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Heat and Temperature (03:12)

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Thermodynamics is the science that studies the movement of heat. The first law of thermodynamics states that the total amount of energy in the universe always remains constant, and energy is easily transformed. The second law of thermodynamics describes the conditions under which energy transformation can take place.

Heat (02:12)

When an object is heated, its particles accelerate and its body increases in volume. Heat is the atoms’ total quantity of kinetic energy; temperature measures the average energy with which they move. Temperature can be measured using the Celsius, Fahrenheit, and Kelvin scales.

Heat and Matter (02:57)

Most bodies expand and become less dense when heated. Water expands as it cools and becomes denser when heated. Convection currents appear in liquids and gases as warmer particles rise and cooler ones fall.

Applications of Heat (03:23)

A thermal machine (combustion engine) is an apparatus that transforms heat into other forms of energy. Electrical resistance disappears as its temperature approaches absolute zero—superconductivity.

Summary (02:31)

This segment reviews the concepts of temperature and heat discussed in this video.

Credits: Temperature and Heat (Laws of Thermodynamics) (00:42)

Credits: Temperature and Heat (Laws of Thermodynamics)

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Temperature and Heat (Laws of Thermodynamics)

Part of the Series : Just the Facts Physics Facts Series
3-Year Streaming Price: $99.95

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Description

Why do objects heat up? Why do certain changes take place in our universe? Thermodynamics is the study of how heat moves. This program will explore the laws of thermodynamics, with a special emphasis on the second law of thermodynamics.

Length: 17 minutes

Item#: FMK155092

Copyright date: ©2013

Closed Captioned

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