Human Influences Flashcards

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1
Q

Suphur dioxide

A

Impurities in crude oil
Volcanos
Acid rain, damages crops, aquatic life, buildings, trees
Reduce burning ff, clean waste gases

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2
Q

Carbon monoxide

A

Incomplete combustion
Car exhausts, cigarettes, volcanos
Carboxyhaemoglobin, death
Catalytic converters

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3
Q

GH gases

A

Water vapour, CO2’ nitrous oxide, methane, CFC
FF burning, respiration, populations, cows
Global temp rises, ice caps melt, sea levels rise, extreme weather
Renewable power, reduce emissions, Ben CFC, catalytic converter

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4
Q

Ozone layer

A

Prevents dangerous rays reaching earth
Ozone is a gas present in the atmosphere
CFC cause holes

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5
Q

Acid rain

A

Sulphur oxide, nitrous oxides
Dissolve in water, form acids
Emitted by cars, fuel burning
Damages buildings, stone, trees, acidified lakes and rivers

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6
Q

GH gases

A

Essential for life on earth, without the planet would be cold
GH gases in atmosphere
Currently, enhanced effect
Too many gases

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7
Q

Global warming

A

Enhanced GH effect
Melting ice caps, rising sea levels
Loss of habitat, extreme weather

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8
Q

Greenhouse effect

A

Shortwave radiation from sun comes through atmosphere, warms ground
Earth absorbs some radiation, reflects some back into atmosphere as long wave radiation
Most radiation stopped from escaping from earth by GH gases, warming earth up more than it would normally be

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9
Q

Sources of water pollution

A

Agriculture (fertiliser, soluble in water)
Sewage
Industrial chemicals

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10
Q

Prevent pollution in U.K.

A

Treatment plants

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11
Q

Where will these methods not be used

A

Developing countries

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12
Q

Repercussions

A

Diseases spread

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13
Q

Sewage

A

Waste water from houses and industry
Urine faeces, contaminated with disease
Sewage contains nutrients for bacteria

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14
Q

Fertilisers in water

A

Very soluble in water
Hard to remove
Eutrophication

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15
Q

Eutrophication

A

Nitrate levels rise, algae grow rapidly
Algal bloom
Prevent light from penetrating into water
Submerged plants, no photosynthesis and die
Algae die
Bacteria decay dead plants, algae
Bacteria reproduce, respiration uses oxygen
Anoxic, all life dies

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16
Q

Deforestation

A

Cutting down large areas of trees

17
Q

Why is deforestation happening

A

Make space for agriculture, mining resources, transport link, houses

18
Q

Why is deforestation a problem

A

Less photosynthesis, less CO2 removed

If trees burnt, corazón is oxidised, form CO2

19
Q

Effect of deforestation

A

Less habitat, less diversity of species
Soil erosion, leaching nutrients
Disrupts water cycle