| A | B |
| physical feature | a feature found in nature, such as weather, plant life, water, or land |
| natural resource | an item from nature that people can use, such as trees, water, or soil |
| environment | the physical and human features of a place |
| human feature | a feature such as a building, bridge, or road, that people add to a landscape |
| conservation | the saving of resources to make them last longer |
| geographic tool | resources like maps and globes that can tell us where a place is and what it might look like |
| continents | the largest land areas |
| hemispheres | half of the earth |
| equator | an imaginary line that is halfway between the North and South Poles |
| border | a line that shows where a state or a country ends |
| relative location | the location of a place in relation to another place |
| absolute location | the exact location of a place |
| latitude | the lines that run east and west on a globe |
| longitude | the lines that run north and south on a globe |
| prime meridian | the meridian of 0 degrees longitude |
| solution | an answer to a problem |
| mountain range | a large chain of mountains |
| valley | a lowland that lies between hills or mountains |
| plateau | a landform with steep sides and a flat top |
| vegetation | the plants that grow in a place |
| growing season | the time in which plants can grow |
| erosion | the wearing away of Earth's surface over a period of time |
| ecosystem | the plants, animals, land, water, and climate that make up an area. |
| preserve | to save |
| natural disaster | an event in nature that causes great harm or damage to people and their property |
| mineral | a kind of natural resource found in the ground, such as iron or gold |
| renewable | able to be made or grown again by nature or people |
| nonrenewable | not able to be made again quickly by nature or people |
| fuel | a natural resrouce that is burned to make heat or energy |
| adapt | to change |
| pictograph | a graph that uses pictures or symbols to show the numbers of things |
| bar graph | a graph that uses bars to show amounts |
| modify | to change |
| tunnel | a path that runs through or under something |
| irrigation | the moving of water to dry areas |
| dam | an earthen or concrete structure that holds back water |
| canal | a human-made waterway dug across land |
| reservoir | a human-made lake used for collecting and storing water |
| terrace | giant steps cut into hillsides for farming |
| pollution | anything that makes a natural resource dirty or unsafe to use |
| recycle | to reuse resources |
| problem | something that is difficult or hard to understand |