Lesson Notes By Weeks and Term v4 - JHS 1
ELECTRICITY AND ELECTRONICS
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ELECTRICITY AND ELECTRONICS
Download the Lessonotes Mobile Ghana app for faster lesson access on Android and iPhone.
Subject: Science
Class: JHS 1
Term: 2nd Term
Week: 9
Grade code: B7.4.2.1.2
Strand code: 4
Sub-strand code: 2
Content standard code: B7.4.2.1
Indicator code: B7.4.2.1.2
Theme: FORCES AND ENERGY
Subtheme: ELECTRICITY AND ELECTRONICS
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Electricity makes life easier in Ghana: it powers lights for night learning, fridges for storing food and medicines, machines in factories, and phone charging for communication. However, the way electricity is generated can also affect our environment and health. Some power plants release smoke and gases that cause air pollution and climate change; others produce dangerous waste that must be managed safely for many years. Understanding these impacts helps learners make informed choices, participate in community discussions, and support safer, cleaner energy solutions.
2.1 What is electricity generation? Electricity generation is the process of producing electrical energy from other forms of energy (heat, moving water, wind, sunlight, etc.) using machines like turbines and generators.
Many power stations work like this: A source of energy produces heat or motion. Heat makes steam or motion turns a turbine. The turbine spins a generator. The generator produces electricity which is sent through transmission lines.
This lesson focuses on thermal and nuclear generation.
2.2 Thermal electricity generation (fossil-fuel power) Thermal power generation produces electricity by burning fuels such as crude oil, natural gas, coal, or diesel to produce heat.