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Videos By Chapter
from
Inquiries Into Physics



 

 

 

 

Chapter 5: Temp and Heat

  1. Temperature
  2. Thermal Expansion
  3. 1st Law of Thermo
  4. Heat Transfer
  5. Specific Heat
  6. Phase Transitions
  7. 2nd Law of Thermo

 

 

Temperature and Heat Videos

Temperature

Discussion
Streaming
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Demo Page
Liquid Nitrogen
When nitrogen gas is cool enough, it becomes a liquid. This liquid can then be used to freeze items such as flowers.

Real

Real

MPG

 

 

Thermal Expansion

Discussion
Streaming
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Bi-Metalic Strip
Different metals expand at different rates when heated. One side of the strip is one metal and the other side is another. The higher expansion rate of the longer side causes the strip to bend when heated.

Real

Real

MPG

Ring and Ball
The ball will not pass through the ring until the ring is hotter than the ball. This means the ring has expanded to allow the ball to pass through.

Real

Real

MPG

Light Bulb Thermostat, single bulb
The big light bulb heats a bi-metalic strip. When the strip bend enough, it breaks the circuit for the large bulb. When the strip cools and straightens, it turns on the large bulb again.

Real

Real

MPG

Light Bulb Thermostat, both bulbs
The big light bulb heats a bi-metalic strip. When the strip bend enough, it breaks the circuit for the large bulb and closes the circuit for the small bulb. When the strip cools and straightens, it switches off the small bulb and turns on the large bulb.

Real

Real

MPG

1st Law of Thermo

Discussion
Streaming
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Demo Page
Convection Currents
A drop of food coloring is placed in water at the top of a glass loop. When one corner is heated, a convection current is started and the food coloring will move around the ring.

Real

Real

MPG

Leslie Cube; light side
Different colored sides of the Leslie Cube radiate different amounts of heat.

Real

Real

MPG

Leslie Cube; dark side
Different colored sides of the Leslie Cube radiate different amounts of heat.

Real

Real

MPG

Heat Transfer

Discussion
Streaming
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Demo Page
Thermoelectric Fan
The temperature difference between the water and the liquid nitrogen is used to create electricity and run the fan.

Real

Real

MPG

Phase Transitions

Discussion
Streaming
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Demo Page
Drinking Duck
As the liquid evaporates from the head of the duck, the liquid in the duck heats up (towards room temp) making it rise up the duck's body. When it passes the CM point of the duck, it tips it over, getting the beak wet again. The cool water cools the liquid and the duck stands back up.

Real

Real

MPG

2nd Law of Thermo

Discussion
Streaming
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Demo Page
Steam Engine
A boiler produces steam which is used to drive a piston. The piston, in turn, drives a wheel which drives an electromagnet, producing electricity. The light bulb will light up when enough electricity is produced.

Real

Real

MPG

 

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