Chapter 02 : Weather conditions in our environment

Welcome to Chapter Two. In Chapter One, you learned to conserve home and school environments. In this chapter, you will learn about weather conditions in your environment. You will learn about one element of weather, namely temperature. You will learn how to measure temperature. You will also learn how to protect yourself from hot and cold conditions.

Meaning of weather

Weather refers to the condition of the atmosphere. Weather conditions include temperature, rainfall, clouds, sunshine, humidity, and wind. These are called elements of weather.

Temperature in our environment

A weather condition can either be hot or cold. This condition is called temperature. Temperature is a measure of how hot or cold something is. When temperature increases, it becomes hot. When temperature decreases, it becomes cold.

Figure 1 Instrument for measuring temperature

It is important to understand the temperature of your area. This helps you to plan different activities. Also, it helps you to choose the right kind of clothes to wear. This depends on the particular time of the day, month or year.

The effects of hot and cold weather on animals and plants Read the following dialogue and then answer the questions in Exercise l .

Figure 2 Examples of clothes worn in cold and hot weather conditions

Exercise

1. What is the source of hot weather?

2. What happens to plants and animals during very hot conditions?

3. How do we protect ourselves from cold conditions?

14. How do we protect ourselves from hot conditions?

Study this picture and then answer the questions in Exercise 2.

Figure 3 Reading temperature

Exercise 2

1. Name the instrument shown in Figure 3.

2. What is the use of the instrument shown in Figure 3?

Activity

Get outside the classroom and stay there for 20 minutes. Then, come back to the classroom. Do you feel any change in your body temperature? Tell your classmates how you feel after coming back to the classroom. Give reasons.

Answer the following questions.

1. What is temperature?

2. What is the temperature of your home area?

3. Mention two advantages of being familiar with the temperature of the place where you live.

4. Draw the instrument we use for measuring temperature.

5. What happens to plants when it is too hot?

6. What happens to human beings when it is too cold? Write True for correct statements and False for incorrect statements.

a) Temperature is the level of coldness or hotness........

b)High or low temperature is caused by light......

c) A thermometer is an instrument for measuring air . . . . . . .

d)Rivers and dams become dry because of heat..........

Ask yourself

After completing this chapter, you can protect yourself from hot or cold conditions. What will you do when visiting cold or hot places?

Vocabulary