1
Phenomenon where gases allow sunlight to enter Earth's atmosphere but make it difficult for heat to escape
2
All forms in which water falls to Earth from the atmosphere
3
Complex way of life that developed as humans began to develop urban settlements
4
Small area where the climate differs within a larger climate region, such as "heat islands" in a city
5
Degree of hotness or coldness measured by a thermometer with a numerical scale
6
Layers of gases surrounding a planet or other celestial body
7
Any observable occurrence or feature
8
One of the seven main land masses on Earth
9
Height above or below sea level
10
Distance north or south of the Equator, measured in degrees
11
Llikely to change with the seasons
12
Amount of water vapor in the air
13
State of the atmosphere, including temperature, atmospheric pressure, wind, humidity, precipitation, and cloudiness
14
All weather conditions for a given location over a period of time
15
Ecosystem filled with trees and underbrush
16
Period of greatly reduced precipitation
17
Area of land that receives no more than 25 centimeters (10 inches) of precipitation a year
18
very cold
19
Having to do with the North and/or South Pole
20
Body of water surrounded by land
21
Movement of air caused by the uneven heating of the Earth by the sun
