SCIN 138 Week 7 Exam

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Week 7 Exam

Question 1 of 25

The radiative balance between incoming and outgoing energy is moderated by the _____.

 

  A. climate

  B. global warming

  C. weather

  D. atmosphere

  E. anthroposphere

 

 

 

Question 2 of 25

According to a 2004 study published in the prestigious journal of Science, _____ percentage of climate scientists agree that warming is from human activities.

 

  A. 5%

  B. 97%

  C. 57%

  D. 75%

 

 

 

 

 

 

 

Question 3 of 25

 The process by which increased levels of CO2 in the atmosphere lead to enhanced growth of vegetation, which then removes CO2 from the atmosphere through photosynthesis is termed a _____.

 

 

  A. Milankovitch Cycle

  B. negative feedback

  C. positive feedback

  D. reservoir

   E. sink

 

 

Question 4 of 25

Which of the following is NOT a likely consequence of enhanced global warming?

 

  A. enlarged ozone hole

  B. stronger storms

  C. heat waves

  D. increased droughts

  E. flooding of islands

 

 

 

 

 

 

 

Question 5 of 25

Which of the following is NOT a likely consequence of enhanced global warming?

 

  A. flooding of islands

  B. increased droughts

  C. stronger storms

  D. enlarged ozone hole

  E. heat waves

 

 

 

Question 6 of 25

Evidence of recent climate change is found in _____.

 

  A. ocean acidification

  B. all of the above

  C. decreased crop yields

  D. reduction of sea ice

 

 

 

 

 

 

 

 

Question 7 of 25

_____ in the atmosphere scatter incoming solar radiation, resulting in the cooling of the planet.

 

 

  A. albedos

  B. radiatively active gasses

  C. aerosols

  D. ozones

  E. All of the aforementioned.

 

 

Question 8 of 25

The most probable cause of anthropogenic warming in the foreseeable future is the increase in _____.

 

 

 

  A. ozone

  B. chlorofluorocarbons

  C. chlorine oxides

  D. carbon dioxide

  E. sunlight

 

 

Question 9 of 25

To distinguish between weather and climate, many scientists use a/an _______year average of data.

 

  A. one

 B. 50

  C. 10

  D. 100

  E. 30

 

 

Question 10 of 25

Which is the most abundant of the naturally occurring greenhouse gases?

 

  A. carbon dioxide

  B. ozone

  C. methane

  D. water vapor

  E. nitrous oxide

 

 

 

 

 

 

 

Question 11 of 25

Data from the past 100 years (years 1900 - 2000 average) indicates that global temperatures have increased approximately _____ °C:

 

 

  A. 0.1

  B. 0.2

  C. 0.5

  D. 1.2

  E. 1.5

 

 

 

Question 12 of 25

Which of the following does NOT have a known effect on Earth's global climate?

 

  A. plants

  B. volcanoes

  C. subduction

  D. greenhouse effect

  E. Earth-Moon tidal gravity

 

 

Question 13 of 25

The term _____ refers to wind-related forces.

 

 

  A. saltation

  B. desertification

  C. aeolian

  D. suspension

 

 

 

Question 14 of 25

Which of these desert land forms would most likely be associated with salt flats?

 

  A. Playa

  B. Arroyo

  C. Ephemeral stream

  D. Barchan

  E. Inselberg

 

 

 

 

 

 

 

Question 15 of 25

Which of the following is formed from a natural version of sand blasting?

 

  A. Desert varnish

  B. Yardang

  C. Loess

  D. Blowout

 

 

Question 16 of 25

Which desert landscape sequence is in the proper order from young to old?

 

  A. Bajada > Alluvial Fan > Inselberg

  B. Inselberg > Bajada > Alluvial Fan

  C. Alluvial Fan > Inselberg > Bajada

  D. Alluvial Fan > Bajada > Inselberg

  E. Inselberg > Alluvial Fan > Bajada

 

 

Question 17 of 25

What is the dominant geologic agent of erosion in most deserts?

 

  A. Bajadas

  B. Water

  C. Dust storms

  D. Wind

 

Question 18 of 25

Why does desertification create even more desert in a positive feedback loop?

 

  A. Rocks absorb more solar energy than plants, increasing heat

  B. Plants help create wind patterns, and they stop when arid conditions occur

  C. Arid conditions kill plants and make soil less able to absorb moisture

  D. Drying lakes create dust which amplify and trap solar energy

  E. More open spaces absorb even more solar energy, increasing heat

 

 

 

 

 

Question 19 of 25

When a glacier “advances”, this means ________.

 

  A. It is flowing downhill towards the end of the glacier

 B. The glacier is calving into the ocean, where pieces of ice are becoming icebergs

  C. The terminus of the glacier is moving forward; the glacier is growing

  D. It is gaining snow as fast as it is losing it; the glacier is not shrinking

 

 

 

 

 

 

Question 20 of 25

What is the main cause of the glacial cycles during the Quaternary Ice Age?

 

  A. Wilson Cycles

  B. Milankovitch Cycles

  C. Tectonic Cycles

  D. Carbon Dioxide Cycles

 

 

 

Question 21 of 25

When was the peak of the last glaciation? 26,5000 to 19,000 years ago 323 to 300 million years ago 420,000 years ago ~2.5 billion years ago

 

  A. 10,000 to 12,000 years ago

  B. 26,5000 to 19,000 years ago

  C. 323 to 300 million years ago

  D. 420,000 years ago

 

 

 

Question 22 of 25

In the glacial ice budget, a zone of snow accumulation is balanced by a zone of _____.

 

 

  A. ablation

  B. exhalation

  C. sublimation

  D. abrasion

 

 

 

Question 23 of 25

How does isostasy relate to glaciation?

 

 

  A. It describes the relation between plate tectonics and ice ages over geologic time

  B. It shows the balance between snow accumulation and glacial advance

  C. It describe the balance between glacial erosion and glacial deposition

  D. Weight of ice depresses the crust; after melting, crust rebounds and rises.

 

 

 

Question 24 of 25

Glacial ice is formed by _____.

 

  A. frozen rivers

  B. recrystallized snow

  C. icebergs

  D. frost wedges

 

 

 

Question 25 of 25

A moraine is:

 

  A. Formed only when a glacier advances.

  B. A pile of well sorted, well-rounded particles.

  C. Particles transported and deposited by water.

  D. A pile of angular, poorly sorted sediment.