4-4 Kepler's Laws of Motion

Front

What are Kepler's Laws of Motion?

Back

Kepler's Laws of Motion describe the motion of planets around the sun, consisting of three laws: 1) The Law of Orbits, 2) The Law of Areas, and 3) The Law of Periods.

Front

What does Kepler's 1st Law state?

Back

Kepler's 1st Law states that planets move in elliptical orbits with the sun at one focus.

Front

What is the significance of Kepler's 2nd Law?

Back

Kepler's 2nd Law, also known as the Law of Areas, states that a line segment joining a planet and the sun sweeps out equal areas during equal intervals of time, meaning a planet moves faster when closer to the sun.

Front

What does Kepler's 3rd Law relate to?

Back

Kepler's 3rd Law relates the square of the orbital period of a planet to the cube of the semi-major axis of its orbit, expressed as T² ∝ r³.

Front

During which month is the Earth moving the slowest?

Back

July.

Front

What happens to a planet's orbital speed as it moves farther from the sun?

Back

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

Front

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

Back

A planet moves slower when it is farthest from the sun.

Front

At which position does a planet moving counterclockwise in its orbit increase speed?

Back

At position P4.

Front

What does Kepler's 2nd Law deal with?

Back

Kepler's 2nd Law deals with the area a planet travels in its orbit.

Front

Define elliptical orbit.

Back

An elliptical orbit is an oval-shaped path that a celestial body follows around another body, with two focal points.