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Topic 2
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100
Hot air rises and cooler air falls. As well, basements are usually constructed out of cement and are not necessarily insulated as well as other parts of the building.
Why do basements usually feel cooler than the rest of the building?
100
Describe one way you used or will use convection today.
Cooking, Heating up food, Boiling tea or water, etc.
100
Is a house fire an accurate example of convection? Why or why not?
Yes, because the smoke rises up, and the floor remains cool.
200
How do you think convection help heat your favorite room?
If it is hotter than the air in the room, it rises until it reaches the ceiling. It travels across the ceiling, mixing with the cooler air in the room. As this air cools, it falls and travels across the floor.
200
What type of household appliance is most commonly used for cooking that involves convection?
A Convection Oven!
200
Where does the hot air go during the process of convection?
The hot air rises and goes upwards.
300
Name 2 examples of convection around the house.
Boiling water Radiator Hot Air Balloon Ice Melting Hot Tea Frozen Material Thawing
300
How is a convection oven different than a regular oven?
A convection oven cooks food faster and conserves more energy.
300
What is something that campfires and convection ovens have in common?
Smores! You can roast marshmallows at a campfire or use a convection oven to make smores :)
400
What are 2 examples of convection in nature?
Possible Answers: Mantle Convection Ocean Circulation Gravitational Convection Convection of a star Forced Convection
400
The transfer of heat by convection can only occur in...
metals (gold, copper, etc.)
400
Does convection take place in space?
Yes! Convection occurs in the Sun when vast amounts of hot gas rise up towards the surface, then they become cooler and fall towards the center of the Sun. Then the process repeats itself.
500
Fill in the blank: _____is the heat transfer that can occur only in a liquid or gas.
Convection.
500
Convection takes place in ________.
fluid materials
500
Is the air in an air balloon an example of convection? Why or why not?
Yes, because the hot and rises and is circulating.
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