#635 Why do some trees make rubber?
Why do some trees make rubber? It protects the trees against pests and helps them heal when they are injured. Rubber is not what comes out of the tree or…
Why do some trees make rubber? It protects the trees against pests and helps them heal when they are injured. Rubber is not what comes out of the tree or…
Why do some things bounce and other things don’t? Things that bounce have more elasticity than things that don’t bounce. For something to bounce, it has to has to have…
#433 Why does an elastic band stretch? Why does an elastic band stretch? Because it is made of long chains of polymers that would rather be tangled together than straight.…
I learned this today. Erasers work because of friction. They become sticky when they are hot and hold onto the graphite particles. Before we look at how erasers work, I…