Heating houses

Question 1

How does heat flow.

Answer 1

Flows from a warmer to a colder body.

Question 2

What is temperature ans how is it measured.

Answer 2

Tem, is a measurement of hotness on an arbitrary scale.

Question 3

what is a thermogram and what colours does it use to indicate the temperature.

Answer 3

This uses colour to show the temperature;
hotness- white, yellow
coldest- black, dark blue, purple.

Question 4

What is specific heat capacity.

Answer 4

The energy needed to raise the tem of 1 kg by 1oc
measured in joules per kilogram degree Celsius, differs from different materials.
E transfer = mass × SHC × tem change.

Question 5

What is specific latent heat.

Answer 5

Energy needed to melt or boil 1 kg of the material.
measured in joules per kilogram and differs for different materials and each of the change of state.
(when an object is heated and it changes state, energy it transfers, but tem remains constant)