The flash of light produced when a meteoroid passes through Earth's atmosphere is called a meteor.

Here's why:

* Meteoroid: A small piece of rock or metal in space.

* Meteor: The bright streak of light created when a meteoroid enters the Earth's atmosphere and burns up due to friction with the air.

* Meteorite: If a meteoroid is large enough to survive the fiery journey through the atmosphere and hit the ground, the resulting piece of rock is called a meteorite.

So, the flash of light you see is the meteor, the result of the meteoroid burning up.