Quiz 5

Question 1

A really cold winter is proof that global warming is a hoax?

Answer 1

False

Question 2

A release of methane hydrates or clathrates (same thing) would lower global temperatures by reflecting incoming sunlight?

Answer 2

False

Question 3

Carbon dioxide in the atmosphere has increased by about how much in the past century?

Answer 3

100ppm

Question 4

Carbon dioxide in the atmosphere is at an all-time hight?

Answer 4

False

Question 5

During the last 800,000 years, northern hemisphere glaciations have occurred about how often?

Answer 5

100,000 years

Question 6

Earth gets more total sunlight when eccentricity is high?

Answer 6

True

Question 7

Faster plate spreading rates at mid-ocean ridges are likely cause of higher sea levels in the past?

Answer 7

True

Question 8

For the same slope, would shear stress be greater on the Earth or Moon?

Answer 8

Earth

Question 9

From which direction does the wind in MN usually come?

Answer 9

West

Question 10

Ice ages are common throughout Earth’s history?

Answer 10

False

Question 11

Mass wasting is an important process on rocky (sediment poor) shorelines?

Answer 11

True

Question 12

Mean annual temperatures in the northern hemisphere has increased by about how much in the last century?

Answer 12

0.5C

Question 13

Milankovitch hypothesized that ice ages developed when winters are coldest?

Answer 13

False

Question 14

Once can discern the direction of longshore drift by examining the amount of sane on the two sides of a jetty or groin?

Answer 14

True

Question 15

Output of the Sun is effectively constant?

Answer 15

False

Question 16

Over the last 500Ma, sea-level is thought to have varied by roughly how much?

Answer 16

500m

Question 17

Rocky beaches are more common on uplifted coastlines?

Answer 17

True

Question 18

The greenhouse effect works by atmospheric absorption of visible light from the sun?

Answer 18

False

Question 19

The little ice age, a period of cold temps in N America and Europe, occurred about how long ago?

Answer 19

400 years ago

Question 20

The superstorm in TDAT are high or low pressure cells

Answer 20

High pressure cells

Question 21

The Younger Dryas, a period of cold climate that followed deglaciation in the N. hemisphere occurred about _____ years ago?

Answer 21

10,000 years ago

Question 22

Water vapor is the primary greenhouse gas?

Answer 22

True

Question 23

We live in the hottest period of Earth’s history?

Answer 23

False

Question 24

When the volume of ice in ice caps increases, the ration of oxygen 18 to oxygen 16 in the ocean increases?

Answer 24

True

Question 25

When was the last snowball Earth thought to have occurred?

Answer 25

500 Ma

Question 26

Which of the following has little or no effect on global temperature?

Answer 26

``` none of the above volcanoes output of the sun ocean circulation orbital variations ```