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Riddles
• 1. What has 4 eyes but can’t see?
• 2. If I have it, I don’t share it. If I share it, I don’t have it. What is it?
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According to the graph below, what wavelength
of energy does the Earth receive in the greatest intensity?
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Name the primary gaswhich absorbs ultraviolet (UV)
from the sun.
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Name the three primary gaseswhich absorb infrared (IR) energy
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Why is the ozonelayer important?
It protects the Earth from UV which damages crops andcauses cancer in humans.
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Why is it warmer on acloudy night than on a clear night?
Clouds (H2O vapor) absorb IR energy radiated by the Earth. On a clear night, the IR energy escapes
back into space.
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Explain the greenhouse effect. Include a diagram which shows the
change in wavelength.
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Ice Ages are cyclic.
The last one occurred ~12,000 years ago
The exact cause of what triggers an ice age
is not known
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El Niño
A warming of thePacific Ocean.
Winters:West = Stormy
South = Cold, wetNortheast = warmer
El Niño
A warming of thePacific Ocean.
Winters:West = Stormy
South = Cold, wetNortheast = warmer
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La NiñaA cooling of the Pacific Ocean.
Dry in southeast. Cool, wet in northwest.
La NiñaA cooling of the Pacific Ocean.
Dry in southeast. Cool, wet in northwest.
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Average global temperatures are increasing.
Glaciers are melting.Ocean levels are rising.
Warming is natural.
Humans are speeding up the process through increased levels of
carbon dioxide (CO2)
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Mountain Glaciers
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