Is the hand sensible of the heat coming from the iron?
The hand is sensible of the heat.
What then may this heat be called?
It may be called sensible heat, because it can be felt.
How do we measure heat?
We measure heat by degrees.
How many degrees of heat in ice when at the melting point?
Thirty-two degrees of heat, as measured by the thermometer.
How can we change ice into water?
By applying heat to the ice it will be changed into water.