Convection A Process of the Water Cycle. What is CONVECTION? Convection is the process by which heat...
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Transcript of Convection A Process of the Water Cycle. What is CONVECTION? Convection is the process by which heat...
ConvectionA Process of the Water Cycle
What is CONVECTION?
Convection is the process by which heat is transferred
A warmed liquid or gas comes into contact with an unheated space
Heat transfer from liquid to surrounding air
We see examples of this every day:
Seeing your breath on a cold day:
Your breath leaves the warmth of your body and touches the cool air
Moisture in your breath quickly condenses as heat transfers to the air
Boiling Water:
Water at the bottom is hottest, and warmer
water is less dense
As the cooler water sinks to the bottom, the
warmer water rises
As the warm water rises, heat transfers to the
surrounding air, cooling the water down again and
pulling it to the bottom
This causes a cycle, and that’s why boiling water
bubblesSTEAM is the product of the warm water molecules touching the
cooler air and condensing quickly
A steaming mug of cocoa
The warm liquid reaches the cool air surrounding the cup
The heat from the liquid transfers to the air
Moisture in the cup condenses into steam
What does this mean for the water cycle?
Convection happens between the steps of evaporation and condensation
It looks like this: