Heating Houses Flashcards
What happens when an object has a very high temperature compared to its surroundings?
It cools very quickly and slows down when it gets close to room temperature.
What is the difference between temperature and heat?
Temperature is how hot something is, measured in degrees Celsius, heat is a form of energy measured in joules (J)
What happens when there is a difference between the temperature of an object and it’s surrounding?
The heat energy flows from the hot area (CALLED SOURCE) to the cool area (CALLED SINK), so the hot area cools down and the cold area heats up.
The molecules in solid materials all vibrate, so they have kinetic energy. How does the temperature of an object effect this?
The higher the temperature of an object, the more the molecules vibrate, meaning the average kinetic energy of the molecules is higher.
What is specific heat capacity?
The amount of energy needed to raise the temperature of 1 kilogram of material by 1 degree Celsius.
What does the amount of energy needed to raise the temperature of an object depend on?
- The mass of the object
- The change in temperature required
- The specific heat capacity of the material
Why does the temperature of something not change when it is changing states?
The heat energy supplied is being used to break intermolecular bonds instead of to raise the temperature in order to change the state of the material.
What is specific latent heat and what can it depend upon?
The amount of heat energy needed to melt or boil a material.
Can depend upon the material and the state (solid, liquid or gas).
Where is heat in a house likely to escape from?
Windows, doors and the roof
