Overview
Things sure are heating up at Nye Labs. Snow cones, flowers, hot dogs, people -- everything is made of molecules. No matter what they're in, solid, liquid, or gas, molecules are always moving, even if just a little bit. The speed of the molecules depends on their temperature. Cold things have slow-moving molecules, while hot things have fast-moving molecules. In fact, temperature is really a measurement of molecule speed. For a cold thing to get warm, its molecules have to speed up. Heat moves in three different ways -- conduction, convection, and radiation. Conduction is the flow of heat between two solid objects that are touching. Heat conducts from your warm fingertips into a cold can of soda. Convection is the transfer of heat with a liquid or gas. A hot bath feels warm all over not just where you're sitting.
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2 - 1Magnetism February 18, 1994 -
2 - 2Wind February 25, 1994 -
2 - 3Blood & Circulation March 04, 1994 -
2 - 4Chemical Reactions March 11, 1994 -
2 - 5Static Electricity March 18, 1994 -
2 - 6Food Web March 25, 1994 -
2 - 7Light Optics September 10, 1994 -
2 - 8Bones & Muscles September 17, 1994 -
2 - 9Oceanography September 24, 1994 -
2 - 10Heat October 01, 1994 -
2 - 11Insects October 08, 1994 -
2 - 12Balance October 15, 1994 -
2 - 13The Sun October 22, 1994 -
2 - 14Brain October 29, 1994 -
2 - 15Forests November 05, 1994 -
2 - 16Communication November 12, 1994 -
2 - 17Momentum November 19, 1994 -
2 - 18Reptiles November 26, 1994 -
2 - 19Atmosphere December 03, 1994 -
2 - 20Respiration January 07, 1995