Applied Science Physics (BTEC) unit 1 exam with 100% correct answers 2023

A Wave - Correct answer-is something that transfers energy from one place to another without transferring any matter over that distance Longitudinal waves - Correct answer-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 answer-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 answer-The distance and direction from the equilibrium position. Amplitude - Correct answer-The maximum displacement (y) Wavelength - Correct answer-The distance between two adjacent crests ( h - alpha symbol). the waves make one complete cycle. Period - Correct answer-The time for one complete wave to pass a fixed point (T). Frequency - Correct answer-Number of cycles per second, or the number of complete waves passing a fixed point per second (F) Displacement position graph - Correct answer-It shows displacement of many different points on the wave at an instant in time. Displacement time graph - Correct answer-It shows what one particular point on the wave is doing over time. Radians - Correct answer-The angle subtenaed at the centre of a circle by an arc equal in length the radius. Phase difference - Correct answer-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 answer-the distance between the first zero-crossing and the point in space defined by the origin Refraction - Correct answer-Is when waves change direction as they travel from one medium to another Terra (T) - Correct answer-10 to the power of 12 Gigga (G) - Correct answer-10 to the power of 9 Mega (M) - Correct answer-10 to the power of 6 Kilo (K) - Correct answer-10 to the power of 3 None - Correct answer-10 to the power of 0 Centi (c) - Correct answer-10 to the power of -2 milli (m) - Correct answer-10 to the power of -3 Micro (um) - Correct answer-10 to the power of -6 Nano (n) - Correct answer-10 to the power of -9 Pico (p) - Correct answer-10 to the power of -12 total internal reflection - Correct answer-occurs when the angle of refraction becomes greater than 90 degrees. optical fibre - Correct answer-is a long, thin, cylindrical core of glass, encased in a cladding of glass of a lower refractive Index. Endoscope - Correct answer-an instrument that can be introduced into the body to give a view of its internal parts. Electromagnetic waves - Correct answer-are created by the vibrations of charged objects (usually electrons). The vibration creates a wave which has both and electric and a magnetic component. FHSS (Bluetooth) - Correct answer-is a wireless technology that spreads it's signals over rapidly changing frequencies. A Satellite communication - Correct answer-is an artificial satellite that relays and amplifies radio telecommunications signals via a transporter. Intensity - Correct answer-the power passing through a surface per unit area. This means it has the units of wm-2