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WorksheetsGrade 7 Exam Review - Human Impacts on the Water Cycle
Total questions: 13
Worksheet time: 23mins
Deforestation is when humans
remove large areas of woodlands
plant large areas of woodlands
selectivly choose which trees to cut
leave all areas of the forest alone
One big reason deforestation is awful for the planet is...
less evapotranspiration, which means less rain
more evapotranspiration, which means more rain
Acid rain is...
rain that is contaminated with pollution
rain that is pure
rain that is contaminated with oxygen
rain that is contaminated with dead fish
Tailing is the...
ore we harvest to create oil and gas
chemical residue that is left over after we harvest ore
Oil spills are most dangerous to...
humans
water wildlife
forest wildlife
aerial wildlife
Hydroelectricity uses ...... to create power
water
air
wind
oil
In which ways does hydroelectricty NOT impact the environment?
It changes the temperature of the water around it
It can impact fish migration
It can have resivoirs that cover agricultural land
It can release steam that hurts birds flying overhead
What is NOT an environmental effect felt by the icecaps melting?
less arctic homes for arctic animals
more water in the ocean/higher sea level
impacts on the water cycle
Changes the amount of air in the atmosphere
Motor vehicles can create
Smog
Fog
Water
Dirt
Eutrophication does not do the following...
cut off the oxygene to the water
can create undrinkable water
create new habitat for animals
create a green film on water
The greenhouse effect...
helps plants grow
cools down the planet
warms up the planet
kills animals through reflection of sunlight
We should be concerned about the water crisis in South Africa because
it is caused by bad politics
it is caused by rapid climate change
Distillation is important because
it could allow us to use sea water for drinking water
it could allow us to make more water for the ocean
it could help us remove oil from the water
it can help split carbon and nitrogen atoms
