GPH 314 Final Exam | Questions and 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. True The early precambrian period wa...
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.
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"
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.
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
Why did sea level go down during glacial periods?
As glaciers stored more water as ice, sea level dropped
When did mild and tropical conditions first appear on earth?
500 million years ago
How much of the Earth's landmass is covered by urban areas?
2-3%
How many mass extinctions has earth had in the last 5 billion years?
5
On Planet Earth, Giant Ergs (sand seas like the Sahara Desert) are produced by what
general type of process?
, Wet periods decay the rock producing sand, and then winds during dry periods
transport the sand to the sand sea.
The forming and melting of glaciers results in changes of sea level. This process is
referred to as:
Eustatic sea level rise
What caused the "Year Without a Summer"?
A volcano eruption that occurred the year before.
If all the frozen fresh water on Earth were to melt, how much would the oceans rise?
Over 200 feet
Which interglacial period occurred most recently?
The Holocene
In the last Ice age, cold areas that were too dry to form glaciers, where covered by
what?
- Patterned ground
- Ice wedge polygons
- Solifluction and pingoes
- All of these are correct
In the past, Calcium Carbonate springs formed in paleolakes, the results evident today
are:
Tufa Towers
How much of the Earth landmass is covered by trees?
31%
Considering the mass bleaching event that occurred from 2016 to 2017, about what
percentage of coral reefs were killed?
50
The 1980s were a relatively hot period, followed by a slight cooling in the 1990s. THis
cooling was largely attributed to:
the eruption of Mt. Pinatubo
What would be the best description of the global climate over the last 60 million years?
The climate gradually cooled
How much of all ocean species depend on and feed from Coral Reefs?
25%
What is the length of the delay between carbon emissions and their effects on oceans?
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