SG 4.3

Question 1

Greenhouse Gases

Answer 1

Gases in the earths atmosphere that trap heat

Question 2

Greenhouse effect

Answer 2

Energy that is not reflected back to space is absorbed as heat energy

Question 3

Humans effect on greenhouse gasses

Answer 3

deforestation (less plants to take in C02), burning fossil fuels,

Question 4

Climate Feedback Loops

Answer 4

Something that speeds up or slows down a warming trend

Question 5

Positive Feedback Loops

Answer 5

The output of the systems reinforces or amplifies the change

Question 6

Negative Feedback Loops

Answer 6

The output of the system acts to restrict the effects of the initial change.

Question 7

Patterns of C02

Question 8

Higher C02 concetration causes temperatures to

Answer 8

Rise

Question 9

What do ice cores tell us about CO2 and temperature?

Answer 9

Ice cores show past concentrations of greenhouse gases. The cores contain bubbles with a sample of the atmosphere.

Question 10

Over the past 800,000 years, Ice cores have shown us that temperatures and C02 emissions are

Answer 10

increasing

Question 11

Water Vapor

Answer 11

Positive feedback loop. Increases in carbon dioxide, cause a rise global air temps. Increased evaporation and warmer air holds more water, water vapor levels in the atmosphere rise, which increases greenhouse warming.

Question 12

methane

Answer 12

Positive feedback loop. Increased methane production can warm the Earth, which can in turn cause methane to be produced faster.

Question 13

C02

Answer 13

Positive. As CO2 increases, it increases the warming of the atmosphere.

Question 14

Clouds

Answer 14

Can be negative with dense, low level clouds. Higher temp increases the amount of cloud cover. The increased cloud thickness or amount reduces incoming solar radiation and limits warming.