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geography > climate change > Flashcards

climate change Flashcards

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1
Q

what is an anthropocene?

A

a new unit of Earth’s history in which humans have changed earth’s characteristics

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2
Q

what are two events that are evidence for the anthropocene?

A

the columbian exchange
atomic weapons testing

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3
Q

what is the greenhouse gas emission contribution of CO2?

A

75%

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4
Q

what is the greenhouse gas emission contribution of fluorogases?

A

2%

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5
Q

what is the greenhouse gas emission contribution of methane?

A

17%

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6
Q

what is the greenhouse gas emission contribution of nitrous oxide?

A

6%

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7
Q

what is the greenhouse gas strength of CO2?

A

1

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8
Q

what is the greenhouse gas strength of fluorogases?

A

10 000

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9
Q

what is the greenhouse gas strength of methane?

A

30

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10
Q

what is the greenhouse gas strength of nitrous oxide?

A

600

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11
Q

what are the human activities that result in the emission of CO2?

A

burning fossil fuels
deforestation

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12
Q

what are the human activities that result in the emission of fluorogases?

A

aerosol cans
fridges

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13
Q

what are the human activities that result in the emission of methane?

A

agriculture
permafrost melting

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14
Q

what are the human activities that result in the emission of methane?

A

agriculture
permafrost melting

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15
Q

what are the human activities that result in the emission of nitrous oxide?

A

agriculture
burning fossil fuels

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16
Q

which countries produce the most carbon emissions and how many tonnes per year?

A

quatar- 36
uae- 23
usa- 15

17
Q

how has earth’s climate changed naturally over time?

A

the orbit shape has changed which affects the amount of solar energy we get
the tilt angle has changed

18
Q

what is the average global temperature now?

A

15°C

19
Q

what was the average global temperature 20 000 years ago?

A

8°C

20
Q

what is man made climate change called?

A

anthropogenic climate change

21
Q

how does human activity affect the earth’s climate

A

it pushes earth’s climate system beyond limits

22
Q

what are five things that are evidence for climate change?

A

drought
extreme heat
ice
oceans
storms

23
Q

what is a positive feedback loop

A

when something happens which then repeats intenser and creates a viscous cycle

24
Q

what is an example of a positive feedback loop?

A

permafrost melting

25
Q

what is a carbon footprint

A

an estimate of the full climate change impact

26
Q

what are some things that can reduce your carbon footprint

A

avoid fast fashion
travel efficiently
reduce meat and dairy intake
shop locally

27
Q

what are four main carbon footprint groups

A

power/ heating
food
transport
industry

geography (5 decks)

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