Heat Flashcards
1
Q
when heated what happens to the substance
When objects loose heat, what happens
A
they expand
They contract
2
Q
What is heat?
A
Heat is a form of energy.
3
Q
can heat be converted into other forms of energy?
A
Yes
3
Q
Do all solid, liquids and gases expand at the same time
A
No
4
Q
what is a bimetallic strip composed of?
A
Copper and iron, they expand that different rates
5
Q
What happens when the bimetallic strip is heated?
A
The copper expands more than iron and causes the strip to bend.
6
Q
what is heat measured in?
A
joules
7
Q
What is latent heat?
A
The heat taken in or given out when a substance is changing state without changing temperature
8
Q
An example of latent heat
A
When a gases cools to become a liquid and a liquid cools to become a solid
