The Solar System

Question 1

How did Kepler describe the planets’ orbits?

Revolt · Accepted Answer

The planets’ orbits are elliptical.

Question 2

Which two gaseous giants did Renaissance scientists such as Galileo know about?

Revolt · Accepted Answer

Jupiter and Saturn

Question 3

In addition to proposing that planetary orbits are elliptical, what other modification did Kepler make to Copernicus’s model?

Revolt · Accepted Answer

Planets closer to the Sun move faster.

Question 4

Which idea was supported by Aristarchus, Copernicus, and Galileo?

Revolt · Accepted Answer

The planets revolve around the Sun.

Question 5

What do comets and asteroids have in common?

Revolt · Accepted Answer

They orbit the Sun.

Question 6

Which describes one way that Aristarchus's explanation of the movement of objects in the sky was different from other scientists' earlier explanations?

Revolt · Accepted Answer

He argued that Earth rotates on its axis.

Question 7

Which event took place during the Copernican revolution, when most people started to believe in a heliocentric model of the solar system?

Revolt · Accepted Answer

Kepler's laws of planetary motion.

Question 8

Look at the diagram of the solar system.

Revolt · Accepted Answer

retrograde motion

Question 9

Look at the image of the solar system.

Revolt · Accepted Answer

Y

Question 10

Which idea did Ptolemy’s model use to explain why the planets appeared to move backward as they moved in their orbits?

Revolt · Accepted Answer

The planets spun in epicycles.

The Solar System Answers

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