Kepler's Laws

What is Kepler's First Law also known as?

• Law of Parabolas

• Law of Ellipses

• Law of Hyperbolas

• Law of Circles

According to Kepler's Second Law, what happens to a planet's speed as it moves closer to the Sun?

• Speed becomes negative

• Speed remains constant

• Speed decreases

• Speed increases

Kepler's Third Law states that the square of the orbital period of a planet is proportional to what?

• square of the semi-major axis of its orbit

• radius of the planet

• inverse of the planet's mass

• cube of the semi-major axis of its orbit

What shape do planets follow in their orbits according to Kepler's First Law?

• Elliptical

• Triangular

• Rectangular

• Circular

In Kepler's Second Law, what is the line connecting a planet to the Sun called?

• radius vector

• star line

• solar vector

• orbit line

What is the mathematical representation of Kepler's Third Law?

• T^2 = k / a

• T = k * a^3

• T^3 = k * a^2

• T^2 = k * a^3

How many laws did Johannes Kepler formulate regarding planetary motion?

• 6

• 4

• 5

• 3

What is the relationship between a planet's distance from the Sun and its orbital period according to Kepler's Third Law?

• The orbital period is unrelated to the distance from the Sun

• The orbital period is directly proportional to the distance from the Sun

• The orbital period is inversely proportional to the distance from the Sun

• The relationship between a planet's distance from the Sun and its orbital period according to Kepler's Third Law is that the square of the orbital period is directly proportional to the cube of the average distance from the Sun.