EARTH SCIENCE
CLIMATE AND ENVIRONMENTAL CHANGE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Scientists can study Earth’s climate up to almost a million years ago-before people even existed
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NASA uses space satellite data to study climate issues and sea ice on the surface of Earth
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Scientists collect temperature data from 15 land-based data stations around the world
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None of the above
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Detailed explanation-1: -One way to measure past temperatures is to study ice cores. Whenever snow falls, small bubbles filled with atmospheric gases get trapped within it. In some places, so much snow falls that the older layers become buried and compressed into ice, locking away air bubbles in ice sheets and glaciers.
Detailed explanation-2: -Earth’s temperature has risen by an average of 0.14° Fahrenheit (0.08° Celsius) per decade since 1880, or about 2° F in total. The rate of warming since 1981 is more than twice as fast: 0.32° F (0.18° C) per decade.
Detailed explanation-3: -What is the major trend in the temperature data, and what is causing that to happen? Earth’s temperature is rising several degrees Celsius as the result of increased carbon dioxide in the atmosphere.
Detailed explanation-4: -Introduction. [2] Figure 1 shows that from 1900 to 2000 the global surface temperature progressively increased: T1900–2000 = 0.74 K, T1950–2000 = 0.45 K and T1980–2000 = 0.38 K; the phenomenon of global warming.