Heat Transfer

How is heat transferred?

Classifying the methods of heat transfer

What is temperature?

• Temperature is a measure of how fast matter is moving.

• Solids have a low temperature because the matter moves slowly.

• Gases have a high temperature because the matter moves quickly.

• Scientists measure the temperature using a thermometer, and report their observations using degrees Celsius.

Multiple Choice

Heat does not have mass or volume.

Heat is ___.

• Matter

• Energy

Match

Match the state of matter to the example.

Liquid

Solid

Gas

• Liquid

• Solid

• Gas

Match

Match the state of matter to the diagram.

Gas

Solid

Liquid

• Gas

• Solid

• Liquid

Reorder

Order the states of matter from coldest (1) to hottest (3).

• Solid

• Liquid

• Gas

1

2

3

• 1
• 2
• 3

Multiple Choice

What tool is used to measure temperature?

• Thermometer

• Scale

• Meter Stick

• Stopwatch

Heat Transfer

• When two objects have different temperatures, energy will move from the hotter object to the colder object.

• The movement from energy from a hot object to a cold object is called heat transfer.

• Heat transfer will continue until the two objects have the same temperature.

Drag and Drop

When two objects have different temperatures, energy is transferred from ​

Placeholder

objects to ​

Placeholder

objects until the temperature is the same.

Drag these tiles and drop them in the correct blank above

hot

cold

Reorder

Sequence what happens when heat is transferred.

• The objects have different temperatures.

• Heat is transferred from the hot object to the cold object.

• The objects have the same temperatures.

1

2

3

• 1
• 2
• 3

Heat ALWAYS transfers from hot to cold.

Multiple Choice

You put a hot coffee cup in a cold room.

How will the heat transfer?

• From the cup to the room

• From the room to the cup

Multiple Choice

You put an ice cube into your hot chocolate.

How will the heat transfer?

• From the ice cube to the hot chocolate

• From the hot chocolate to the ice cube

Multiple Choice

You leave the window open on a cold winter day.

How will the heat transfer?

• From the classroom to outside

• From outside to the classroom

Multiple Choice

You leave the window open on a hot summer day.

How will the heat transfer?

• From the classroom to outside

• From outside to the classroom

Heat Transfer Types

• Remember that classify means to divide into groups.

• Scientists classify heat transfer to make it easier to study how heat is moving.

  • Conduction

  • Convection

  • Radiation

• This classification lets scientists predict how temperatures will change.

Multiple Choice

Classify means ____.

• Put things together

• Divide things into groups

• Introduce to a school

• Make more fancy

Multiple Choice

Why do scientists classify things?

• To make them easier to study

• To make them harder to study

• They have too much free time.

Multiple Choice

To make it easier to study Heat Transfer, scientists classify the methods into

3 categories

Those categories are:

• Producers

  Consumers

  Decomposers

• Stop

  Drop

  Roll

• Helpful

  Harmful

  Neutral

• Conduction

  Convection

  Radiation

Multiple Choice

When scientists have classified all of the heat transfer in a system, they can ___.

• Predict how temperatures will change

• Take a break

• Control how temperatures will change

Conduction

• Conduction is the transfer of energy through solids.

• The solids must be touching for heat to transfer through conduction.

• Heat will transfer from the hot object to the cold object.

Multiple Choice

The transfer of energy between solid objects.

• Radiation

• Conduction

• Convection

Multiple Choice

During conduction, heat is transferred through ___.

• Solids

• Liquids and Gases

• Waves

Multiple Choice

At the beach, your feet get burnt on the hot sand.

• Conduction
• Convection
• Radiation

Multiple Choice

You touch a warm light bulb and it burns you.

• Radiation

• Conduction

• Convection

Convection

• Convection is the transfer of energy through liquids and gases.

• The hot matter spreads out and rises.

• The cold matter packs together and sinks.

Multiple Choice

The transfer of energy in liquids and gases.

• Radiation

• Conduction

• Convection

Multiple Choice

During convection, heat is transferred through ___.

• Solids

• Liquids and Gases

• Waves

Dropdown

When there is a fire, you crawl on the ground to escape the smoke because ​

Select answer

rises and ​

Select answer

sinks.

Multiple Choice

Two fluids, one warm and one cold, mix.

The warm fluid rises and the cool fluid sinks

• Radiation

• Conduction

• Convection

Multiple Choice

Water evaporates to form a cloud, and then sinks back to Earth as rain.

• Conduction
• Convection
• Radiation

Multiple Choice

In the mantle, hot magma rises to the crust, and cold rock sinks back towards the core.

• Conduction
• Convection
• Radiation

Radiation

• Radiation is the transfer of energy through waves.

• The objects do not need to touch for radiation to happen.

• Heat will transfer from the hot object to the cold object.

Multiple Choice

The transfer of energy by waves.

• Radiation

• Conduction

• Convection

Multiple Choice

During radiation, heat is transferred through ___.

• Solids

• Liquids and Gases

• Waves

Multiple Choice

The Sun's heat reaches the Earth through the vacuum of space.

• Radiation

• Conduction

• Convection

Multiple Choice

Heat travels in waves from the lamps to the food.

• Conduction
• Convection
• Radiation

Review of Heat Transfer

• Conduction - heat transfer through solid objects

• Convection - heat transfer through liquids and gases

• Radiation - heat transfer through waves

• This classification lets scientists predict how temperatures will change.

Labelling

Place the correct types of heat transfer where they are happening.

Drag labels to their correct position on the image

Conduction

Convection

Radiation

Match

Match the heat transfer method to its description.

• Conduction

• Convection

• Radiation

Solid Objects

Liquid and Gas

Waves

• Solid Objects

• Liquid and Gas

• Waves

Match

Match the heat transfer method to its description.

Conduction

Convection

Radiation

• Conduction

• Convection

• Radiation

Open Ended

"One type of heat transfer I observe in this diagram is ___,

where ___."