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Things you can actually interact with

$A cross-section of the Earth's interior, with a P-wave from a surface earthquake spreading down through the mantle — its flanks refracted back up toward the surface, its front crossing into the core, and a dark shadow left in the middle$ Live demo

Seismic Wave Simulator

Watch earthquakes release P-waves which bounce and bend through Earth due to discontinuities in layers.

TypeScript
Canvas
PREM

A flat map of Earth with orange wind trails curving right in the Northern Hemisphere and left in the Southern

Live demo

Coriolis on Earth

Launch winds across a spinning Earth and watch them bend right in the Northern Hemisphere, left in the Southern, and straight on the equator.

TypeScript
Canvas

A ball thrown from the centre of a spinning disk, its path curving away from the target it was aimed at

Live demo

Coriolis Simulator

You can throw a ball across a spinning disk and watch it curve. Then, if you switch into the non-spinning reference frame, you can see it now fly straight.

TypeScript
Canvas