Natural Science · 6.º de Primaria · Ficha de repaso
Unit 4: We use energy wisely
What energy is, energy sources, electricity, electric circuits and saving energy.
6.º de Primaria · Natural Science · Unit 4: We use energy wisely · Ficha de repaso
Energy sources
- renewable
- never run out: solar, wind, water, biomass
- non-renewable
- run out and pollute: oil, coal, gas, nuclear
Electric circuits
- battery (generator)
- wires (conductors)
- switch
- bulb (receiver)
Current flows only when the circuit is closed.
Conductors and insulators
Metals are conductors; plastic, wood and rubber are insulators.