Applied Science Physics (BTEC) unit 1 exam ADA questions and answers

A Wave - correct answers is something that transfers energy from one place to another without transferring any matter over that distance Longitudinal waves - correct answers A wave where the oscillations are parallel to the direction that the wave transfers energy. Examples; Sound waves, P-waves after earthquakes Transverse waves - correct answers A wave where oscillations are perpendicular to the direction that the wave transfers energy. E.g. all Electro magnetic waves on the EM spectrum. e.g gamma waves and radio waves and ultra violet waves and visible light waves and infra red waves and microwaves Displacement - correct answers The distance and direction from the equilibrium position. Amplitude - correct answers The maximum displacement (y) Wavelength - correct answers The distance between two adjacent crests ( h - alpha symbol). the waves make one complete cycle. Period - correct answers The time for one complete wave to pass a fixed point (T). Frequency - correct answers Number of cycles per second, or the number of complete waves passing a fixed point per second (F) Displacement position graph - correct answers It shows displacement of many different points on the wave at an instant in time. Displacement time graph - correct answers It shows what one particular point on the wave is doing over time. Radians - correct answers The angle subtenaed at the centre of a circle by an arc equal in length the radius. Phase difference - correct answers describes the differences between the displacements of particles along a wave, or the difference between the displacements of particles on different waves. It is most often measures in degrees or radians, with each complete cycle or wave representing 360° or 2 pi radians. phase - correct answers the distance between the first zero-crossing and the point in space defined by the origin Refraction - correct answers Is when waves change direction as they travel from one medium to another Terra (T) - correct answers 10 to the power of 12 Gigga (G) - correct answers 10 to the power of 9 Mega (M) - correct answers 10 to the power of 6 Kilo (K) - correct answers 10 to the power of 3 None - correct answers 10 to the power of 0 Centi (c) - correct answers 10 to the power of -2 milli (m) - correct answers 10 to the power of -3 Micro (um) - correct answers 10 to the power of -6 Nano (n) - correct answers 10 to the power of -9