Heat Transfer
Presentation
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Physics
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6th - 8th Grade
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Practice Problem
•
Medium
+3
Standards-aligned
Stephen Westwood
Used 1K+ times
FREE Resource
4 Slides • 10 Questions
1
Heat Transfer
Heat flows from HOT to COLD. The bigger the temperature difference, the more heat moves.
BUT the heat needs a ride--either conduction through a solid (or unmoving fluid), convection through a moving gas or liquid, or radiation using visible or invisible light.
2
Multiple Choice
In heat transfer, heat always flows from the _______________ substance to the _______________ substance.
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4
Multiple Choice
5
Multiple Choice
6
Multiple Choice
If I want two things to stay different temperatures from each other, I need to:
7
Convection
Moving Air, or another liquid or gas can move lots of heat with it.
A fan or pump can FORCE convection
But warm air rises, so even with no fan, air will move given the chance.
Cold air sinks--thats why those open freezers at the grocery store do OK with no lid.
8
Multiple Choice
Near the ceiling of a room the air is warmer. The warm air rises because of ________.
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Multiple Choice
10
Radiation
EVERYTHING is glowing
Humans emit Infrared light
Hotter things (600 c) glow red and radiate more
900 c things glow orange, and radiate a ton.
1200 c things glow WHITE
Past that you start to get more UV light.
11
Multiple Choice
When I emit (send out) IR radiation, my body gets:
12
Multiple Choice
The heat transferred from the Sun to the Earth by waves is called ________.
13
Multiple Choice
The baby chickens kept warm by the heat lamps. This is an example of ________.
14
Multiple Choice
The heat transferred from the Sun to the Earth by waves is called ________.
Heat Transfer
Heat flows from HOT to COLD. The bigger the temperature difference, the more heat moves.
BUT the heat needs a ride--either conduction through a solid (or unmoving fluid), convection through a moving gas or liquid, or radiation using visible or invisible light.
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