| A | B |
|---|
| region | An area with common features that set it apart from other areas. |
| geography | The study of Earth and the way people, plants, and animals live on it and use it. |
| landform | Any of the shapes that make up Earth's surface. |
| plain | An area of nearly flat land. |
| plateau | High, flat landforms that rise steeply above the surrounding land. |
| glacier | A sheet of ice that slowly moves across the land. |
| Ice Age | A long period of time, about 10,000 years ago, when temperatures were very cold. |
| volcano | An opening in Earth's surface from which hot liquid rock may pour. |
| Taum Sauk Mountain | Missouri's highest point, 1,772 feet, created by a volcano. |
| Glaciated Till Plain | The region north of the Missouri River that was once covered by glaciers and now has rich soil. |
| Osage Plains | The region that is part of the Great Plains and is good for growing grain and raising animals. |
| Ozark Highland | Missouri's largest region; characterized by steep hills, rocky soils, and caves. |
| Mississippi Lowlands | The region in southeast Missouri called the Bootheel. |
| Alluvial River Plain | A flood plain region where Missouri's two largest cities are located. |
| border | A line that people agree on to separate two places. |
| source | A place where something begins. |
| mouth | The place where a river flows into another larger body of water. |
| tributary | A river that flows into another larger river. |
| silt | Small particles of soil and sand. |
| hydroelectric power | Electricity produced by water. |
| barge | A huge, flat riverboat. |
| recreation | What people do in order to relax or enjoy themselves. |
| dam | Structures made os earth, concrete, or material built to hold back flowing water. |
| Mark Twain | Pen name of author Samuel Clemens (1835-1910) |
| St. Louis | A city eastern Missouri, located near the joining of the Missouri and Mississippi Rivers. |
| Missouri River | A large tributary of the Mississippi, flowing fromm Montana to the Mississippi River, north of St.Louis. |
| Mississippi River | One of the longest rivers in North America. It flows soutn from northern Minnesota into the Gulf of Mexico. |
| environment | The surroundings in which people, plants, or animals live. |
| natural resource | Something in the environment that people can use. |
| mineral | Natural resources that are found in the earth. |
| nonrenewable | Natural resources that cannot be replaced. |
| renewable | Natural resources that can be renewed or replaced. |
| erosion | A process by which water and wind wear away the top layer of soil. |
| pollution | Anything that makes our soil, air, or water dirty. |
| conservation | The careful use of our natural resources. |
| recycle | To use something agaiin instead of discarding it. |
| weather | The condition of the air at a certain time and place. |
| climate | The pattern of weather of a certain place over many years. |
| temperature | The measurement of heat and cold. |
| precipitation | The moisture that falls to the ground as rain, snow sleet, or hail. |
| Phillipe Renault | A Frenchman who established the first lead mine in Missouri, in the 1600s. |
| Fredericktown | A town near Ste. Genevieve where workers who were looking for gold found lead and started the first large lead mine in Missouri. |
| Ste. Genevieve | The oldest European settlement in Missouri, founded by French traders in 1735. |
