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Exploring Heat

Exploring Heat. 4, 5, 7. How do molecules in liquids and solids behave when they are cold? How do they behave when they are hot?. Molecules in Motion. Heat can move by conduction, convection, and radiation. Heat seeks a balance and can move to achieve it.

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Exploring Heat

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  1. Exploring Heat 4, 5, 7

  2. How do molecules in liquids and solids behave when they are cold? • How do they behave when they are hot? Molecules in Motion

  3. Heat can move by conduction, convection, and radiation. Heat seeks a balance and can move to achieve it. Did the heat flow from the hot water to the cold, or from the cold to the hot? How did you know? #4 – How heat moves by conduction

  4. Which is the correct answer for the Ice Cold Lemonade Probe? a. The coldness from the ice moved into the lemonade. b. The heat from the lemonade moved into the ice. c. The coldness and the heat moved back and forth until the lemonade cooled off. Answer to the Probe

  5. The molecular structure of a substance determines how well the substance conducts energy. • Substances that do not conduct energy well are called insulators. • Substances that conduct energy well are called conductors. Conductors and Insulators

  6. Which material(s) was the best conductor? • Which material(s) was the best insulator? • Which cup will be better for hot chocolate so you don’t get burned? Results

  7. Energy does not travel from the sun as heat. • Solar energy travels in rays or waves (radiant energy) • Under sunlight, land heats faster than water. Absorption of light energy.

  8. Warm air from the land rises. • Cooler air over the water flows in to take its place. Creating wind

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