Acid Rain Damages Lakes and Streams

Without pollution or acid rain, most lakes and streams would have a pH level near 6.5. Acid rain, however, has caused many lakes and streams in the northeast United States and certain other places to have much lower pH levels. In addition, aluminum that is released into the soil eventually ends up in lakes and streams. Unfortunately, this increase in acidity and aluminum levels can be deadly to aquatic wildlife, including phytoplankton, mayflies, rainbow trout, small mouth bass, frogs, spotted salamanders, crayfish, and other creatures that are part of the food web.

DIRECTIONS

Read each clue below. Then find the number in the puzzle that corresponds to each clue. To assist you, there is a list of possible answers to each clue below the puzzle. Now it is time to see how many clues you can get correct!

POSSIBLE ANSWERS:

ACROSS

3. A solution is ______ when it has a pH higher than 7.0.

5. When power plants burn ______, they release sulfur dioxide and nitrogen oxides into the air.

7. Wet ___________ refers to acidic rain, fog, and snow.

9. ______ deposition can be wet or dry.

11. _________ energy comes from the heat stored in the earth.

13. A ________ removes sulfur dioxide from the gases leaving the smokestack of a power plant.

DOWN

1. The government gives an __________ to a power plant, letting it release a set amount of sulfur dioxide.

2. One way that people can help prevent acid rain is by joining a ________, in which individuals share rides to their destination and reduce the number of cars polluting the air.

4. By turning off the lights when you leave a room, you are practicing energy ________.

6. An ________ consists of plants and animals and the environment in which they live.

8. Acid rain dissolves and washes away important ________ found in the soil that are necessary for the healthy growth of plants.

10. Hydroelectricity is produced from the energy of running _______.

12. Solar energy is energy that comes from the ___.

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