STRAND 2 NATURAL ENVIRONMENT.pptx

1. STRAND 2 NATURAL ENVIRONMENT
2.1 Weather.
Unfavorable weather conditions.
Weather of a place can be:
Windy.
Sunny.
Cloudy.
Rainy.
Sometime the weather can be dangerous.
When the weather is dangerous, it can cause harm
Weather that causes harm is said to be unfavorable weather

2. EXAMPLES OF UNFAVORABLE WEATHER
ARE:
Heavy rainfall.
Drought.
Strong wind.
Extreme heat.
Snow.
Fog

3. HEAVY RAINFALL

4. DROUGHT

5. STRONG WIND

6. EXTREME HEAT

7. SNOW

8. FOG.

9. EFFECTS OF UNFAVOURABLE WEATHER:
✓ Damage buildings.
✓ Damage crops and trees.
✓ Causes flooding.
✓ Causes death or loss of life.
✓ Causes water scarcity.

10. STRONG WIND-DAMAGE TO BUILDING.

11. HEAVY RAINS-DAMAGES TO ROADS

12. STRONG WIND- DAMAGE CROPS.

13. HEAVY RAINFALL -CAUSES FLOODING.

14. DROUGHT -CAUSES LACK OF WATER

15. UNFAVORABLE WEATHER CONDITIONS AND THEIR
SAFETY MEASURES
Unfavourable weather
conditions
Safety measures.
Heavy rainfall Shelter indoors.
Avoid walking through stagnant water and flood.
Stay indoors.
Strong winds Stay indoor in strong rooms.
Extreme heat Drink enough water.
Avoid long exposure to the sun.
Snow Dress warmly.
Fog Ensure you use light when moving.

16. 2.2 SOIL.
•The earth is covered by soil cover.
•We grow plants using the soil.
•Soil can be smooth or rough.
•Soil can be smooth or rough because of the size of the
soil particles.
•The way soil feels in our hands when we touch it is
called soil texture

17. CHARACTERISTICS OF DIFFERENT TYPES OF SOIL
There are three types of soil.
✓ Clay soil.
✓ Loam soil.
✓ Sand soil.

18. CLAY SOIL

19. LOAM SOIL

20. SAND SOIL

21. CLAY SOIL.
It is also called fine soil.
Clay soil feels smooth when touched
Characteristics of Clay soil.
∙ It has small particles.
∙ Feels smooth.
∙ It is sticky when wet.
∙ Makes long ribbon.
∙ Does not dry quickly.
∙ Cracks when it is dry.

22. SAND SOIL.
Sand soil is also called rough soil.
It feels tough when touched.
Characteristics of sand soil.
Feels coarse or rough.
It has big particles.
It does not stick when wet like clay soil.
It has loose particles.
It dries up quickly.

23. LOAM SOIL.
It is also called medium soil.
Characteristics of loan soil.
Has medium sized particles.
Has medium texture.
It feels both rough and smooth when toughed.
Makes short ribbons that break easily.
It has a lot of dead plants and animals.
It is fertile

24. HOW TO TAKE CARE OF SOIL IN THE
ENVIRONMENT.
Caring for the Soil environment
Manuring
• This is applying or adding manure

25. MULCHING
• This is covering soil with dry plant materials

26. PLANTING TREES
• Growing of trees in our environment

27. 2.3 HEAT.
Sources of Heat.
∙ We get heat from different things in the environment.
∙ The things that give us heat are called sources of heat.
∙ Heat is usually produced from things that are burning or rub.
∙ Things that burn to produce heat are called fuels.
∙ Sources of heat include:
✓ The sun.
✓ Gas.
✓ Electricity.
✓ Charcoal.
✓ Kerosene.

28. The sun. Gas cooker Electric cooker

29. Kerosene stove. Charcoal burner Traditional jiko

30. SOLAR HEATER.

31. SOURCES OF HEAT AT HOME AND FUEL USED.
Source of heat Fuel used
Solar heater Sun
Charcoal burner Charcoal
Stove Kerosene or paraffin.
Traditional jiko Firewood.
Electric cooker. Electricity.

32. USES OF HEAT IN THE ENVIRONMENT.
Heat is used to:
✓ Warming ourselves.
✓ Used for cooking.
✓ Used for ironing.
✓ Used for drying.

33. USES OF HEAT IN THE ENVIRONMENT

34. BASIC HEAT CONSERVATION MEASURES AT
HOME.
Heat conservation measures are things we do to prevent loss
of heat.
We can reduce loss of heat by:
✓ Switching off heat source after use and when not in use.
✓ Use energy saving stoves.
✓ Protecting fireplaces from winds.
✓ Use right heat source for right purpose.
✓ Use heat without wastage.

35. HOW TO KEEP SAFE WHEN USING DIFFERENT
SOURCES OF HEAT
✓ Avoid playing with fire.
✓ Avoid playing with electric appliance.
✓ Avoid prolonged exposure in the sun.
✓ Be aware of fire alarms.
✓ When in fire places be accompanied by adults.