Object weight comparison block

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Object weight comparison blockBecause it's a rectangular prism, you can feel the difference in pressure when you place it in your hand!You can see that even if the volume is the sa me, different substances have different weights. Because it is a rectangular prism, you can experience the difference in pressure exerted on the palm of your hand depending on the area of ​​the base when you place it on your hand. Two types of plastic are included, polyvinyl chloride and polyethylene, and you can learn that some types of plastic float and others sink in water.20×40×50mmIron, aluminum, polyvinyl chloride, PE, wood (pine) Show more