Light from a candle passes through a tiny hole and makes an upside-down picture. Move things to change its size.
Words to know
Pinhole camera
A box with a tiny hole that makes an image on a screen inside.
Image
The picture of an object formed by light.
Inverted
Upside down.
Rectilinear propagation
Light travelling in straight lines.
Quick check
Answer 3 questions to check what you learned.
Try at home
With an adult, make a pinhole camera: a box with a pinhole on one side and butter paper on the other. Point it at a bright window and see the upside-down picture.