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Chapter 9: Weather Factors

Learn how temperature affects weather through heat transfer, thermal energy, and measuring techniques. Discover the Celsius and Fahrenheit scales and how to convert units. Explore methods of heat transfer: radiation, conduction, and convection.

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Chapter 9: Weather Factors

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  1. Chapter 9: Weather Factors Section 2: Heat Transfer

  2. Thermal Energy and Temperature • Temperature - the average amount of energy of motion of each particle of a substance. • Measures how hot or cold • Thermal Energy – the total energy of motion in the particle of a substance.

  3. Measuring Temperature • Air temperature is usually measured with a thermometer.

  4. Measuring Temperature Continued • Temperature Scales • Temperature is measured in units called degrees • Celsius Scale • Pure Water • Freezing: 0ºC • Boiling: 100ºC • Fahrenheit Scale • Pure Water • Freezing: 32ºF • Boiling: 212ºF

  5. Converting Units • From Fahrenheit to Celsius • ºC = 5/9(ºF – 32) Suppose it is 68ºF ºC = 5/9(ºF – 32) ºC = 5/9(68 – 32) ºC = 5/9(36) ºC = 20

  6. How Heat is Transferred • Heat is the transfer of thermal energy from a hotter object to a cooler one. • Heat is transferred in three ways • Radiation • Conduction • Convection • Radiation, conduction, and convection work together to heat the troposphere.

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