Download presentation
Presentation is loading. Please wait.
1
I. Antarctica Chapter 18
3
A. Final Frontier Fossils on Antarctica show that dinosaurs and mammals once live here 98% - Of Antarctica is covered with ice Only major landmass without permanent human settlement 70% - Of the earth’s fresh water is trap within the ice
4
Land of Snow & Ice
5
B. Ice, Ice Baby 5,600-7,200 – Feet of ice that cover most of the land
Polar Desert – Largest and coldest desert on earth Average temperature in Antarctica is around -71 F Receives less than 2 inches of precipitation per year
7
Wave Frozen in Midair
9
C. More Ice Ice Shelf – Layer of ice above the ocean that is connected to land on one side Convergence Zone – Area where Antarctica’s cold waters meet the warm waters of the ocean Results in huge storms and winds over 120 MPH
13
D. Resources Penguins, fish, whales, and many birds live in the water around Antarctica Krill – Shrimp like animals that provide most of the food supply Scientist believe that resources like gold and oil are located on the continent
14
Penguins at Home
15
E. Sharing the Wealth Antarctic Treaty – 43 countries agreed not to take resources or test nuclear weapons Over 20,000 scientists come to study the continent each year Hope to learn how life was like millions of years ago
16
U.S. Resource Base Resource Base Video
17
F. Global Warming Global Warming – Theory that worldwide temperatures are rising because of human activities and burning fossil fuels Average temperatures have risen over 4.5 F in the past 50 years 2002 – A part of the ice shelf broke off 1st time this has happened in the last 11,000 years
19
Collapse of the Ice Shelf
23
Sorry about your home in the North Pole!
26
River of Glacier Ice 2007
27
Glacier Melting – January 2008
29
Global Warming
Similar presentations
© 2024 SlidePlayer.com. Inc.
All rights reserved.