Specific heat (capacity):

• energy to change the temperature of a unit mass by 1°C
• the amount of heat energy required to heat up as compared to water.
  • The specific heat of water is 1
  • The specific heat for ice or steam is 0.5

Sensible heat:

• the energy required to change the temperature of air without affecting its moisture content.
• Heat that causes a change in temperature in an object.
  
• Temperature change that you can sense/measure with a thermometer

Latent heat:

• energy to change the state of a unit mass (without temperature change)
  • only occurs when a change happens
  • no temperature change is measured
  • latent heat of fusion
    • when ice melts into water
    • 144 Btu's/lb of water
    • therefore when ice melts to form 1lb of water 144 Btu's were absorbed
  • Latent heat of vapourization
    • `when water turns to steam
    • 970 Btu's/lb of water
    • therefore when 1lb of water is evaporated to steam 970 Btu's were absorbed