The New Way Things Work - Study Guide Part 2, Harnassing the Elements, Exploiting Heat, Nuclear Power, pp. 142-173 Summary & Analysis

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Increasing heat increases the movement of molecules. Decreasing heat will slow the molecules down. Heat travels in three ways: in the form of rays (radiation), through solids with conduction, or from one liquid or gas molecule to another by convection.

Thermal Radiation is the transfer of heat through infrared rays. When the ray contacts the surface molecules, they speed up and heat is created. Conduction occurs because molecules which begin vibrating in a solid will speed up their vibration when heated. This causes the surrounding molecules to vibrate. The spread of increased movement spreads the heat. Convection occurs as heated molecules in liquids and gasses, which are already in movement, move even further apart causing expansion.

The sun emits both infrared and light rays. How these rays...

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This section contains 1,437 words
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