Lesson Notes By Weeks and Term - Junior Secondary 1
Energy and society
Energy and society
TERM – 2ND TERM
WEEK TEN
Class: Junior Secondary School 1
Age: 12 years
Duration: 40 minutes of 5 periods each
Date:
Subject: BASIC SCIENCE
Topic: ENERGY AND SOCIETY
SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to
INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers,
demonstration, videos from source
INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,
INSTRUCTIONAL PROCEDURES
PERIOD 1-2
|
PRESENTATION |
TEACHER’S ACTIVITY |
STUDENT’S ACTIVITY |
|
STEP 1 INTRODUCTION |
The teacher explains energy for working and operating appliances |
Students pay attention |
|
STEP 2 EXPLANATION |
Teacher generated by hydroelectricity and solar generators for electric supply |
Students pay attention and participate |
|
STEP 3 DEMONSTRATION |
Teacher explains how energy is generated for drying and for photosynthesis |
Students pay attention and participate |
|
STEP 4 NOTE TAKING |
The teacher writes a summarized note on the board |
The students copy the note in their books |
NOTE
ENERGY AND SOCIETY
Energy for Working and Operating Appliances.
To power appliances and perform work, energy is required. This energy can come from various sources such as electricity, fossil fuels, renewable sources like solar or wind, or even human effort in the case of manual labor. The type of energy used often depends on the specific appliance or task at hand, as well as considerations like cost, availability, and environmental impact.
Energy from Hydroelectricity for Electric Supply
Hydroelectric power plants produce electricity by harnessing the energy of flowing water. This electricity is vital for supplying homes, businesses, hospitals, schools, and other institutions with the power needed for lighting, heating, cooling, running machinery, and conducting daily activities.
Solar Energy Generators
Solar energy generators, such as solar panels, convert sunlight into electricity, providing a clean and renewable source of power for residential, commercial, and industrial use. Solar energy can be used to supplement or entirely replace grid electricity, reducing reliance on fossil fuels and decreasing greenhouse gas emissions.
Heat Energy for Drying:
- Hydroelectricity: Hydroelectric power can indirectly contribute to heat energy for drying through electric dryers, which use electricity to generate heat for drying clothes, food, or other materials.
- Solar Energy: Solar thermal systems can directly harness sunlight to generate heat energy for drying purposes. Solar dryers, for example, use solar radiation to heat air or water, which is then used to dry agricultural products, clothes, or other items, providing a sustainable and cost-effective drying solution.
Light Energy for Photosynthesis
- Hydroelectricity: While hydroelectric power doesn't directly produce light energy for photosynthesis, it indirectly supports agricultural practices by providing electricity for artificial lighting in greenhouses or indoor farms where natural sunlight may be insufficient.
- Solar Energy: Natural sunlight, which is abundant and freely available, serves as the primary source of light energy for photosynthesis in plants. Solar energy, captured through photosynthesis, drives the growth of plants, which in turn sustain life on Earth by producing oxygen and food.
EVALUATION: 1. Discuss energy for working and operating appliances
CLASSWORK: As in evaluation
CONCLUSION: The teacher commends the students positively