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Chapter 9: Heat

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  • When frozen water melts and then evaporates, heat energy has caused the water molecules to
    move faster and further apart
  • How does heat energy flow?
    From a warmer object to a cooler object
  • heat coming from a light bulb
    Radiation
  • The temperature scale where water freezes at 32 and boils at 212
    Fahrenheit scale
  • When matter is heated it ____.
    Expands
  • A unit of measurement on a temperature scale
    Degree
  • Name a type of energy that can be changed into heat energy
    Mechanical, Chemical, Electrical
  • The melting point of a substance is the same as its
    freezing point
  • A device that measures temperature
    thermometer
  • Material that does not conduct heat well
    Insulator
  • To change from a gas to a liquid
    Condensation
  • Temperature at which liquid changes to a solid
    Freezing Point
  • As the temperature of an object increases the amount of heat in the object
    Increases
  • To change from a liquid to gas
    Evaporation
  • Responsible for making macaroni rise and fall in a pot
    Convection
  • A place from which heat energy comes is a
    heat source
  • The movement of heat energy from one molecule to the next is
    Conduction
  • Heat coming from the heater in your car
    Convection
  • The movement of heat energy in the form of rays are invisible waves
    Radiation
  • A measure of how fast an object's particles are moving
    termperature
  • Heat we feel from the sun
    Radiation
  • The flow of energy that occurs when a warm liquid or gas rises is
    Convection
  • My spoon is hot after leaving it in a pan
    Conduction
  • Ironing a wrinkled shirt
    Conduction
  • Point at which a solid changes to a liquid
    Melting Point
  • Temperature at which a liquid changes into a gas
    Boiling Point
  • The freezing point or boiling point of a substance can be changed by
    Mixing the substance with another substance
  • What form of energy produces the sun's heat?
    nuclear
  • Temperature scale where 0 is freezing and the boiling point is 100
    Celsius
  • A form of energy resulting from the motion of particles in matter
    heat
  • The heat you feel when you touch a hot stove
    Conduction
  • Energy flows easily through
    a Conductor
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