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ESE 200 EXAM QUESTIONS COMPLETE WITH DETAILED VERIFIED ANSWERS 100% CORRECT /A+GRADED
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ESE 200 EXAM QUESTIONS COMPLETE WITH DETAILED VERIFIED ANSWERS 100% CORRECT /A+GRADED
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KESE 200 EXAM QUESTIONS
C
LO
COMPLETE WITH
DETAILED VERIFIED
YC
ANSWERS 100% CORRECT
/A+GRADED
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U
ST
, The time between the last 10,000 years and now is known as - ANS the interglacial period
Why does the atmosphere increase the temperature of the Earth? - ANS the atmosphere
reduces the rate at which radiation escapes (the atmosphere stops heat radiation from quickly
escaping the earth, like a blanket)
Which of the following data sources informs us that the Earth's climate varied w the orbital
(Milankovitch) cycles? - ANS ice cores (contain atmospheric samples from hundreds of
thousands of years ago- the same period as the cycles.)
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Near the end of the Cretaceous period, about 65 million years ago, the Earth was much warmer
then it is today. Scientists ascribe this, in part, to - ANS high CO2 concentrations
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How can volcanoes cool the Earth? - ANS by increasing the Earth's albedo (volcanoes add
particles in the atmosphere that reflect light from the sun before it can reach the ground)
LO
Can you use weather data to determine the climate? why? - ANS yes- if you have enough
weather records (climate is the average weather over long periods of time)
What are Milankovitch cycles? - ANS predictable changes in the Earth's orbit (these cycles in
Earth's orbit are predicted by physics)
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Which of the following is a Milankovitch period length that has been observed in Pleistocene
climate records? - ANS 100,000 years
If there was no atmosphere, the Earth's average temp would be about -18 degrees C (below O
degrees F). The Earth is much warmer than this! Why? - ANS The Earth's atmosphere traps
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heat like a natural greenhouse (remember that the atmosphere reflects and absorbs some of
the outgoing radiation so that it spends more time near the Earth's surface)
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According to computer simulations, what is the most likely trend of global temp in the next 100
years? - ANS 3 to 5 F warming (scientists expect the Earth to keep warming at a slightly
higher rate than we've seen in the 20th century)
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According to proxy and instrumental data, what is the general trend of global temperature in the
last 200 years? - ANS 1 to 2 degrees F warming
If the Earth is in "Energy balance", this means: - ANS the incoming energy equals the
outgoing energy (not changing over time)
Why is CO2 thought to act as a "greenhouse gas"? - ANS CO2 is more transparent to visible
then to infrared radiation (the sun's rays come to us in the visible part of the spectrum, but
largely leave in the infrared part)
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