Ow does the shape of ice affect its melting time –science project

My son is in 7th grade and is doing a science project on How does the shape of ice affect its melting time”. He is to have the 5 resources, an outline, and the minimum 2 page essay.

Explaining project briefly.
he will have 4 different shaped medicine bottles
each medicine bottle will have 1 oz water in them.
they will then be frozen
once frozen remove from freezer and place in a warm bowl of water, wait until the ice cracks and slide the ice from the containers. Measure the height and diameter. ( I have a chart for this). he will record how the amount of time each piece of ice takes to melt. he will repeat 3 times.