Things needed :
Two paper cups
Plaster of paris
Ø Take a cup of about 3 inches height.
Ø Prepare plaster of paris in the cup.
Ø Use the butter knife to cut a narrow one inch deep groove into the plaster of paris before it dries.
Ø The grooves should not touch the edges of the container.
Ø Allow it to dry completely.
Ø Carefully tear the container away to reveal your block. Measure the size of the groove. Fill the groove with water and place the block in the freezer.
Ø After the water has frozen, remove the block and record your observation. Allow the ice to melt and place it in the freezer again. Repeat this till the block brakes.
Post a Comment