How many degrees of heat are necessary to change the ice into water?
One hundred and forty degrees of heat are necessary.
How many degrees of heat are in the water when the ice is all melted?
Only thirty-two degrees of heat, by the thermometer.
Does the water feel any warmer than the ice to the hand?
No; the water does not feel any warmer than the ice.
What has become of the one hundred and forty degrees of heat?
They have been hidden in the water.
What is this hidden heat called?
It is called latent heat.