Unit 6.2 - Natural Influences

Question 1

Influences on Climate

Answer 1

surface of the earth
gases in atmosphere
global warming

Question 2

Greenhouse gases

Answer 2

gases that trap heat close he the earths surface

water vapour, co2, methane, nitrous oxide and ozone

Question 3

Greenhouse Effect

Answer 3

warming of earth caused by greenhouse gases

but without it, earths avg temp would be -18 degrees rather than 15. it would affect plant growth, survival and weather

Question 4

Deforestation

Answer 4

clearance of trees, release of carbon

Question 5

Methane

Answer 5

natural gas, formed in the break down of organic matter

Question 6

Ozone

Answer 6

shield that absorbs most of the Suns unknown uv Radiation

Question 7

Global Warming

Answer 7

Increase in average world temperature

Question 8

Evidence of Climate Change

Answer 8

glaciers

ice cores - Identified by the distinct layers in which snow fell

Question 9

Sea Level Change

Answer 9

distribution of sedimentary rocks and types of fossil fuels

• salinity
• thermal expansion/contraction

Question 10

Enhanced Greenhouse Effect

Answer 10

an increase in the natural greenhouse effect cause by human activity. the major cause of the enhanced greenhouse effect is an increase in these gases in the atmosphere

Question 11

Interglacials

Answer 11

periods between glaciations

Question 12

Salinity

Answer 12

saltiness in a water solution

3.5% in sea water

impacts sea level rise

increase salinity causes sea levels to contract and become more dense therefore reducing sea level rise

Question 13

Weather

Answer 13

describes the state of the atmosphere in terms of temperature, wind, cloud cover and precipitation

Question 14

Ice Cores

Answer 14

drilled ice
information is collected about the Earth and the atmosphere
scientists identify information through the dust, gases and other substances from the air that becomes trapped in ice