heat and temperature

• Heat


  A form of energy that can be transferred from one object to another
• Sources of heat


  • Man-made
  • Natural
• The sun


  The main source of heat
• An item gains heat


  It gets hotter and expands
• An item is ice and gains heat

  It will melt
• An item is liquid and gains heat

  It will evaporate if at the boiling point (100 degrees)
• An item loses heat

  It contracts
• An item is water vapor and loses heat


  It will condense into liquid
• An item is liquid and loses heat


  It will freeze into ice
• Good conductors of heat

  Items that allow heat to flow through them quickly
• Poor conductors of heat

  Matter that allow heat to flow through more slowly
• Water evaporation


  1. Takes place at the water surface

  2. The higher the temperature

  3. The more wind

  4. The more exposed surface area

  5. The higher the rate of evaporation
• Heat


  A form of energy that can be transferred from one object to another
• Conduction


  The transfer of heat between two objects in direct contact with each other