| A | B |
|---|
| economy | the exchange of goods & services |
| goods | things people buy/sell |
| service | work someone is paid to do for someone else |
| geoography | study of Earth & its features |
| environment | everything that surrounds someone (includes air/water/land) |
| hemisphere | any 1/2 of the earth |
| adapt | to change in order to survive in a new environment |
| region | area made up of places that have one or more common features |
| boundary | a line that marks the edge of a region |
| border | the boundaries of countries/states/regions |
| weather | temperature/precipitation/etc that occurs in the air surrounding the earth |
| temperature | measurement of hotness & coldness |
| precipitation | moisture that falls from clouds including both rain & snow |
| climate | usual pattern of weather in an area of the world |
| resource | something that goes into making what people need |
| fossil fuel | resource that comes from living things that died millions of years ago |
| mineral | substance that can be dug up from the earth & sold or traded; stone/coal/gold |
| recycling | reusing things instead of throwing them out |
| landform | physical feature of the earth's surface |
| elevation | height of a landform above or below sea level |
| sea level | height of the surface of the world's oceans |
| erosion | process by which water, ice, and wind wear away soil & rock |
| Continental Divide | stretch of high land along the Rocky Mtns that separates water that flows east from water that flows west |
| volcano | place where melted rock squeezes out from underground |
| erupt | when melted rock inside a volcano bursts out from underground |
| avalanche | large amount of snow and earth that falls down a mountain |
| satellite | a machine that flies in space, circling the earth |
