Conduction

• Use the key words to describe how heat is transferred.

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Hint: which state of matter is a good conductor?

What is the opposite of an conductor?

name some materials with a high thermal conductivity

Starter

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

�Thermal Conduction�

Thermal conduction is how thermal energy flows through a substance without the substance itself moving.

• Solids and metals are the best conductors, gases are the worst.
• A vacuum does not allow conduction.

A poor conductor is called an insulator.

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27-10-2021

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Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

26-10-2021

Thermal Conduction by molecules

Molecules vibrate more when they are heated.

Intermolecular forces allow the molecules to pass their vibrations from one to another.

The stronger the forces the faster the vibrations are passed.

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Conduction through metals

Metals have an additional method of conduction. They have electrons that can move from one atom to another. These electrons can pass energy through the metal very quickly.

Most of the best conductors are metals. However, diamond, a non-metal, is an excellent conductor because it has very strong intermolecular bonds.

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

27-10-2021

Practical: Finding the best conductor

• All the rods have the same length and cross-sectional area.
• They are all heated equally at one end with the bunsen burner.
• When the other end of a rod reaches a certain temperature the paraffin wax melts and the match stick falls off.
• A match stick will fall off the best conductor first.
• This should be the rod made of copper.

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

26-10-2021

The number matches to the number of groves on the metal rod so you know which metal is which.

The wax melted first in metal that is the best conductor of heat.

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Group Think

What principle is behind warm clothes vs lighter clothes?

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27-10-2021

• how do waterproof layers work

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Keeping warm with clothing

Air is a good insulator.

Clothes keep us warm by trapping air around our bodies.

The more air layers are trapped the greater is the insulating effect of the clothing.

Animals keep warm in a similar way by using fur or feathers to trap insulating layers of air around their bodies.

Purple Pen-compare and amend your answer.

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

26-10-2021

Air - a good insulator

Air trapped in feathers, cavity wall insulation, loft insulation, duvets and lagging greatly reduces heat loss by conduction.

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Think, pair and share…

• Think of three things that can make thermal energy be transferred easily.

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27-10-2021

Thermal conductivity of the material

Thickness of the material

Temperature difference across the material

• What can we do to reduce energy transferred?

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Reducing energy transferred

• The thermal conductivity of the material should be low as possible.

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• The thickness of the material should be as thick as possible.

26-10-2021

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

PLENARY

3 keywords or basic facts

2 things you understand

1 question you still have

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Which ACP/VAA did you use today and how did you use it?

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Click here to learn more about the ACPs

Click here to learn more about the VAAs

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

26-10-2021

#BeAmazingAtWIS

For the rest of this term, learning will not stop and neither will the amazing achievements of you and your peers.

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Click Here to see the latest posts and remember to add #BeAmazingAtWIS to your posts so the community can share your successes with you too.

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Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

​

Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

26-10-2021

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

​

Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

​

Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

​

Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

26-10-2021

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

​

Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

​

Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

​

Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

​

Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

26-10-2021

Type question here

PLENARY

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

BRONZE

SILVER

GOLD

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

26-10-2021

SPICE-OMETER

MILD

MEDIUM

HOT

FIERY

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

​

Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

​

Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

26-10-2021

Plenary – Which are true which are false?

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

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Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

BRONZE

SILVER

GOLD

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

​

Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

​

Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Plenary – Which are true which are false?

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

​

Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

​

Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity

Keywords: Keywords: Thermal Energy, Conduction, Solids, Particles, Vibrate

​

Describe how thermal energy transfer may take place by conduction

Practical: investigate thermal energy transfer by conduction

Explain what is thermal conductivity