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Global Climate Change
•Climate -- _________________________ of temperature and precipitation
•Weather -- _________________________of temperature and precipitation.
•You could break a record for the _________________________ and still be experiencing
_________________________.
_________________________on one particular day is weather, not climate
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A long -term change in the ______________________________________________
Takes place over a period of time that ranges
_____________________________________________
Today it is used to refer specifically to climate change caused by
____________________________________________
Today climate change is generally referred to as
____________________________________________
What Causes Global Warming
•The GREEN HOUSE EFFECT
The greenhouse effect is the ___________________________________________that
the Earth experiences
because certain gases in the
____________________________________________.
Without these gases, heat would ________________________________________
and Earth’s average temperature would be ________________________________.
The temperature in Houston would never get warmer than ____________
and winter would be near ______________.
When the gases are ____________________________________________, they can
heat up Earth too much.
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Very like in your ____________________________________________in Houston
What are greenhouse gases?
______________________________,_____________________________,
___________________________ and _________________________
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Other Causes of Global warming
Plate Tectonics
The position of the ____________________________________________ influences
the patterns of ____________________________________________
The ocean circulation controls the global climate
The seas are important in controlling the
____________________________________________and
____________________________________________ across the globe
Solar Output
The sun is the source ____________________________________________for Earth
Solar output varies ____________________________________________
Solar variations may have ____________________________________________
Solar variations may have been responsible for the
____________________________________________
Solar radiation from ____________________________________________may affect
global warming
Orbital Variations
Slight variations in ____________________________________________cause
change in ____________________________________________of sunlight
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There are three types of variations
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Earth’s ____________________________________________ (a wobble in the
orbit)
Change in ____________________________________________of Earth’s axis
of rotation
____________________________________________ of Earth’s axis (speed of
rotation)
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Combined together and there will be a large impact on
____________________________________________. This could have
____________________________________________
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Volcanism
Eruptions large enough to
____________________________________________occur
____________________________________________per century
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1991 ____________________________________________on thePhilippine
Islands decreased global temperature _________________________________
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1815 Mt. Tambora (in Indonesia) caused the
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It pumped out enormous amounts of
____________________________________________
____________________________________________, destroyed
____________________________________________ and vegetation,
____________________________________________,and even caused tsunamis.
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Ocean Variability
____________________________________________circulation is a powerful force
on the world’s climate system
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It has been known to cause major
____________________________________________in climate over a
realative short-time scale ____________________________________________and
could have triggered one ____________________________________________
Earth has had ____________________________________________.
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Each usually lasted ____________________________________________
The temperature only varied
____________________________________________between the coldest and hottest
part of the ice age cycle
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Research
____________________________________________studies dealing with different
aspects of climate change have been conducted and published