In ancient China, what did Huang Xiang do to cool the bed for his father in summer?

• He used his body heat.

• He fanned the bed.

• He turned on the air conditioner.

In ancient China, how did Huang Xiang cook?

• He cooked with an oven.

• He cooked with a gas stove.

• He cooked with firewood.

Energy mainly comes from

• food

• non-renewable resource

• renewable resource

What kind of energy does a television use?

• LPG

• Petrol

• Electricity

What kind of energy does a gas stove use?

• LPG

• Petrol

• Electricity

What kind of energy does a water heater use?

• Electricity or town gas

• Petrol

• LPG

What kind of energy do we usually use to fuel a car?

• Town gas

• Electricity

• Petrol

Which appliance uses more energy?

• TV

• Fan

• Air conditioner

Town gas, LPG and petrol come from

• Coal

• Oil

• Natural gas

What should we do to save energy?

• Always open the fridge door.

• Turn on air-conditioner in winter.

• Turn off the light when you leave a room.