is the Sun in planetary orbits.