Light and sound, reflection - refraction 0.0 / 5 ? PhysicsForces and MotionIGCSEAQA Created by: cnwyamak1Created on: 24-09-15 22:33 Angle of incidence Angle between the normal and the incident ray 1 of 14 Angle of reflection The angle between the reflected ray and the normal (line drawn at the 90 degrees to the reflecting surface) 2 of 14 Concave Curving inwards rather than bulging outwards 3 of 14 Density The ratio of mass to volume. It is usually measured in grams per cubic centimetre or grams per cubic decimetre 4 of 14 Diffraction The spreading out of waves when they pass through a gap or around an obstacle 5 of 14 Longitudinal waves A wave that moves in the same direction as the direction in which the particles are vibrating 6 of 14 Prism A block of glass or other transparent material that disperses light to form a spectrum 7 of 14 Reflection There is a reflection when waves bounce off a surface 8 of 14 Refraction Process by which a waves changes in speed and sometimes direction upon entering a denser or less dense medium 9 of 14 Transverse wave A wave that moves in a direction at right angles to the way in which the particles are vibrating 10 of 14 Uniformly Evenly 11 of 14 Vacuum A volume that contains no matter 12 of 14 Wavelength The length of a single wave, measured form one wave crest to the next 13 of 14 White light Light that is a mixture of all the frequencies of visible light, so it appears white 14 of 14
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