Some farmers practice ___________ to avoid using all of the minerals in the soil.
Why do some farmers practice crop rotation?
100
______________ describes the unpredictable changes in air that occur over a short period of time.
What is weather?
100
The warm current called the _________________ flows along the east coast of North America and crosses to Europe, where it is called the ________________.
What is the Gulf Stream?
What is the North Atlantic Current?
100
Te two types of tropical climate regions are ______ and ____.
What are the tropical rain forest and the tropical savanna climates?
100
________ degrees N to the _________/ _________ degrees S to the ________________.
What are the high latitude climates?
200
A ___________ is a vast treeless plain with permafrost.
What is a tundra?
200
____________, _____________, and _______ _________ are the three forms of water found on the earth.
What are liquid, ice, and water vapor.
200
______________ and _________ __________ _________ hold about 80% of the earth's freshwater.
What are glaciers?
What are polar ice caps?
200
_____________ are the only things that can grow in the ice cap climate.
What are lichens?
200
The driest climates receive less than ________ inches per year.
What is 10 inches?
300
The ____________ is the highland climate elevation above which no trees grow.
What is the timberline?
300
The areas near the Equator are known as the __________.
What are the Tropics?
300
______________ is the usual, predictable pattern of weather in a certain area over a long period of time.
What is climate?
300
______________ are seasonal winds that blow over continents for months at a time, mainly in _________ and Africa/
What are monsoons?
What is Asia?
300
_____________ are dangerous, funnel-shaped windstorms.
What are tornadoes?
400
________________ form when cold winds from the east are weak.
What are El Ninos?
400
Climate is affected by the sun, wind, ocean currents, and _______________.
What are landforms?
400
Scientists look at the extremes of ___________ and precipitation in order to understand the __________ of an area.
What is temperature?
What is climate?
400
Differences: the tropical rain forest is _____________;the tropical savanna climates has __________ and ________.
What is very wet--for the tropical rain forest?
What is a wet season and a dry season?
400
The four basic parts of the earth's physical geography are ____________, ___________, ____________, and ______________.
What are the atmosphere, lithosphere, hydrosphere, and the biosphere?
500
The three global effects of air pollution are _________, _________, and _____________.
What are global warming, ozone depletion, and acid rain?
500
_____________ is carried away by ____________ and _____________in the deforestation process.
What are topsoil, wind, and water?
500
The constant movement of water, is a process known as the __________ ___________.
What is the water cycle?
500
Under the earth's surface, ____________ can accumulate in an _______________, or a rock layer that water flows through.
What is groundwater?
What is an aquifer?
500
_____________ are places where the plants and animals are dependent upon one another and their surroundings for survival.