Understanding Heat and Energy Transfer

What is the process called when energy is transferred from a hotter object to a cooler one through direct contact?

• Radiation

• Conduction

• Convection

• Insulation

Which of the following is an example of energy transfer through radiation?

• A metal spoon getting hot in a cup of tea

• The Sun warming your face

• A fan blowing air

• A hot water bottle warming a bed

What is the main purpose of using insulators in thermal processes?

• To increase the temperature difference

• To prevent energy transfer

• To conduct heat efficiently

• To allow radiation

Which of the following is NOT a method of heat transfer?

• Conduction

• Radiation

• Insulation

• Convection

What happens to the temperature difference between two objects when energy is transferred from the hotter to the cooler one?

• It increases

• It decreases

• It remains the same

• It fluctuates

Which of the following processes involves energy transfer by changing motion?

• Stretching a spring

• Completing an electrical circuit

• Burning fuels

• Metabolism of food

What is the unit of temperature commonly used in Great Britain?

• Fahrenheit

• Kelvin

• Celsius

• Rankine

Which of the following is an example of energy transfer through conduction?

• A microwave heating food

• A radiator warming a room

• A pot heating on a stove

• A light bulb emitting light

What is the effect of using an insulator on a hot object?

• It increases heat loss

• It decreases heat loss

• It has no effect

• It increases heat gain

Which of the following is an example of energy transfer through completing an electrical circuit?

• A car engine running

• A light bulb lighting up

• A ball being thrown

• A person eating food