ICSE Class 8 Physics, Unit 8: Electricity
From the CISCE curriculum. 8 key concepts, about 3 days of study at 20 to 30 minutes a day.
What this unit aims at
In this theme the aim is to develop the ability to estimate consumption of electricity by knowing the power rating of appliances used. Children will also be able to appreciate and understand the need and importance of taking certain precautions and use of safety devices to protect themselves and others against electrical hazards. Previous learning stressed on electricity due to charges in motion, i.e. current electricity. However, objects can be charged, where charges are static not in motion. This is known as static electricity. This leads to many phenomena in nature, like lightning and thunder during rainy season. How an object that is charged may be detected using a simple device known as an electroscope.
Your child should be able to
- describe household consumption of electricity
- identify live wire, neutral wire and earth wire in terms of their energy and path they travel
- describe safety components (fuses, circuit breakers)
- describe phenomenon of static electricity
- explain conservation of charges
- describe conduction and induction of charges
- describe construction and working of an electroscope
- describe a lighting conductor
- identify dangers of electricity
- conduct scientific experiments keeping in mind all the parameters
Key concepts in this unit
- Household consumption of electric energy (kilowatt hour)
- Identify live wire, neutral wire and earth wire in terms of their energy and path they travel
- Safety components (fuses/circuit breakers (Qualitative approach only)/ grounding)
- Static Electricity Conservation of charges
- Conduction Induction Electroscope (Gold Leaf
- Electroscope)
- Lightning Conductor Battery as a collection of cells connected in series.
- Dangers of electricity
Teach this unit at home
- A day-by-day plan from the CISCE concepts, so you know what to cover each day.
- A step-by-step script for each day, so you know what to say and ask (AI-written from the CISCE curriculum, so check it against your child's school book).
- A quiz at the end.
From the CISCE Curriculum for Classes I to VIII (2016). CISCE sets what is taught, not the textbooks, so schools use different books and there are no page numbers here. Adhian Gurus is not affiliated with CISCE.