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Geography climate > Climate > Flashcards

Climate Flashcards

1
Q

Climate

A

average temp+precipitation over 30 year period +over large area

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2
Q

Glacial+Interglacial

A

glacial-cooler than average temp
interglacial-warmer than average temp

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3
Q

LIA

A

Last Ice Age
Glacial period
11,500-11,700

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4
Q

Milankovitch Cycle

A

orbital change
different parts;Eccentricity,Axial Tilt,Precession

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5
Q

Eccentricity

A

earths orbit goes from circular to elliptical affecting the seasons

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6
Q

Axial Tilt

A

whenearth spins at an angles
changes because of the gravitational pull of the earth
angle increase-more extreme climate
41,000 years

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7
Q

Precession

A

as the earth isn’t perfect it wobbles on its axis as it spins

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8
Q

Sunspots

A

dark spot son the suns surface about every 11 years
increases the intensity of the suns heat radiation making the earth warmer

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9
Q

Volcanic Eruptions

A

Global cooling
releases lots of sulphur dioxide into the earths atmosphere so the suns heat radiation can’t get in

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10
Q

Ice cores

A

Up to 2mil years
can become contaminated during analysis

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11
Q

tree rings

A

temp +precipitation of past climates
non-climate factors can affect ring(soil , fire, disease)

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12
Q

Greenhouse gases

A

gases in earths atmosphere that trap heat
Water vapour, ozone, carbon dioxide, nitrous oxide

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13
Q

greenhouse effect

A

process which heat is trapped in earths atmosphere by ghg

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14
Q

enhanced greenhouse effect

A

human activity increase the layer of ghg resulting in more heat being trapped+global temp rising

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15
Q

why is the greenhouse effect needed

A

without it no life

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16
Q

show how it works(gh effect)

A

suns radiation
earth heats up
radiation reflected by GHG
heat radiation lost in space

17
Q

enhanced green house effect

A

instead of the radiation being lost it bounces back to earth

18
Q

Effects of climate change

A

Rising sea levels
water scarcity
temp
wildfires
tropical storms
food scarcity

19
Q

Whats deserfication

A

fertile soil into desert like soil

20
Q

Tropical storms

A

more frequent +intense
destroy homes,communitys,enviroment
economic loss+deaths

21
Q

Rising sea levels

A

worse by melting ice sheets
threaten coastal+island communitys
too much co2-acidic water-coral/marine life

22
Q

water scarcity

A

even worse in some areas
ecosystems+agriculture
death

23
Q

temp

A

hotter days
heat waves
increase in heat related illness
increase death rate

24
Q

wildfires

A

temp-start easily
spread rapidly
destroys ecosystems+biodiversity

25
Q

food scarcity

A

global hunger+lack nutritions
marine sources that feed people at risk

Geography climate (5 decks)

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