Question
A liquid is heated in a beaker.
The density of the liquid changes as its temperature increases. This causes energy to be
transferred throughout the liquid.
How does the density change and what is this energy transfer process?
| density | energy transfer process |
A | decreases | conduction |
B | decreases | convection |
C | increases | conduction |
D | increases | convection |
Answer/Explanation
Ans: B