the measurement of the degree of hotness or coldness of an object.

Heat is measured in Celsius (℃) and Kelvin (K) unit.

take place in solid, heat is transferred through the vibrating particles that are in contact.

takes place in fluid and gas, heat is transferred by the moving of convection current.

take place is vacuum, heat flows in the form of electromagnetic waves

Example of substance that allows heat to flow through it easily.

Example of substance that prevents or slow down the rate of heat through it.

What is a conductor?

What is an insulator?

Which of these is a better conductor?

frying bacon in a pan

sun shining through a window

boiling water in a pot

Which of the following is an example of heat transfer by Conduction?

Which of the following is an example of heat transfer by Convection?

during the night, the _________cools down faster than the _________

________________ has small gaps to let them expand in hot day.

In the fire alarm, the bimetallic strip __________ when heated.

dark colour ___________ heat and light colour ___________ heat.

vacuum is a __________ heat conductor.

____________ colour can release释放 heat faster.

In __________, heat transfer传送 through通过 fluid.