Y8 Heating and Cooling Review

Which type of heat transfer does not involve particles?

• Convection

• Conduction

• Radiation

• All of them

Wool acts as a good insulator of heat energy because it contains:

• No trapped air

• A lot of trapped air

• A lot of free air

Heat energy travels:

• From a higher temperature region to a lower temperature region

• From a lower temperature region to a higher temperature region

• Between two points at the same temperature.

Convection of heat is caused by

• Stirring a liquid

• Density changes as a warmed substance expands

• Using a fan

• The force of attraction between particles

If a thermos flask was not ‘silvered’ on the inside, it

would be able to transfer heat by:

• Conduction

• Convection

• Radiation

• All of the above

Heat is radiated more quickly from a surface which is?

• Shiny silver

• Shiny black

• Dull silver

• Dull black

A very efficient household 'radiator' would

• Be silver and have a smooth surface

• Be silver and have a rippled surface

• Be black and have a smooth surface

• Be black and have a rippled surface

Which box has a higher density?  

• Box A
• Box B
• cannot be determined
• they are the same

Tags

CCSS.HSG.MG.A.2

Which of these combines with changes in a fluid's density and the force of gravity to set convection currents in motion?

• evaporation of a fluid

• condensation of a fluid

• freezing and melting of a solid

• heating and cooling of a fluid

Tags

NGSS.MS-ESS2-6

When you touch hot sand, heat is transferred by _________ to your skin.

• conduction

• convection

• radiation