Front

What does Kepler's 1st Law state about the orbits of planets?

Back

The orbits of planets are elliptical.

Front

According to Kepler's 2nd Law, when do planets move the fastest?

Back

Planets move fastest when they are close to the sun.

Front

What force causes planets to move faster when they are closer to the sun according to Kepler's 2nd Law?

Back

Gravity.

Front

Which planet has the shortest year (takes the least amount of time to revolve around the Sun)?

Back

Mercury.

Front

Which planet has the longest year (takes the most amount of time to revolve around the Sun)?

Back

Mars.

Front

What is the shape of the orbits of planets as described by Kepler's 1st Law?

Back

Elliptical.

Front

What is the significance of Kepler's 2nd Law in understanding planetary motion?

Back

It explains that planets sweep out equal areas in equal times, meaning they move faster when closer to the sun.

Front

How does gravity affect the speed of a planet's orbit according to Kepler's Laws?

Back

Gravity pulls planets towards the sun, causing them to move faster when they are closer.

Front

What is the relationship between a planet's distance from the sun and its orbital period?

Back

The farther a planet is from the sun, the longer it takes to complete one orbit.

Front

What is an example of a planet that moves slower in its orbit?

Back

Mars.