Energy in Day-to-Day Life - part
i
Energy is defined
as the ability to do a work or
produce a change.
We understand that energy is needed to do activities
in our day-to-day life.
Sources of energy
Examples
- Sun
- Wind
- Bio mass
- Fossil Fuel
- Flowing water
- Geo thermal power
- Nuclear power
Primary Source energy
Examples
- Sun is the main primary energy source
Secondary source energy
Examples
Electricity ➠➡➡ transformed
from flowing water
Gasoline (Petrel, diesel, kerosene) ➡➡➡ (refined from crude oil)
Utilizing of energy to do work
Please refer the text book and
try to do the following activities at home.
Materials required for them can
be found easily at home.
- Make a wind propeller.
- Solar thermal box stove
- Kudu Lipa
- Activity 4.4: using wind energy to lift a weight
Further knowledge..
Let’s learn the following clip to understand how
crude oil is extracted from the ground.
Kudulipa
Sanjaya Sir..
