Kepler's Laws

State Kepler's First Law in your own words.

• Planets move in a zigzag pattern around the Sun.

• Planets move in elliptical orbits with the Sun at one of the two foci.

• Planets move in straight lines away from the Sun.

• Planets move in circular orbits around the Sun.

Explain Kepler's Second Law with an example.

• Kepler's Second Law states that planets move in circular orbits around the sun.

• Kepler's Second Law is also known as the Law of Ellipses.

• An example of Kepler's Second Law can be seen in the orbit of a planet like Earth. Earth moves faster when it is closer to the sun (perihelion) and slower when it is farther away (aphelion), resulting in equal areas being swept out in equal times.

• Kepler's Second Law explains the relationship between the distance of a planet from the sun and its orbital speed.

How does the speed of a planet change as it moves around the Sun according to Kepler's Second Law?

• The speed of a planet increases as it moves away from the Sun.

• The speed of a planet remains constant as it moves around the Sun.

• The speed of a planet changes as it moves around the Sun due to its varying distance from the Sun.

• The speed of a planet decreases as it moves closer to the Sun.

How is the period of revolution related to the distance from the Sun according to Kepler's Third Law?

• The period of revolution is directly proportional to the distance from the Sun.

• The period of revolution is constant regardless of the distance from the Sun.

• The period of revolution is inversely proportional to the distance from the Sun.

• The period of revolution is not related to the distance from the Sun.

What are the units typically used for the period and distance in Kepler's Third Law equation?

• Months or decades for period, feet or parsecs for distance

• Minutes or hours for period, kilometers or light-years for distance

• Days or weeks for period, centimeters or parsecs for distance

• Seconds or years for period, meters or astronomical units (AU) for distance

How did Kepler's laws contribute to the understanding of planetary motion?

• Kepler's laws were disproven by later observations of planetary motion.

• Kepler's laws were based on religious beliefs rather than scientific evidence.

• Kepler's laws provided a mathematical description of planetary motion.

• Kepler's laws only applied to a small subset of planets.

Discuss the significance of Kepler's laws in the development of modern astronomy.

• Kepler's laws were crucial in the development of modern astronomy by providing a mathematical framework for understanding planetary motion.

• Kepler's laws were based on astrology rather than science

• Kepler's laws were discovered by Galileo

• Kepler's laws were irrelevant in the development of modern astronomy