Chapter 7 Astronomy 9e Test

Which of the following is not a kind of geological feature found on the Moon?

• scarp

• crater

• maria

• rille

Basalt, a dense congealed lava rock rich in iron, is the primary material in the Moon's

• highlands

• crust

• maria

• far side's regolith

The large dark areas on the Moon that form the face of the "Man in the Moon" are called what?

• craters and rays

• rilles

• maria

• All of these choices are correct.

The majority of lunar craters formed when (a)   .

• lunar volcanoes erupted

• solid bodies such as asteroids impacted the Moon’s surface

• pieces of the Moon fell off, leaving holes in its surface

• tidal forces from Earth cracked the Moon’s surface

The central peak of a crater is formed by (a)   .

• the upward rebounding of compressed rock

• molten rock being thrown upward and then solidifying

• ejected material falling back into the crater

• None of these choices are correct.

The lunar highlands are composed primarily of (a)   .

• anorthosite

• basalt

• olivine

• silicon dioxide

Tags

NGSS.MS-PS1-1

The lunar maria are primarily composed of (a)   .

• anorthosite

• basalt

• olivine

• silicon dioxide

Why do the lunar maria have a darker color than the highland regions?

• The maria are composed of different materials than the highlands.

• The maria are younger and experienced fewer impacts to weather the surface.

• The maria have less regolith than the highlands.

• The maria are sitting in the shadows of surrounding mountains.

What are rays?

• canyons, caused by lava flows or crustal cracking

• long, light streaks of pulverized rock radiating outward from craters

• mountainous regions

• areas with no craters at all

The lunar highlands have more craters than the maria because (a)   .

• the surface of the maria is liquid and craters quickly disappear there

• the material composing the highlands is very soft and easily cratered

• the maria are much younger than the highlands

• the maria are much older than the highlands