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9 Cards in this Set
- Front
- Back
Short sighted |
Eyeball too long or wrong shaped lens= concave lens |
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Long sighted |
Eyeball too short or wrong shaped lens= convex lens |
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Refraction |
Refraction is bending of light and refraction occurs at the interface |
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Dispersion |
White light is split so you can see the 7 colours of the spectrum. They are all different wave lengths |
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Dispersion- continued |
Red is the longest. Violet is the shortest. Light has 3 colours red blue and green |
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Sound waves |
They are longitudinal waves which move in line with the sound |
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Ultrasound |
Scans, sonar, body parts |
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Infrasound |
Scare people, earthquake, volcano |
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Sounds |
Below 20HZ- infrasound Above 20,000HZ- ultrasound |