It reaches a highest point and then falls back down.

It stops in mid-air.

It keeps going up indefinitely.

It disappears.

Because electrons are too small to observe.

Because electrons do not exist.

Because quantum mechanics governs atomic scales.

Because classical mechanics is outdated.

Neither alive nor dead

Alive

Dead

In a superposition of being both alive and dead

The electron moves in a straight line.

The electron does not exist.

The electron is in multiple positions at once.

The electron is in a fixed position.

A state where particles are destroyed.

A state where two particles are independent.

A state where particles are created.

A state where two particles are connected and affect each other instantaneously.