Heat Transfer

​Heat transfer

Open Ended

What do you know about heat transfer?

​What is heat transfer?

Heat transfer is when a hot object transfers heat to a cold object. For example when you hold ice you hand is hot and the ice is cold. So the hand puts heat into the cold ice hence melting the ice.

There are also 3 types of heat transfer. Conduction, convection, and radiation.

Multiple Choice

Which is an example of heat transfer.

• Freezing water for a project

• A popsicle melting on a hot day

• A blanket blocking the cold.

​Conduction

Conduction it the fist one out the 3 types and also the easiest to understand. Conduction is when a hot object touches a cold object. If you have trouble remembering a great way to remember is the D in conduction means direct contact.

Multiple Choice

What is conduction?

• When a hot object touches a cold object hence transfering heat.

• When a hot object sends heat to a cold object via empty space

Multiple Choice

Which is NOT an example of conduction.

• A metal pot geting hot because of the stove.

• A hot air balloon rising because of the fire.

• An electric blanket heating up the person using it.

​Convection

Convection is when the heat from an object effects another object because of the heat flow. Hot air goes up and cold air goes down. So a hot air balloon would be convection because of the fire emiting heat and causin the balloon to rise.

Multiple Choice

What is convection?

• A hot object transfering heat because of contact with a cold object

• A hot object effecting a cold object because of heat flow.

Word Cloud

What can cause convection?

Ex: A fire

Radiation

Radition is when a hot object sends heat via elecromagnetic waves. Then the heat reaches the cold object. But radiation can be emited from thousands of miles away like the sun or a few inches away like a microwave.

Multiple Choice

What is radiation?

• When a cold object is effected by heat because of heat flow

• When a hot object sends heat to a cold object through empty space

Fill in the Blanks

Radiation is when heat travels through _____ _____ to reach a cold object.

Poll

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