| A | B |
|---|
| continent | one of seven largest land areas on Earth |
| border | a line that shows the end of a place |
| absolute location | the exact position of a place on Earth, using lines of latitude and longitude |
| basin | low, bowl-shaped land with higher ground all around |
| canyon | a deep, narrow valley with steep sides |
| elevation | the height of the land above sea level |
| hemisphere | a half of the Earth or sphere |
| gulf | a part of an ocean or sea extending into the land |
| lines of longitude | a set of lines that runs north and south from the North Pole to the South Pole, drawn on maps and globes. They are measured in degrees east and west of the Prime Meridian |
| lines of latitude | A set of lines that run east and west drawn on maps and globes. They are measured in degrees north and south from the Equator. |
| landform | One of the shapes that makes up Earth's surface such as plains, hills, mountains, or valleys. |
| mouth | The place where a river empties into a larger body of water. |
| Prime Meridian | An imaginary line that is often used to divide Earth into the Western Hemisphere and the Eastern Hemisphere. |
| relative location | Where a place is in relation to one or more other places on Earth |
| sea level | the level ofthe surface of the ocean |
| plateau | An area of high, flat land. |
| relief | The differences in the heights of land shown in maps. |
| tributary | A river or stream that flows into a larger river. |
| climate | The kind of weather a place has most often, year after year |
| environment | surroundings in which people, plants, and animals live |
| humidity | The amount of moisture in the air. |
| line graph | A graph that uses a line to show changes over time. |
| natural resource | Something found in nature, such as water, soil, or minerals, that people can use to meet their needs. |
| groundwater | Water that sinks beneath Earth's surface when it rains or snows. |
| industry | All the businesses that make one kind of proudct or provide one kind of service. |
| mineral | A natural substance found in rocks. |
| nonrenewable | Something that cannot be made again by nature or by people. |
| conservation | The protection and wise use of natural resources. |
| precipitation | Water that falls to Earth's surface as rain, sleet, hail, or snow. |
| renewable | Something that can be made again by nature or people. |
