because they are
balls with holes were invented in 1953 and were dubbed "Wiffle Balls."
NO. Depending on the type of they will either have a reactive core inside or a solid plastic core.
The big inflatable balls that you can climb into and roll down a hill are called Zorbs. This activity is known as zorbing, globe riding, or sphering.
It's actually the "antecubital" area or region.
Those giant inflatable balls that you can go inside are called zorbs or human hamster balls. They are typically used for fun activities like rolling down hills or across water.
No, beach balls are made out of plastic.
Most hockey balls are made of plastic with a hollow centre, or a cork centre surrounded with a plastic shell. If you ask because you hear it rattling; part of the inside has spalled (a small piece has come off the inside due to the shock of a hit, and is free to move), and should probably be replaced.
Plastic.
You get fabric or a cloth and put beans inside then sew it together!
stamen, they produce pollen to fertilize ovaries
You can buy 2 to 3 inch hollow plastic balls at www.complexplastics.com/BALLS/balls3of3.htm. Another good website is www.complast.com/balls/