Worksheet: Human Impact on Earth’s Systems: Acid Rain

In this worksheet, we will practice recognizing the impact human activity has in causing acid rain and identifying the ways that acid rain damages Earth’s systems.


The chart shows critical pH levels for aquatic organisms. Which two organisms are most at risk from acid rain?

  • APerch and frogs
  • BCrayfish and mayfly
  • CTrout and salamanders


Humans have released so many different chemicals into the air that they have changed the mix of gases in the atmosphere. Power plants release sulfur dioxide and nitrogen oxide when they burn fossil fuels, such as coal, to produce electricity. These pollutants cause acid rain. What name is given to this type of pollution?

  • ANoise pollution
  • BAir pollution
  • CRadioactive pollution


The pie chart shows the main causes of acid rain in the USA. Which of the following would be the best way to reduce acid rain?

  • AFinding ways to produce electricity that are less harmful to the environment.
  • BReducing harmful emissions from cars by using public transportation.
  • CIssuing fines to factories that produce large amounts of pollution.


The pH scale is used to measure how acidic or alkaline substances are.

What is the pH level of acid rain?

What is the pH level of pure water?


Acid Rain is formed when harmful chemicals in the atmosphere interact with water vapor to form clouds. According to the model shown, how do acid rain clouds travel long distances across the land and oceans?

  • AAcid rain clouds are carried by rivers.
  • BAcid rain clouds are carried by the wind.
  • CAcid rain clouds are carried by fish.


Farmers can use artificial fertilizer made from chemicals to add more nutrients to the soil.

They can also use natural fertilizer, which is called manure. What is manure made of?

Manure and vegetable garden-Cropped
  • AManure is made of animal waste (feces).
  • BManure is made of rotten or decomposing plants.

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