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Earth Portrait of a Planet Chapter 23 Norton Media Library. Fig. 23.00. (c) DigitalVision/PictureQuest. Fig. 23.01. W. W. Norton. Fig. 23.02. W. W. Norton. Fig. 23.03 a. NASA. Fig. 23.03 b. NASA. Fig. 23.03 c. NASA. Fig. 23.04 a, b. W. W. Norton. Fig. 23.04 c. W. W. Norton. - PowerPoint PPT Presentation
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EarthEarthPortrait of a PlanetPortrait of a Planet
Chapter 23Chapter 23Norton Media LibraryNorton Media Library
(c) DigitalVision/PictureQuest
W. W. Norton
W. W. Norton
NASA
NASA
NASA
W. W. Norton
W. W. Norton
W. W. Norton
W. W. Norton
W. W. Norton
W. W. Norton
W. W. Norton. After Van Andel, 1994
W. W. Norton. After Sloss, 1962
W. W. Norton. After Boggs, 1995
W. W. Norton. After Van Andel, 1994
original artwork by Gary Hincks
W. W. Norton
W. W. Norton
W. W. Norton
W. W. Norton
W. W. Norton. After Johnson, 1972
W. W. Norton. After Van Andel, 1994
Snowball Earth
The Snowball Earth Hypothesis proposes that during an ice age 900 mya, the entire land and oceanic surface the Earth was covered by ice. This animation shows four proposed stages to the formation and destruction of Snowball Earth conditions:
· During "normal" climate periods there are ice caps at the poles; sea level rises and falls.
· During "metastable" climate times ice sheets expand and contract dramatically.
· "Runaway snowball" conditions develop and ice nearly envelopes the Earth; atmospheric carbon dioxide is not absorbed by the frozen ocean.
· The rising concentration of unabsorbed carbon dioxide gas leads to a "runaway greenhouse effect"; Earth warms and the ice shell rapidly vanishes.
[by Declan DePaor]
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W. W. Norton. After Kump et al., 1999
W. W. Norton. After Kump et al., 1999
W. W. Norton
W. W. Norton. After McKenzie, 1998
Courtesy of SOHO/MDI consortium. SOHO is a project of international cooperation between ESA and NASA
W. W. Norton. Adapted from Chaisson and McMillan, 1998
W. W. Norton. After Kump et al., 1999
W. W. Norton
W. W. Norton. After Turco, 1997
Courtesy of GSFC/NASA
W. W. Norton. After Turco, 1997
W. W. Norton. Adapted from McKenzie, 1998
W. W. Norton. Adapted from McKenzie, 1998
W. W. Norton. Adapted from McKenzie, 1998
W. W. Norton. Adapted from McKenzie, 1998
W. W. Norton. Adapted from Kattenberg et al., 1996
W. W. Norton. Adapted from McKenzie, 1998.
W. W. Norton. Adapted from McKenzie, 1998.
W. W. Norton. Adapted from McKenzie, 1998.
W. W. Norton. Adapted from McKenzie, 1998.
W. W. Norton
W. W. Norton & CompanyIndependent and Employee-Owned
This concludes the Norton Media Library Slide Set for Chapter 23.
EARTH: Portrait of a Planet
by Stephen Marshak.
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