The Heat is On

What is producing the heat that is warming up the boy?

• The heater is producing the heat that is warming up the boy.

• The window is producing the heat that is warming up the boy.

• The chair is producing the heat that is warming up the boy.

• The table is producing the heat that is warming up the boy.

Where is the energy for this appliance coming from?

• The energy for the appliance is coming from the electrical outlet.

• The energy for the appliance is coming from solar panels.

• The energy for the appliance is coming from batteries.

• The energy for the appliance is coming from wind turbines.

What is the conductor of heat in the diagram?

• The metal parts of the heater are the conductor of heat in the diagram.

• The plastic handle is the conductor of heat in the diagram.

• The air around the heater is the conductor of heat in the diagram.

• The wooden base is the conductor of heat in the diagram.

List two insulators that you can see in the diagram.

• The boy's clothes and the heater's plastic casing are insulators in the diagram.

• The boy's shoes and the metal rod are insulators in the diagram.

• The heater's wires and the boy's hair are insulators in the diagram.

• The heater's metal grill and the floor are insulators in the diagram.

Draw a red arrow on the diagram to show the movement of heat.

Which of the following objects produces heat and can be shown with a red arrow to indicate the movement of heat?

• A lit candle

• A glass of water

• A plastic toy

• A wooden table

7. The object you have drawn produces heat by:

• converting electrical energy into heat energy

• absorbing heat from the surroundings

• reflecting sunlight

• cooling down when in use

Complete the paragraph below by filling in the missing words.

• Heat is a form of energy. The molecules in warm substances are moving faster than the molecules in cooler substances. Heat energy can transfer from one object or place to another. It is measured using a thermometer. Electricity is one example of a heat source.

• Heat is a type of matter. The molecules in warm substances are moving slower than the molecules in cooler substances. Heat energy cannot transfer from one object or place to another. It is measured using a barometer. Electricity is not a heat source.

• Heat is a form of light. The molecules in warm substances are stationary compared to the molecules in cooler substances. Heat energy can only transfer through solids. It is measured using a ruler. Electricity is never a heat source.

• Heat is a kind of sound. The molecules in warm substances are moving at the same speed as the molecules in cooler substances. Heat energy can transfer only in liquids. It is measured using a scale. Electricity is always a cold source.

What is producing the heat that is warming up the boy?

• the heater

• the fan

• the window

• the table

Where is the energy for this appliance coming from?

• the electrical power socket

• the water supply

• the gas pipeline

• the solar panel