Greenhouse Effect, Climate and Mitigation Practice

Use greenhouse-gas evidence to explain warming, consequences and mitigation.

SEC G3 Pure Chemistry 2027

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Which is a key environmental disadvantage of burning fossil fuels?

It increases $\ce{N2}$ concentration in air
It produces $\ce{CO2}$ which contributes to global warming
It produces oxygen which is toxic
It always produces pure water only

Which gas is a greenhouse gas produced in large amounts when fossil fuels are burned?

$\ce{N2}$
$\ce{O2}$
$\ce{CO2}$
$\ce{Ar}$

Which statement best links burning fossil fuels to climate change?

Burning fossil fuels reduces greenhouse gases
Burning fossil fuels increases atmospheric $\ce{CO2}$ which enhances the greenhouse effect
Burning fossil fuels destroys ozone directly
Burning fossil fuels produces only water

How does an increased greenhouse-gas concentration raise average global temperature?

More infrared radiation is absorbed, so less heat escapes to space
More ultraviolet radiation is produced by Earth
All sunlight is reflected to space
Oxygen is converted directly into heat

Which complete statement is correct?

Methane contributes to warming by absorbing IR; CFCs contribute to ozone depletion and increased UV exposure
Methane destroys ozone only; CFCs remove carbon dioxide
Carbon dioxide blocks UV only; ozone traps IR
Oxygen and nitrogen are the main greenhouse gases

Which is a potential effect of increased greenhouse-gas levels?

A permanent end to all extreme weather
More extreme weather events and melting polar ice
All weather immediately becomes identical everywhere
Growth of polar ice as the whole planet becomes colder

Which source pairing for greenhouse gases is correct?

Both gases are formed only when noble gases react
Methane only from complete combustion; carbon dioxide only from landfill
Carbon dioxide from fossil-fuel combustion; methane from sources such as livestock and landfill
Carbon dioxide only from photosynthesis; methane only from oxygen cylinders

Which pair consists of greenhouse gases?

Nitrogen and argon
Hydrogen and helium
Oxygen and neon
Carbon dioxide and methane

Why does a rise in greenhouse gases not predict every local climate outcome by itself?

Because any one weather event proves every future climate effect
Because cautious wording means no evidence is needed
Climate outcomes depend on interacting factors, while carbon dioxide and methane provide a supported warming contribution
Because carbon dioxide and methane have no connection to warming

Which statement about greenhouse gases is correct?

Carbon dioxide from burning fossil fuels and methane from cattle may contribute to global warming, causing more extreme weather.
Sulfur dioxide from volcanoes is the main greenhouse gas and causes ozone depletion.
Nitrogen and oxygen trap heat and cause polar ice to grow.
Methane removes carbon dioxide and cools the Earth.

Greenhouse Effect, Climate and Mitigation Practice

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