Energy transfers - Katie Bruce | Laabri | Nneɛma a ɛma wotumi yɛ ade

1

Which of the following processes does NOT require a medium to transfer heat?

A) Conduction

B) Convection

C) Radiation

D) Conduction and convection

1

What kind of heat transfer occurs when you touch a hot metal spoon?

A) Conduction

B) Convection

C) Radiation

D) Evaporation

1

In which type of heat transfer does warm air rise and cooler air sink, creating a current?

A) Conduction

B) Convection

C) Radiation

D) Conduction and radiation

1

Which material would best stop the transfer of heat through conduction?

A) Metal

B) Wood

C) Copper

D) Glass

1

What type of heat transfer occurs when the Sun heats the Earth?

A) Conduction

B) Convection

C) Radiation

D) Evaporation

1

Which type of heat transfer is used by radiators to heat rooms?

A) Conduction

B) Convection

C) Radiation

D) Both B and C

1

Which of the following materials is the best conductor of heat?

A) Wood

B) Glass

C) Copper

D) Plastic

1

What happens to particles in a solid during conduction?

A) They move quickly and transfer heat by colliding with each other.

B) They remain still and absorb heat.

C) They create convection currents.

D) They emit radiation.

1

Why does metal feel colder than wood at room temperature?

A) Metal reflects heat, while wood absorbs it.

B) Metal is a conductor and wood is an insulator.

C) Metal has a higher specific heat capacity than wood.

D) Metal is smoother than wood.

1

Which of the following surfaces would emit the most thermal radiation?

A) Shiny silver

B) Dull black

C) Glossy white

D) Clear plastic

1

What type of material is usually used in wall insulation to reduce heat loss?

A) Metal

B) Glass

C) Foam

D) Ceramic

1

Why are double-glazed windows effective at insulating homes?

A) They trap air between the panes.

B) They use thicker glass.

C) They reflect all radiation.

D) They prevent any light from entering.

1

What is the primary function of loft insulation in a home?

A) To keep the house cool in the summer.

B) To reduce sound.

C) To reduce heat loss through the roof.

D) To absorb moisture.

1

What material is often used in loft insulation because it traps air and slows down heat transfer?

A) Glass wool

B) Plastic

C) Aluminum

D) Copper

1

How do curtains help to insulate a room?

A) They absorb heat from sunlight.

B) They create a barrier that traps air between the window and the room.

C) They reflect heat back into the room.

D) They reduce sound from outside.

1

Which of the following methods reduces heat loss in a home primarily through conduction?

A) Loft insulation

B) Double-glazing

C) Cavity wall insulation

D) Draught-proofing

1

Which insulating method prevents heat loss through convection?

A) Cavity wall insulation

B) Draught excluders

C) Radiator reflectors

D) Loft insulation

1

What role does air play in insulation?

A) It conducts heat quickly.

B) It prevents radiation.

C) It reduces convection and conduction.

D) It amplifies conduction.

1

What is a common advantage of insulating a home?

A) Increased heat loss

B) Reduced heating costs

C) Reduced home value

D) Increased use of heaters

1

Which type of heat loss is reduced by using reflective foil behind radiators?

A) Conduction

B) Convection

C) Radiation

D) Evaporation

1

What effect does insulating a home have on energy bills?

A) Increases them

B) Has no effect

C) Reduces them

D) Depends on the weather

1

Why are thicker walls more effective in keeping a house warm?

A) They allow more heat to enter.

B) They reduce heat transfer by conduction.

C) They increase convection.

D) They absorb more light.

1

Which appliance could be used to reduce energy costs when heating a room?

A) Electric heater

B) Portable fan

C) Programmable thermostat

D) Open fireplace

1

How does insulation reduce energy consumption?

A) By increasing the amount of energy needed

B) By preventing heat from escaping

C) By making walls thinner

D) By cooling the house

1

How can reducing draughts in a home help save energy?

A) By preventing hot air from escaping and cold air from entering.

B) By allowing cold air in to circulate heat.

C) By increasing air circulation.

D) By letting in more sunlight.

1

How can fitting carpets reduce heat loss in a house?

A) Carpets reflect heat back.

B) Carpets trap air and reduce conduction.

C) Carpets increase room temperature.

D) Carpets help ventilation.

1

Which of the following is NOT a benefit of home insulation?

A) Lower heating bills

B) Increased air leaks

C) Better temperature control

D) Reduced heat loss

1

How does cavity wall insulation reduce heat loss?

A) By increasing conduction

B) By trapping air, which reduces heat transfer

C) By removing air from the wall

D) By absorbing moisture

1

What happens to energy bills when a home is not well insulated?

A) They remain the same.

B) They increase due to more heat escaping.

C) They decrease in winter.

D) They are unaffected by insulation.

1

Which type of window covering can help reduce heat loss in winter?

A) Thin, sheer curtains

B) Thick, insulated curtains

C) Blinds with metal slats

D) No window coverings