Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Do you really want to delete this prezi?
Neither you, nor the coeditors you shared it with will be able to recover it again.
Make your likes visible on Facebook?
Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.
Copy of Conduction, Convection, Radiation
Transcript of Copy of Conduction, Convection, Radiation
How does thermal energy move between matter in conduction?
Conduction: flow of thermal energy when objects are in direct contact (touching)
How is conduction useful?
All these work by conduction!
We need good CONDUCTORS.
substance through which energy (thermal, electric) passes easily
What is the handle of this skillet made of?
Materials like wood and plastic are good INSULATORS.
Substances through which energy doesn't move easily.
Insulators are very useful!
Why are these electric wires coated in plastic?
What made the paper spiral spin?
Check this cool video out!
Convection happens when a warm liquid or gas moves from one place to another.
What do liquids and gases do when they are warmed?
Warm liquids and gases rise.
Cool liquids and gases sink.
This creates a CURRENT.
Also useful for cooking food!
Heating a house.
Clouds are created by convection.
Both conduction and convection require MATTER to move energy.
Radiation is different.
When you stand near a fire, you feel warm because you are gaining thermal energy. But this energy moves from the fire to you without the use of matter. This is radiation.
There are no particles in space. How does the sun's energy reach us?
Dark materials absorb radiation.
Light materials reflect radiation.
Glass and clear materials allow radiation to pass through.
In the morning, the land absorbs heat quicker than the sea.
The air above warms up, rises and a convection current is set up.
Cooler air comes in off the sea as a ‘sea breeze’.
In the evening, the land cools down quicker than the sea.
The air above the sea is therefore warmer and it rises.
A convection current is set up as this air is replaced by cooler air from the land.
This is a ‘land breeze’.
This is a ‘land breeze’.