Flashcards
Light and Sound.
Cards in this deck (16)
- 1Made By:Safia Adam 8a
- 2The speed of light?300 million mps
- 3List 2 types of radiation produced from the sun.1.Radio waves
2.Uv radiation - 4What is a convex lens?A lens that curves outwards.
- 5What is refraction?the bending of light.
- 6What is Reflection?The change of direction in a wavelength that bounces off a surface.
- 7What is a concave mirror?A mirror that caves inwards.
- 8What is the 'Visible Spectrum'the band of colours caused by the splitting of white light.
- 9What unit is used to measure frequency?Hertz (Hz)
- 10What unit is used to describe the wavelengthMetres
- 11What vibrates to produce in a drum?The skin of the drum.
- 12What is acoustics?The science of sound.
- 13What is an image?An object, made by reflected light or refracted rays of light.
- 14What are flat mirrors?Plain mirrors.
- 15Why do people use concave lenses or convex for their eyes?1. Convex is used to treat long sightedness
2. Concave is used to treat short eyes sightedness - 16What is sound?All sounds are made by vibrations of molecules through which the sound travels. For instance, when a drum or a cymbal is struck, the object vibrates. These vibrations make air molecules move.
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- Flashcards on Light and Sound., created by Safia Adam on 12/09/2019.
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- Safia Adam
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