The Polar Ice Caps and Global Warming

1
The Polar Ice Caps and Global Warming

2
Ice Caps?

• The ice caps help to regulate the planets
  temperature they absorb heat from the ocean,
  which absorbs heat from the atmosphere.(lantent
  heat of melting)
• If the ice caps are melting, then they cant
  absorb as much heat from the ocean, which then
  cant absorb heat from our atmosphere, which is
  getting warmer. (global warming!)

3
Water displacement

• When floating ice (ice bergs) melts, the sea
  level should not change because water has already
  been displaced by the floating ice.
• When land ice (glaciers) fall into the ocean (as
  ice or water), the sea level rises because the
  weight of this ice has not yet been displaced.

4
Rising Sea Levels

• The sea levels will also rise because of rising
  temperatures. The ocean will expand as it gets
  warmer.
• A century ago, costal sea levels had been rising
  by a millimeter a year. For the last 20 years, it
  has been increasing by 2 millimeters, and within
  the last century, it has increased to 3
  millimeters.

5
Rising Sea Levels Cause

• More hurricane storm surges
• High tides
• Costal areas (like Florida) would be in danger of
  flooding.

6
Global Warming

• green house affect gases like CO2 trap heat.
  (Green House gases)
• To keep the affects of global warming from
  getting worse, green house gas emissions would
  have to be reduced by 80

7
Green House Affect
From How Stuff Works. lthttp//science.howstuffwo
rks.com/question779.htmgt