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Processes of the Water Cycle

The processes of the water cycle including evaporation, precipitation and sublimation carry water between reservoirs.

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Rainy Forests

Rainy Forests

License: CC BY-NC 3.0

The Amazon Rainforest in Brazil makes its own weather - a lot of that weather is rain! But what came first: the rain or the rainforest?

Why It Matters

Credit: Jorge.kike.medina
Source: http://en.wikipedia.org/wiki/File:Campo12Foto_2.JPG
License: CC BY-NC 3.0

Amazon rainforest [Figure2]

  • Average annual rainfall in a tropical rainforest is around 70 inches a year.
  • Tropical rainforests are found in the equatorial regions where warm air rises, cools and precipitates.
  • Transpiration in the rainforest leads to precipitation over the rainforest.
  • Angiosperms move a lot of water from the soil to the atmosphere.
  • Logging the rainforest has many deleterious effects. One is a change in the region’s climate.

Explore More

With the link below, learn more about rainy forests. Then answer the following questions.

  1. How do rainforests produce their own rain?
  2. What happens if the cycle of transpiration to precipitation slows down as happens in pine forests?
  3. Why are the tropical regions populated with angiosperms rather than gymnosperms?
  4. What do scientists fear the effect of continued logging will be on the rainforests?
  5. What came first, the rain or the rainforest?

Image Attributions

  1. [1]^ License: CC BY-NC 3.0
  2. [2]^ Credit: Jorge.kike.medina; Source: http://en.wikipedia.org/wiki/File:Campo12Foto_2.JPG; License: CC BY-NC 3.0


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