NCERT Book Class 7 Science (Curiosity) Chapter 3 Electricity: Circuits and their Components

Electricity:
3 Circuits and their
Components
Nihal and his classmates were excited for their school trip to the
Bhakra Nangal Dam. There they would visit the hydroelectric
power house where the force of falling water was used to generate
electricity. They also looked forward to the free 13 kilometre-
train ride from Nangal in Punjab to Bhakra in Himachal Pradesh,
along the beautiful Sutlej river and through the Shivalik hills.
Prior to the trip, Nihal and his classmates were given a group
assignment to prepare a presentation on the uses of electricity.
They began by looking around their houses, then their school,
followed by their neighbourhood, their city, and finally they
searched the internet. To their astonishment, their list kept
growing. They decided to organise the uses under different
headings.

Cooking Lighting Transportation Heating and Cooling
Electric kettle, mixer Homes, offices, Train, bus, Fan, room heater,
grinder, toaster, streets, markets, car, scooter, immersion rod, geyser,
oven, microwave, factories, lift, escalator, refrigerator, air
_______________ _______________ _______________ conditioner, _____

Entertainment Communication Others
Television, Mobile phone, Water pump,
radio, Internet, crane, computer,
_______________ _______________ _______________