Conduction, Convection and Radiation | Baamboozle - Baamboozle

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What role does convection play in boiling water?

Heated water rises while cooler water sinks, creating a convection current that distributes heat throughout the pot.

What happens to cold air in a hot room?

It sinks towards the ground because it is more dense

Shiny surfaces are _________ at emitting and absorbing heat compared to dull, black surfaces

worse

Which surface will emit the most infrared radiation?

black surface (matte or rough)

If a spoon is getting hot when placed in a cup of tea, what type of heat transfer is that?

conduction

What is the primary way heat from the Sun reaches the Earth?

Radiation

Why does wearing black clothes make you feel hotter on a sunny day?

Black surfaces absorb more heat from radiation, making you feel warmer

Microwave ovens transfer heat by what phenomenon?

Radiation

Why do houses in hot climates often have white or light-colored roofs?

Light colours reflect more sunlight and absorb less heat, reducing heat transfer into the house.

What type of heat transfer is it if warm air is rising and cool air is sinking in a room?

Convection

What are the three ways that radiation travels?

transmission, absorption and reflection

In conduction, warmer objects become hotter as they ______ heat energy. However, if an object is becoming cooler it is _______ heat energy

Gaining; losing

True or false, heat from a campfire reaches you mostly by convection

False (It reaches you mainly by radiation)

If an object readily transfers heat in conduction, its called what?

a conductor

If the door of an operating oven was opened, by what type of heat transfer would you feel the heat hit your face?

Convection

If three spoons (metal, wood and plastic) with butter on top were place in a pot of boiling water, which would melt first and why?

Metal, metals are good conductors. Plastic and wood are both insulators

Why do metal surfaces feel colder than wooden surfaces at the same temperature?

Metal is a better conductor of heat

In which process does heat transfer occur through direct contact of particles?

conduction

True or false, shiny surfaces are better at absorbing heat than dark surfaces

False (Dark surfaces absorb more heat)

what happens to warm air in a cold room?

It rises as the particles become less dense

Which heat transfer method does not require particles?

Radiation - travels in waves

If an object blocks or restricts the flow of heat energy it is called what?

Insulator

Give a material which would conduct heat the best

Metals

True or false, convection occurs in solids?

false