My Crossword Maker Logo
Powered by BrightSprout
Controls:
SPACEBAR SWITCHES TYPING DIRECTION
Answer Key:
Edit a Copy:
Make Your Own:
Crossword Word Search Worksheet
Rate This Puzzle:
Log in or sign up to rate this puzzle.

Chapter 12 Lesson 1

1
2
3
4
5
6
7
8
9
Across
2
The _ is the atmospheric layer farthest from Earth.
5
Earth is protected from most _ collisions by the mesosphere and thermosphere.
6
The oxygen in Earth's atmosphere is a product of _
8
_ in the stratosphere absorbs harmful ultraviolet rays from the Sun.
9
Water Vapor in the troposphere plays a key role in Earth's _.
Down
1
Air pressure _ with altitude, so it is harder to breathe at the top of a mountain
3
__occur(s) when ions from the Sun strike air molecules.
4
The air - at the top of Mount Everest is lower than the _ at its base.
5
This layer helps to protect Earth from Meteorites.
7
_ gas is the most abundant gas in Earth's atmosphere