On: All of Earth's water in a single sphere (2019)

[aspectmin]

An interesting exercise is to do this exact same calculation with the atmosphere.

[jvm___ → aspectmin]

It's fun to scale down the Earth's depth to a 8 metre long measuring tape on the floor and then having kids guess things lik, how deep is the ocean, how deep is the deepest hole we've ever dug, how high is the atmosphere.

Adding in how far of a drive is it to X place or how far of a walk is it, is also fun.