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WorksheetsHuman Impact on the atmosphere
Total questions: 20
Worksheet time: 11mins
What is meant by anthropogenic effects?
overall human activities
changes caused by human activities
acts that leads to extinction
The following graph represents the rise in global temperature and CO2 numbers. What does the ppm stand for?
parts per minute
parts per millennium
parts per million
The following graph represents the rise in global temperature and CO2 numbers. Why is it significant that they are represented on the same graph?
To show that they are exactly the same.
To show that an increase in carbon dioxide has a negative effect on the global temperature.
To show that global temperatures decreases as the carbon dioxide increases.
Which of the following actions do not contribute to the greenhouse effect?
burning fossil fuels
driving in a car
using synthetic fertilizers
the ingestion of impure water
True or false:
At this moment, the greenhouse effect of the earth is under control.
true
false
The greenhouse effect is used to explain how earth traps heat to keep the earth at a good temperature. Which part of the earth is represented by the glass in this comparison?
the atmosphere
the octosphere
the statosphere
the globalsphere
The atmosphere only traps heat and never releases it.
true
false
Complete:
In the daytime, the Sun shines through the atmosphere ____ Earth's surface. After the Sun goes down, the Earth's surface ____ .
warming up ; cools down
cooling down ; warms up
to contract the ; expands
to expand ; shrinks
Complete:
Some of the ____ is trapped by the gases in the atmosphere.
sun's rays
heat
carbon dioxide
light
Heat-trapping gases in the atmosphere are called greenhouse gases. Check all the boxes that are considered greenhouse gases.
carbon dioxide
water vapor
phosphor
methane
Due to human impacts such as the burning of fossil fuels, extra greenhouse gases can cause the atmosphere to trap more and more heat, leading to ...
a decrease in temperature
the warming of terrestrial environments
the warming of earth
the release of heat energy through the atmosphere
Ozone is a type of ___ that surrounds the planet.
gas
object
layer
Complete:
The ozone layer acts as a ___ between Earth and ultraviolet radiation.
spectrum
radiation
barrier
Complete:
___ has caused the ozone layer to thin. This exposes the earth to dangerous radiation.
animal excretion
pollution
buildings
The ozone layer is made up of a highly reactive molecule called ozone. This is represented by the formula ...
O2
O3
O
Why is the ozone layer so important?
It acts as a layer of atmosphere for the Earth
It helps keep the Earth heated
It acts as a layer of sunscreen for the Earth
Check all the boxes that are examples of human activities releasing chemicals that make the ozone layer thinner.
refrigeration
aerosols
plastic products
greenhouse gases
Chemicals that are contributing to the damaging of the ozone layer are called CFC's. What do these chemicals contain?
chlorofoam, fluorescents and carbons
chlorine, fluorine and carbon
carbon, fluorine and cerium
How does CFC's damage the ozone layer?
by breaking down the O3 (ozone) molecules
by adding too much chlorine in the air
by breaking down too many oxygen molecules
How did the ozone hole stop expanding?
more trees were planted on earth to produce more oxygen
global bans on long-lived chemicals reacting with the ozone layer
the use of plastic-use was reduced
