SUBJECT : GENERAL SCIENCE / STANDARD: 4
UNIT : CHANGES IN WEATHER
1. CHART OF ALL SEASONS
2. CHARTS OF THE EXPERIMENT
3. CHART OF A GIRL WASHING CLOTHES.
4. CHART OF A PRESSURE COOKER
AIMS AND OBJECTIVES
The student understands that weather depends on the amount of heat received by the sun.
The student knows of the time difference of the sun's effect on land and water and their variations while getting heated and its consequence.
The student derives knowledge on how the effect of the sun's heat changes water into water vapour.
The students. . .
1. Can state the reasons why changes take place in the weather (observation)
2. Can explain the role of the sun in bringing about the change in the changes in the weather.
3. Can explain the role of water in bringing about changes in the weather.
The teacher mimes how one feels when it is cold, hot or rainy.
The teacher asks questions pertaining to the seasons.
1. During which season do we shiver with cold?
2. During which season do we carry an umbrella?
3. What type of clothes do we wear in the summer season?
4. How are seasons caused?
5. Which are the two motions of the earth?
6. What is caused by the rotation of the earth?
7. Due to what reason are days and nights caused/
8. What does the sun give us?
Effect of the sun on the air surrounding the earth
During summer the days are longer and land gets heated for much longer time.
During winter the days are shorter and the sun does not heat the land much
The student understands that the weather depends on the amount of heat received by the sun
Effect of the sun's heat on water and land and its consequence.
The time taken by land and water to heat is different. Land heats quickly and cools quickly while water takes longer to heat and cools after longer time.
The student learns that the air near the land and water is different. This difference causes winds.
Effect caused by the sun on water (eg. seas oceans etc) and changing it into vapour
Water spilt in on the floor evaporates quickly.
So also the water in the wet clothes put out to dry evaporates as water vapour.
Water is evaporating continuously from the oceans, seas, lakes and wells.
The student gains knowledge that the sun's heat turns water into vapour and this water vapour mixes with the air all the time.
1. Why is it hot in summer?
2. Why is it cold in winter?
3. Which gets hotter quickly, land or water?
4. Which cools quickly, land or water?
5. What happens to the water in the wet clothes?
Geography: revolution & rotation
English: hot opposite cold
Science: The leaves prepare food with the help of
Values: Help parents in odd jobs
Write 3 sentences in your own words on: The effect of the sun on our lives.