ScienceGeologyHW 9
Please enter something

HW 9

Zayne Edwards avatar Zayne Edwards
25 July 2022
4.7 (114 reviews)
15 test answers

Unlock all answers in this set

Unlock answers (11)
question
4)How big an object causes a typical shooting star?
answer
a grain of sand or a small pebble
question
5)A rock found on Earth that crashed down from space is called _________
answer
a meteorite
question
6)The processes responsible for virtually all surface geology are _________
answer
impact cratering, volcanisms, tectonics, and erosion
question
7)Which of the following best describes the lunar maria?
answer
relatively smooth, flat plains on the Moon
question
8)Which describes our understanding of flowing water on Mars?
answer
It was important once, but no longer.
question
9)The relatively few craters that we see within the lunar maria
answer
were formed by impacts that occurred after those that formed most of the craters in the lunar highlands.
question
11)How did the lunar maria form?
answer
Large impacts fractured the Moon's lithosphere, allowing lava to fill the impact basins.
question
12)Why does the Moon have a layer of powdery "soil" on its surface?
answer
It's the result of gradual erosion by micrometeorites striking the Moon.
question
14)Why do we think Mercury has so many tremendous cliffs?
answer
They were probably formed by tectonic stresses when the entire planet shrank as its core cooled.
question
15)How have we been able to construct detailed maps of surface features on Venus?
answer
by using radar from spacecraft that were sent to orbit Venus
question
17)Earth is the only planet in the solar system known to have plate tectonics.
answer
true
question
18)Which terrestrial world has the most atmosphere?
answer
Venus
question
19)Which planet(s) have an atmosphere that consists mostly of carbon dioxide?
answer
Venus and Mars
question
20)What do we mean by a runaway greenhouse effect?
answer
a greenhouse effect that keeps getting stronger until all of a planet's greenhouse gases are in its atmosphere
question
21)Why is Mars red?
answer
Its surface rocks were rusted by oxygen.