Energy & Society JSS1 Basic Science Lesson Note

ENERGY AND SOCIETY

Energy for Working

Energy is a key factor in national development.
For instance, electrical energy is needed to perform many daily and industrial activities.
Poor management of energy resources in a nation may cause it to remain underdeveloped.

The three main societal needs of energy are

1. Mechanical work
2. Heat supply
3. Heat removal (cooling system)

Energy from Hydroelectricity for Electric Supply

In generating hydroelectricity, the kinetic energy of falling water from the top of a dam causes the turbines to turn.
This movement drives the generators, leading to the production of electrical energy.

Uses of Solar Energy

Solar energy can be used for the following:
a. Heating
b. Drying clothes
c. Warming water
d. Drying farm products
e. Generating electrical energy

CLASSWORK 

1. What is solar energy?
2. State three (3) things you can do with solar energy.