Year 4
Unit 7: Energy
Energy sources
Renewable
✅ A source of energy that can be generated continuously
Non-renewable
✅ Energy sources that are limited and cannot be regenerated
Water
Wind
Waves
Biomass
Sun
Food
The sun is a constant source of energy
Waves exist naturally
Water is always available
Wind is unlimited and everywhere
Biomass is always available because it exists in natural substances
provides energy to human and animal for daily activities
Nuclear Substance
Fossil Fuel
coal
natural gas
petroleum
uranium