Pollution Sources
Name one source of gases linked to acid rain in the passage.
Power stations or cars
What kind of water do the gases dissolve in?
Rainwater.
Name one natural feature that acid rain damages
Trees, rivers, or streams.
What kind of rock does the passage name as especially affected by acid rain?
Limestone.
About how much stone wears away, according to the passage?
About one millimeter.
What two gases does the passage name?
Sulphur dioxide and nitrogen oxide.
What forms when the gases dissolve in rainwater?
Acid rain.
Name two water features the passage says acid rain can damage.
Rivers and streams.
What can acid rain do to some rocks?
It can dissolve them.
About how many years does it take for one millimeter of stone to wear away?
About twelve years.
Which human activities or places are connected to producing these gases?
Operating power stations and driving cars.
Put the process in order: acid rain forms; gases are produced; gases dissolve in rainwater.
Gases are produced, then dissolve in rainwater, and acid rain forms.
What kinds of living things may be harmed when acid rain damages trees and waterways?
Plants and organisms that depend on those environments.
What happens to carvings and statues when acid rain attacks the rock?
They erode more quickly.
What can this slow wear mean for ancient carvings over time?
They can become seriously damaged.
What broad type of country does the passage say commonly faces acid rain?
Industrialized countries.
What does the passage identify as the cause of the rain becoming acidic?
Gases dissolving in rainwater.
: What does the passage suggest about acid rain’s effects on the environment?
It can harm both land environments, such as trees, and waterways, such as rivers and streams.
Why are buildings made of soft rock especially affected?
Acid rain attacks and can dissolve the soft rock.
Based on the passage’s estimate, about how many millimeters of stone wear away in 24 years?
About two millimeters.
According to the passage, how do power stations and cars contribute to the acid-rain problem?
They produce gases that can dissolve in rainwater.
Explain how the gases from power stations and cars lead to acid rain
The gases enter the air, dissolve in rainwater, and make it acidic.
Use the passage to describe two different parts of nature that acid rain can affect.
It can damage trees and can also harm rivers and streams.
Explain how acid rain can damage an ancient stone carving over time.
It attacks the stone, causing it to wear away and erode.
Why can a small amount of stone wearing away still be a serious problem for ancient carvings?
The wear adds up over many years and can damage the carvings.