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9 Cards in this Set

  • Front
  • Back

Short sighted

Eyeball too long or wrong shaped lens= concave lens

Long sighted

Eyeball too short or wrong shaped lens= convex lens

Refraction

Refraction is bending of light and refraction occurs at the interface

Dispersion

White light is split so you can see the 7 colours of the spectrum. They are all different wave lengths

Dispersion- continued

Red is the longest. Violet is the shortest. Light has 3 colours red blue and green

Sound waves

They are longitudinal waves which move in line with the sound

Ultrasound

Scans, sonar, body parts

Infrasound

Scare people, earthquake, volcano

Sounds

Below 20HZ- infrasound


Above 20,000HZ- ultrasound