Chapter 7 Review

Compared to the distance between Earth and Mars, the distance between Jupiter and Saturn is

Much larger

"Rocky asteroids are found primarily in the asteroid belt and Kuiper belt while icy comets are found primarily in the Oort cloud." What's wrong with this statement?

The Kuiper belt contains icy comets, not rocky asteroids.

Where the weather conditions on Mars today are much different than they were in the distant past?

Yes. There is evidence of a planet with water and warmer weather. Riverbeds, oceans, etc.

The dwarf planet Eris was discovered in 2005, orbiting the Sun at an average distance about twice that of Pluto. In which of the following ways do Pluto and Eris differ from the terrestrial and jovian planets in our solar system?

1.Both Pluto and Eris are smaller than any of the terrestrial planets. 2. Both Pluto and Eris travel in more elliptical orbits than any of the terrestrial or jovian planets. 3.Both Pluto and Eris are less massive than any of the terrestrial or jovian planets.

Assuming that other planetary systems form in the same way as our solar system formed, where would you expect to find terrestrial planets?

Based on what we find in our own solar system, we expect terrestrial planets to form close to a star and jovian planets to form farther out.

Our Moon is about the same size as moons of the other terrestrial planets.

False. The moon is very large compared to its relative size to Earth but not necessarily large compared to other moons. Compared to the moons close to Earth, ours is large.

What planet is the hottest in our Solar System.

Venus. Venus has a thick atmosphere of CO2 and traps heat and pressure in.

Compared to terrestrial planets, jovian planets are

more massive and lower in average density

Large moons orbit their planets in the same direction the planet rotates:

most of the time.

How is Einstein's famous equation, E=mc 2, important in understanding the Sun?

the Sun generates energy to shine by losing some 4 million tons of mass each second