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Lesson 12. Pollution

The document is an annual exam revision worksheet for Stage 5 Science, focusing on the topic of pollution. It includes various questions related to sources of ocean pollution, air pollution, and the composition of gases in the atmosphere. The worksheet aims to assess students' understanding of pollution and its impact on the environment.

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17 views2 pages

Lesson 12. Pollution

The document is an annual exam revision worksheet for Stage 5 Science, focusing on the topic of pollution. It includes various questions related to sources of ocean pollution, air pollution, and the composition of gases in the atmosphere. The worksheet aims to assess students' understanding of pollution and its impact on the environment.

Uploaded by

j g
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Sanjay Ghodawat International School, Mulshi, Pune

Annual exam revision worksheet 2(2024-25)


Stage 5: Science (0097) Lesson 12: Pollution Date:

Resource: Progression and Checkpoint-all Series: 2023-2024; Progression -2025 and


Sample paper-2020

1. (a) The ocean is polluted by different sources. The table shows all the different sources of pollution
(100%).

The amount of pollution in the ocean from sewage is missing. Complete the table. Show your working. [2]
(b) Use the information in the table to put the sources of pollution in order.
Order from the largest amount of pollution to the least amount of pollution. [1]

(c) Suggest one way pollution harms the ocean environment. [1]

2. The Earth is surrounded by a layer of air.

Air in some cities contains large amounts of carbon monoxide.


Carbon monoxide is a gas not normally found in the air.
(a) Write down the name of a gas normally found in the air. [1]
(b) Complete the sentence. Carbon monoxide is a type of air pollution because it is [1]
(c) Suggest the name of something that makes carbon monoxide. [1]
3. The Earth is surrounded by a layer of air.

The list shows some of the gases that are in this layer of air.
carbon monoxide nitrogen oxygen sulfur dioxide water vapour

(a) Some of these gases are examples of pollution. What is meant by the word pollution? [2]
(b) Write down the names of two gases from the list that are examples of pollution. [2]
(c) What is the name of the layer of air that surrounds the Earth? [1]

4. Humans pollute the ocean with toxic substances.

Tiny plants absorb the toxic substances. Look at this food chain.

(a) Explain why the shark has toxic substances in its body. [1]
(b) Suggest one-way humans reduce pollution in the ocean. [1]

5. Hassan draws a bar chart to show the percentage of gases in the air.

(a) Complete the sentences. [2]


The gas with the highest percentage in the air is ………………….
This gas has a percentage of 78%.
The gas with the next highest percentage in the air is B.
This gas has a percentage of …………………………%.
The difference in percentage between these two gases is …………………………….%.
(b) Nitrogen, oxygen, carbon dioxide and water vapour are all gases at room temperature.
Write down the name of one other gas at room temperature. [1]

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