WorksheetsHuman Influence on the Environment
Total questions: 16
Worksheet time: 12mins
Name
Class
Date
1.
How has the atmosphere changed over the last 10,000 years?
a)
Carbon dioxide has increased
b)
Carbon dioxide has decreased
c)
Water vapour has remained at a constant level
d)
Nitrogen has increased
2.
What is shown in this diagram?
a)
How winds are formed
b)
The greenhouse effect
c)
The water cycle
d)
What the atmosphere is made of
3.
What is one cause of air pollution?
a)
litter found on the side of the road
b)
water used as a coolant by power plants
c)
burning fossil fuels
d)
Dropping litter
4.
Depletion of the ozone layer is a cause of air pollution
a)
true
b)
false
5.
Which of the following gases involved in global climate change is increasing in the atmosphere at the fastest rate?
a)
H2O
b)
Methane
c)
Chlorofluorocarbons
d)
CO2
6.
A farmer is using a crop duster to help spray chemicals on his crops to kill insects. The chemicals the farmer uses seeps into the soil and drains into the nearby river. How does this affect the animals that live in the river?
a)
They swim away
b)
They change color
c)
They get sick or die
d)
The chemicals give them more energy
7.
What is an effect of water pollution?
a)
industrial pollution
b)
disruption of food chains
c)
oil spills
d)
acid rain
8.
How does nutrient-rich agricultural runoff influence water ecosystems?
a)
increases overall productivity
b)
increases oxygen levels
c)
decreases algal productivity
d)
can result in harmful algal blooms
9.
In what ways can algal blooms be harmful?
a)
blocks out sunlight
b)
releases toxins into the water
c)
consumes oxygen when it dies
d)
All of the above
10.
Most water pollution is the result of
a)
human activities.
b)
drought.
c)
volcanic eruptions.
d)
storms.
11.
Which organism would have the greatest concentration of pollution because of biomagnification?
a)
zooplankton
b)
large fish
c)
fish-eating birds of prey
d)
small fish
12.
What is biomagnification?
a)
When a predator eats its prey
b)
The prey eats its predator
c)
The chemicals go away as the predator eats its prey
d)
A pollutant moves up the food chain and grows larger as the predator eats its prey
13.
Which human activity would be most likely to have a negative impact on the environment?
a)
Planting trees to control soil erosion
b)
Limiting the use of chemicals that kill weeds.
c)
Stopping the draining of swamps.
d)
Burning coal and oil to generate electric power.
14.
The greenhouse effect affects life on Earth by
a)
trapping oxygen
b)
cooling the temperatures
c)
trapping warmth
d)
recycling nitrogen
15.
the trend of increasing global temperatures is known as
a)
global warming
b)
ozone layer
c)
greenhouse effect
d)
acid rain
16.
Which member of the food chain is MOST affected by mercury, a fresh water pollutant?algae --> zooplankton--> small fish --> large fish --> hawk
a)
algae
b)
zooplankton
c)
large fish
d)
hawk
100 %
