Chapter 9 - Heat Flashcards
What is heat capacity?
The heat capacity of a body is the amount of heat energy required to raise the temperature of the body by 1K
What is specific heat capacity
The specific heat capacity of a substance is the amount of heat energy required to raise the temperature of 1 KG of the substance by 1 K
What is latent heat?
The latent heat of a body is the amount of heat energy required to change its state without a change in temperature
What is specific latent heat?
The specific latent heat of a substance is the amount of heat energy required to change the state of 1 KG of the substance without a change in temperature
What is specific latent heat of fusion?
The specific latent heat of fusion of a substance is the amount of heat energy required to change 1KG of the substance from a solid to a liquid without a change in temperature
What is the specific latent heat of vaporisation?
The specific latent heat of vaporisation of a substance is the amount of heat energy required to change 1KG of the substance from a liquid to a gas without a change in temperature
What is conduction?
Conduction is the movement of heat energy through a substance by the passing on of molecular vibration from molecule to molecule. There is no overall motion of the substance.
What is convection?
Convection is the transfer of heat energy through a fluid by means of circulating currents of fluid caused by the heat
What is radiation?
Radiation is the transfer of heat energy from one place to another in the form of electromagnetic waves
What is a u-value?
The u-value of a structure is the amount of heat energy conducted per second through 1 metre squared of that structure when a temperature difference of 1 K is maintained between its ends
What is solar irradiance?
Solar irradiance is the average amount of the sun’s energy falling per second perpendicularly on 1 metre squared of the Earth’s atmosphere
