A torch is switched on. What is the correct energy change?

Chemical to electrical to light (and some heat)

Which statement describes the principle of conservation of energy?

Energy cannot be created or destroyed, only changed from one form to another

Because space is almost empty, so there are no particles for conduction or convection

Electrical to kinetic (with some heat and sound wasted)

They make little or no electricity at night or on cloudy days

Switch off appliances when they are not being used

Gravitational potential energy to kinetic energy

15questions. Pick an answer and you'll see why right away.

What form of energy is stored in a battery?
A torch is switched on. What is the correct energy change?
Which statement describes the principle of conservation of energy?
A metal spoon left in hot soup becomes hot at the handle. By which method does the heat travel up the spoon?
How does warm air spread around a room heated by a floor heater?
Why is radiation the only way heat can reach the Earth from the Sun?
Which material would keep a saucepan handle coolest?
Useful energy change in an electric fan is best described as which of these?
A 2 kW heater is used for 3 hours. How much energy does it use?
Electricity costs 25 cents per kWh. What does it cost to use 4 kWh?
Which of these is a renewable energy resource?
Which of these is a non-renewable energy resource?
What is one disadvantage of solar panels?
Which is a simple way to save energy at home?
A ball is held high then dropped. What energy change happens as it falls?