Science Year 4 Energy

SCIENCE
Year 4

Unit 7 : Energy
7.2 Renewable and non-

renewable Energy
Sources



Prepared by :
Dharshini A/P Chandran

Wave

Solar/ Sun Water

Renewable

Energy source that
can be generate
continuously

Biomass Wind

Geothermal

Solar/ Sun

Sun is constant source of
energy

Wave

Wave exist naturally

Water

Water is always available

Biomass

Biomass is always available because it
exists in natural substances

Wind

Wind is unlimited and everywhere

Geothermal

Unlimited amount of heat
generated by the Earth's core

Non-renewable

Energy sources
are limited

Nuclear

Fossil Coal
fuel
Petroleum
Natural gas

Nuclear

Fossil fuel will run out in future

Coal Natural gas Petroleum

Nuclear substance such as uranium is limited

Why we must use the
energy wisely?

Tmheoernmeeorwgreeyhw, atehvueesteo
pay

The more we use The more we use
energy, the more we energy, the more we
emit carbon to the
consume the non-
air renewable energy


resources.
( air pollution)



( depletion of energy
sources)

Ways to use energy
wisely?

Switch off

Switch off the electrical appliances and pull off the
charger after use

Go solar

Solar power reduces carbon footprint and
saves money

Use water wisely

Turn taps off after use

Close the fridge door

Never leave the fridge door open

Replace bulbs

Replace the regular bulbs with energy saving bulbs.

Thank you !