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Landforms of the United States
Rivers Change the Land
A Land of Different Climates
A Rich Fertile Land
People and the Environment
100
A low land that lies along an ocean.
What is a coastal plain?
100
The water beneath the Earth's surface.
What is groundwater?
100
Water, rain, sleet, or snow that falls to the Earth's surface.
What is precipitation?
100
Trees, water, minerals and oil.
What are Earth's natural resources?
100
A change, that makes an environment more useful to people.
What is an adaptation?
200
Land that is almost entirely surrounded by water.
What is a peninsula?
200
The place where a river begins.
What is a source?
200
The imaginary line that runs through the Earth from the North Pole to the South Pole.
What is an axis?
200
Something that people make or grow, usually to sell.
What is a product?
200
Protecting our natural resources and using them wisely.
What is conservation?
300
High, mostly flat land.
What is a plateau?
300
The place where a river empties into some larger body of water.
What is a mouth?
300
The amount of moisture in the air.
What is humidity.
300
A natural substance found in rocks.
What is a mineral?
300
Limited resources.
What is scarce?
400
A group of connected mountains.
What is a mountain range?
400
A stream or river that flows into a larger stream or river.
What is a tributary?
400
The Earth takes one day to make a complete turn.
What is a rotation?
400
The making of goods.
What is manufacturing?
400
Anything that makes a natural resource dirty or unsafe to use.
What is pollution?
500
A deep, narrow valley with steep sides.
What is a canyon?
500
The wearing away of the Earth's surface.
What is erosion?
500
The Earth's movements, seasons, distance from the equator, land and water, and elevation.
What are things that affect the Earth's climate?
500
The way people in a state, a region, or a country use resources to meet their needs.
What is an economy?
500
Minerals and fuels that cannot be replaced.
What are limited resources?