Question

Plastic ball and sitibe sink in a bucket of water. Find out which one sinks and which one floats, why? ​

Answer 1

Why does some plastic sink and others float?

Objects with tightly packed molecules are more dense than those where the molecules are spread out. Density plays a part in why some things float and some sink. Objects that are more dense than water sink and those less dense float. Hollow things often float too as air is less dense than wate

Answer 2

Plastic ball will float and stone will sink in the bucket of water.

• Objects are made up of tiny molecules. These molecules are packed together or spread out like in a bubble wrap.
• The objects in which molecules are tightly packed are dense while the objects in which molecules are spread out are light in weight.
• Plastic ball and bubble wrap together are less dense than water hence the ball floats in water.
• The molecules in stone are tightly packed together so it is more dense than water hence stone sinks in the water.