Lesson 3

Acid rain

Objectives:

  1. Know that rainwater is acidic.

  2. Be able to explain the causes of acid rain.

  3. Describe the effects of acid rain.

PART A

Read this information about acid rain. There are questions to answer in part B.

PART B

Copy these questions onto paper and answer them using the information in the paragraph.

  1. Why is normal unpolluted rain acidic?

  2. What is the pH of unpolluted rain?

  3. Which acidic gases cause polluted rain?

  4. How does sulphur dioxide get into the air?

  5. How do cars contribute to acid rain problems?

  6. What does acid rain do to building stones?

  7. How are fish being killed by acid rain?

  8. How could acid rain from Britain affect Norway?

PART C

Check your answers. Scroll down this document.

acid rain answers

PART D

Watch this video about acids.

PART E

You can see the effects of acid rain on the school building. Look carefully at the colours of the building stones - particularly in the doorway. Can you spot any evidence of acid rain near where you live?

dyffryn aman

PART F

Look at the picture, then copy the paragraph underneath.

Lime on a lake

In Norway, acid rain from Britain has damaged many lakes, killing fish. One way to try to solve the problem is to spread a chemical onto the lake. This chemical is called lime (calcium oxide), it neutralises the acid in the water.

PART J

Try this quiz to finish.

End of lesson