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APES Unit 9 Review Questions and Answers correct

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APES Unit 9 Review Questions and Answers correct stratospheric ozone layer is important to the evolution of life on Earth and the continued health and survival of life on Earth Stratospheric ozone depletion is caused by anthropogenic factors, such as chlorofluorocarbons (CFCs), and natura...

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  • December 2, 2024
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APES Unit 9 Review Questions and
Answers correct
stratospheric ozone layer - answer is important to the evolution of life on Earth and
the continued health and survival of life on Earth

Stratospheric ozone depletion - answer is caused by anthropogenic factors, such as
chlorofluorocarbons (CFCs), and natural factors, such as the melting of ice crystals in
the atmosphere at the beginning of the Antarctic spring

how does a decrease in stratospheric ozone affect UV radiation on Earth? - answer it
increases the UV rays that reach the Earth's surface

health impacts of UV radiation - answer can lead to skin cancer and cataracts (eye
damage) in humans

Chlorofluorocarbons (CFCs) - answer A family of organic compounds whose
properties make them ideal for use in refrigeration, air-conditioning, and aerosols; cause
ozone depletion

How do CFCs and HCFCs destroy ozone? - answer chlorine atoms contained in the
compounds are highly reactive; they interact with Ozone (O3) by stripping off one
Oxygen molecule, leaving behind O2.

How can ozone depletion be mitigated (reduced)? - answer by replacing ozone-
depleting chemicals with substitutes that do not deplete the ozone layer such as
Hydrofluorocarbons (HCFs)

Even though HCFs do not deplete the ozone-layer, they are still an environmental
concern because they - answer have a high Global Warming Potential and are
thousands of times more powerful as a greenhouse gas than carbon dioxide

the principal greenhouse gases - answer carbon dioxide
methane
water vapor
nitrous oxide
chlorofluorocarbons

water vapor as a greenhouse gas - answer it doesn't contribute significantly to global
climate change because it has a short residence time in the atmosphere (weighs more
than gas)

, global warming potential of carbon dioxide - answer GWP of 1; is used as a
reference point for the comparison of different greenhouse gases and their impacts on
global climate change

which greenhouse gas has the highest GWP (global warming potential)? - answer
chlorofluorocarbons (CFCs) are over 10,000x as strong as CO2

how does the greenhouse effect contribute to life on Earth? - answer the greenhouse
effect results in the surface temperature necessary for life on Earth to exist but trapping
in heat which would otherwise escape in the absence of the sun

global warming potential of Methane - answer 25 times that of Carbon Dioxide

Impacts of global climate change - answer rising sea levels, melting ice sheets,
increased ocean temperatures and acidity, spreading of disease from the tropics toward
the poles, melting permafrost, increased atmospheric temperatures

ice cores - answer Carbon Dioxide data and ice cores

positive impacts of changing sea levels on marine ecosystems - answer newly
created habitats on now-flooded continental shelves

negative impacts of changing sea levels on marine ecosystems - answer deeper
communities that may no longer be in the photic zone of seawater

impact of climate change on atmospheric circulation - answer can change circulation
patterns, as temperature changes may impact Hadley cells and the jet stream

why are ocean currents important? - answer they are considered the ocean conveyor
belt and carry heat throughout the world; changing currents can have a big impact on
global climate, especially in costal regions

how can climate change affect soil? - answer changing temperatures and amount of
rainfall can impact soil's viability and potentially increase erosion

what regions on Earth experience the most impact from climate change? - answer
Earth's polar regions are showing faster response times to global climate change

why are polar regions more susceptible to climate change? - answer ice and snow in
these regions reflect the most energy back out to space, leading to a positive feedback
loop

what happens to the Earth as ice and snow melt? (the positive feedback loop) - answer
less solar energy is radiated back into space and instead is absorbed by the Earth's
surface. this in turn causes more warming of the polar regions

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