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Heat Transfer Mrs. Crabtree
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Energy and Temperature
Earth’s atmosphere is comprised of a variety of gases. These gases create a “blanket” that help keep Earth warm The molecules that make up gases are evenly spread throughout the atmosphere. The faster molecules move the ______ energy they have. Conversely, the slower molecules move the _______ energy they have.
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Energy and Temperature
Thermal Energy- The _____ energy of motion of particles in a substance. Temperature- The _______ amount of energy in each molecule of a substance. One of the most important elements of weather Air temperature is measured using a ________. Thermometers work by the liquid in them expanding and contracting. As the liquid expands the temperature __________. As the liquid contracts the temperature __________.
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Temperature Scientists use the _________ scale to measure temperature.
In the Celsius scale 0 degrees = ________ and 100 degrees= _________. The US uses Fahrenheit in which 32 degrees= _________ and 212 degrees= ________
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Heat Transfer Heat moves from warmer objects to cooler object until equilibrium is reached. Transferred in three ways Conduction Convection Radiation
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Conduction The direct transfer of heat from one substance to another.
The item/material has to be touching something for conduction to work. Examples:
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Convection The transfer of heat through a fluid.
When a fluid is being heated the warm material rises because it is _______ dense and the cooler material sinks because it is _______ dense. A current is then started. Examples:
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Radiation Transfer of heat by electromagnetic radiation.
Cannot necessarily see it, but you can _________ it. Examples:
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Assignment Complete, in complete sentences, questions 1-4 on page 51.
Due the beginning of class Wednesday!!!!
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