GRADE 2 : BASIC SCIENCE/TECHNOLOGY : WEEK 6

NEW APPROACH

WEEK/TERM: THIRD TERM /WEEK 6

CLASS: Grade 2

DATE: 26th June, 2020

SUBJECT: Basic Science and Technology

TOPIC: Chemical Pollution

Reference: Stan Basic Science and Technology for primary 3 Google Scholar.

Brief explanation

Harmful substances released into the environment are destructive to plants, animals, humans and the environment.

Notes for the Pupils

Definition of Chemical pollution

Chemical pollution is the release of dangerous materials into the environment.

Sources of Chemical pollution

Examples of some substances that causes chemical pollution are:

1. Dust and cement.
2. Smoke or fumes from cars, generators, burning refuse and homes.
3. Oil spillage.
4. Insecticides

Ways of preventing chemical pollution

Chemical pollution can be prevented through the following ways:

1. Factories should not be sited close to residential homes. Schools, hospitals and offices.
2. Chemicals should not be used for fishing.
3. People should be educated on the danger of pollution.
4. The use of powerful chemicals to store food should be avoided.
5. Improper application of pesticide to kill mosquitoes should be avoided.

Exercises/Assignment

1. Define pollution.
2. List three sources of chemical pollution.
3. List three ways of preventing chemical pollution.