Convection

1. What are the 3 types of thermal transfers?
2. Name 2 conductors and 2 insulators.
3. Describe what will happen to the readings on the thermometers.
4. Explain why using the key words: particles, vibrate, energy

Starter

Keywords: Convection, Density, Dissolve, Diffuse, Rise, Fluids

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Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

Thermal energy

Thermal energy moves from hot places to cold places by:

• CONDUCTION
• CONVECTION
• and RADIATION

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18-09-2022

Keywords: Convection, Density, Dissolve, Diffuse, Rise, Fluids

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Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

Think, pair, share Which of these statements describe a solid, which describe a liquid and which describe a gas and which describe all?

Keywords: Convection, Density, Dissolve, Diffuse, Rise, Fluids

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Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

Observing Convection

Look at what happens to the potassium permanganate in the convection tub, can you explain it?

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Keywords: Convection, Density, Dissolve, Diffuse, Rise, Fluids

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Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

Place the Statements in Order

• The water particles move faster and further apart.
• The water is now less dense, so rises.
• Cooler more dense water sinks.
• Heat is transferred to warm the water.
• The cycle is repeated as a convection current.
• As it rises it loses energy, cools down and contracts becoming more dense.

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Keywords: Convection, Density, Dissolve, Diffuse, Rise, Fluids

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Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

Place the Statements in order

1. Heat is transferred to warm the water.
2. The water particles move faster and further apart.
3. The water is now less dense, so rises.
4. As it rises it loses energy, cools down and contracts becoming more dense.
5. Cooler more dense water sinks.
6. The cycle is repeated as a convection current.

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Keywords: Convection, Density, Dissolve, Diffuse, Rise, Fluids

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Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

AfL: Which is the odd one out?

Eagle flying on thermals

Smoke rising up a chimney

Hot air balloon

Helium balloons

Keywords: Convection, Density, Dissolve, Diffuse, Rise, Fluids

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Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

True or False?

1. Convection can happen in solids.
2. Less dense fluid will rise.
3. Cool fluid is less dense than warm fluid.
4. Convection currents occur in liquid and gas (fluids).
5. Warm particles have less KE than cool particles.

18-09-2022

Finished? Correct the false statements

Keywords: Convection, Density, Dissolve, Diffuse, Rise, Fluids

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Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

True or False?

1. Convection can happen in solids.
2. Less dense fluid will rise.
3. Cool fluid is less dense than warm fluid.
4. Convection currents occur in liquid and gas (fluids).
5. Warm particles have less KE than cool particles.

18-09-2022

Finished? Correct the false statements

Keywords: Convection, Density, Dissolve, Diffuse, Rise, Fluids

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Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

18-09-2022

Task 1: Describe the cause of convection currents in the Earth’s mantle.

Keywords: Convection, Density, Dissolve, Diffuse, Rise, Fluids

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Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

18-09-2022

Task 2: Explain how the radiator heats the room. What is the radiator made from and why?

Keywords: Convection, Density, Dissolve, Diffuse, Rise, Fluids

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Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

18-09-2022

The fire causes hot air to rise up the shaft above it.

Cooler, fresher air is drawn down the other shaft..

Task 3: Explain how the fire keeps the miners safe.

Keywords: Convection, Density, Dissolve, Diffuse, Rise, Fluids

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Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

18-09-2022

Task 4: On a warm day the sun will heat the land faster than the sea.

Which way will the wind blow and why?

Keywords: Convection, Density, Dissolve, Diffuse, Rise, Fluids

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Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

18-09-2022

Keywords: Convection, Density, Dissolve, Diffuse, Rise, Fluids

​

Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

18-09-2022

Convection is a method of heat transfer that only occurs in ________ (liquids and ________).

When part of a fluid is heated the ___________ in that region move more ______ and take up more space. The heated fluid expands and becomes less _______ than the surrounding cooler fluid. The heated fluid _______ on top of the cooler fluid.

The upward path of the heated fluid is called a ____________current.

gases

fluids

molecules

convection

quickly

rises

dense

WORD SELECTION:

gases

fluids

molecules

convection

quickly

rises

dense

Plenary: Fill in the gaps

Keywords: Convection, Density, Dissolve, Diffuse, Rise, Fluids

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Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

18-09-2022

PLENARY

3 keywords or basic facts

2 things you understand

1 question you still have

Keywords: Convection, Density, Dissolve, Diffuse, Rise, Fluids

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Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

18-09-2022

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: Convection, Density, Dissolve, Diffuse, Rise, Fluids

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Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection

18-09-2022

#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: Convection, Density, Dissolve, Diffuse, Rise, Fluids

​

Describe how thermal energy transfer may take place by convection

Explain the role of convection in everyday phenomena

Describe the change in fluid density and convection