Quiz 6.

NAME:________________________

1. In the space next to each statement, write either "T" for TRUE, or "F" for FALSE. (2 pt. ea.)

T: Six of the planets around our Sun have no moons.

F: Mars has an envelope of hot clouds around it, while the colder Venus has icy polar caps that fluctuate with the Venusian seasons.

F: The terrestrial or "inner planets" are the first five planets from the Sun.

T: One piece of evidence for a massive impact leading to the dinosaurs' extinction is a layer of "space dust" in the Earth's geologic record.

F: The Moon and Mercury have more craters than other planets because they have suffered more impacts.

T: Some of the Jovian planets are heated more by internal heat sources than by the Sun.

2. Which properties apply to which group of planets? (6 pt.) Choose from the list below, and write the corresponding letter next to the appropriate group, inner or Jovian planets:

a. composed mostly of hydrogen (H) and helium (He)
b. have no rings
c. warmer
d. larger masses
e. usually have many moons
f. smaller sizes


3. Multiple choice. Which theory of our Moon's formation did the text most strongly support? (2 pt.)

-----> the giant impact theory