Would a plug still work without the earth wire?
Yes, the earth wire is for safety
When using a hairdryer, which type of transferred energy is being wasted?
Sound
Which of the two types of bulb is more efficient?
LED
When using a toaster, which type of transferred energy is being wasted?
Light
When using a TV, which type of transferred energy is being wasted?
Heat
When using something with moving parts, how do you reduce the wasted energy transferred as heat (due to the friction force).
Lubrication (grease, oil etc.)
Which type of power station transfers the energy from naturally hot rocks underground?
Geothermal power station
Which type of power station transfers gravitational potential energy from water?
Hydroelectric
