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GPH 314 Final Exam | Questions and Answers
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GPH 314 Final Exam | Questionsand Answers
According to the Peter Ward group--Kump et al Hypothesis--in the TED talk
"Mass Extinction Events" the lowering of Oxygen levels and the increase of
Carbon Dioxide has been the cause of most mass extinctions on Earth. -
answer-True
The early precambrian period was characterized by which of the following:
-The first appearance of plant life on Earth
-Very hot conditions that resulted from a combination of factors including
radioactive heat resulting from the Earth's formation
- The formation of the supercontinent Pangaea
- Many ice ages, including the "Little Ice Age" - answer-Very hot conditions
that resulted from a combination of factors including radioactive heat
resulting from the Earth's formation
From the faculty presentation on Glacial loess from the last ice age, please
select the location of glacial loess deposits would best be found?
- All of these are correct
- Palouse country of eastern Washington
- Loess Plateau in China
- Midwest of the U.S. - answer-All of these are correct
,What choice of the following is NOT an example of a fast feedback
mechanism?
- Changes in atmospheric cloud quantities
- All of these are examples of fast feedback mechanisms
- Changes in atmospheric water vapor quantities
- Changes in Earth's Ice Sheet quantities - answer-Changes in Earth's ice
sheet quantities
Why did sea level go down during glacial periods? - answer-As glaciers stored
more water as ice, sea level dropped
When did mild and tropical conditions first appear on earth? - answer-500
million years ago
How much of the Earth's landmass is covered by urban areas? - answer-2-3%
Considering the mass bleaching event that occurred from 2016 to 2017, about
what percentage of coral reefs were killed? - answer-50
The 1980s were a relatively hot period, followed by a slight cooling in the
1990s. THis cooling was largely attributed to: - answer-the eruption of Mt.
Pinatubo
What would be the best description of the global climate over the last 60
million years? - answer-The climate gradually cooled
, How much of all ocean species depend on and feed from Coral Reefs? -
answer-25%
What is the length of the delay between carbon emissions and their effects on
oceans? - answer-About 20 years
Why was the Earth's temperature much different in the early Precambrian
period (~4.6 to 2.5 billion years ago) than it is today? - answer-Radioactivity
and meteorite bombardment
There was a mass extinction event approximately 65 million years ago. What
evidence led scientists to determine the most likely cause?
- Traces of iridium were found on Earth
- An impact crater was discovered
- A global layer of charcoal in Earth's soil was discovered
- All choices are correct - answer-All choices are correct
How much of the Earth's Freshwater is locked up in the Ice Caps and
Glaciers? - answer-69%
Which of the following statements is true about clouds? - answer-If present
during the day, clouds block incoming sunlight and solar radiation. If present
at night, they block outgoing radiation.
How many types of precipitation are there? - answer-6: Dizzle, Rain, Sleet,
Snow, Graupel, and Hail
Atmospheric rivers exist high in the atmosphere and require weak winds and
high amounts of moisture to transport moisture horizontally. - answer-False
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