Border- an imaginary line that divides one place from another /
Geography- the study of Earth and all the different things on it /
Landform- a shape that makes up the Earth’s surface /
Plain- large area of nearly flat land /
Valley- low patches of land between hills /
Ridge- a narrow chain of mountains /
Plateau- a high, flat area of land that rises steeply above the surrounding land /
River System- made up of all the streams and rivers that flow into one larger river /
Bay- part of an ocean that reaches into the land /
Tributary- a smaller river or stream that flows into a larger river /
Elevation- the height of land above the level of sea /
Weather- the condition of the air at a certain time in a certain place, including temperature, precipitation, and wind / +
Climate- the pattern of weather of a certain place over many years /
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Temperature- a measurement of how hot or cold something is /
Precipitation- the moisture that falls to the ground in the form of rain, snow, sleet, or hail /
Hurricane- a storm with very strong winds and heavy rains /
Tornado- a swirling funnel of wind that moves over the ground at high speeds /
Environment- the surroundings in which people, plants, or animals live /
Natural Resource- something in the environment that people can use /
Renewable Resource- resources we can replace / +
Nonrenewable Resource- resources that are limited /
Fuel- a substance burned as a source of heat and power, such as coal, wood, or oil /
Mineral- a natural substance that is found in the ground and does not come from plants or animals /
Economy- the way a state produces and uses natural resources, goods, and services /
Pollution- the result of carelessly using resources, such as chemicals, that make air, water, or soil dirty /
Conservation- the careful use of a natural resource /
Recycle- to use something again instead of discarding it /
Scarcity- not having enough resources to satisfy people’s needs or wants /