definitions
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each of the black spaces below before clicking
on it to display the answer.
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| The incident ray | show 🗑
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| show | The angle of incidence and the angle of refraction are equal.
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| The incident ray | show 🗑
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| Refractive Index | show 🗑
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| Critical Angle | show 🗑
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| show | When the angle of incidence in the denser medium is greater than the critical angle, it is refracted back into the dense medium, which is known as Total Internal Reflection
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| show | A Transverse Wave is a wave where the direction of vibration is perpendicular to the direction of wave motion.
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| Longitudinal Wave | show 🗑
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| Reflection of waves | show 🗑
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| Refraction | show 🗑
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| Diffraction | show 🗑
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| show | When waves from two coherent sources meet, a new wave is produced. The amplitude at any point along this wave is the algebraic sum of the individual wave. This is known as Interference of Waves.
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| show | Stationary Waves are produced when two waves of the same frequency, wavelength and amplitude moving in opposite directions meet. They interfere with each other producing a stationary wave.
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| show | Polarisation is confining the vibrations to one plane only. Only Transverse waves can be polarised.
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| Doppler Effect | show 🗑
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| show | Frequencies which are multiples of a certain frequency are called Overtones of that frequency.
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| show | Frequencies which are multiples of the fundamental frequency are called Harmonics
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| Loudness | show 🗑
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| Pitch | show 🗑
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| show | Quality of a note depends on the number of overtones present in the note and their relative strengths
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| show | Resonance is the response of a body to a frequency equal to that of its own natural frequency.
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| Sound Intensity at a point | show 🗑
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| Frequency Limits of Audibility | show 🗑
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| show | Sound intensity at a point is the rate at which sound energy is passing per second through an area of 1 m2at right angles to the direction in which the sound is travelling.
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| show | Threshold of Hearing is the smallest sound intensity detectable by the average human ear at a frequency of 1kHz = 1x10-12Wm-2.
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| show | Fundamental Frequency of a string is when the string is vibrating with an antinode at its center and a node at each end
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| show | Grating Constant is the distance between two adjacent slits
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| Dispersion | show 🗑
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| Secondary Colour | show 🗑
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| show | Displacement is distance in a given direction
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| Speed | show 🗑
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| show | Velocity is the rate of change of displacement with respect to time.
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| Acceleration | show 🗑
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| show | A Scalar is a quantity that has magnitude only
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| show | A Vector is a quantity that has magnitude and direction.
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| Force | show 🗑
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| show | Friction is the force that tries to prevent one surface sliding over another.
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| show | A Mass of a body is a measure of how difficult it is accelerate that body.
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| show | Weight is the product of mass by acceleration due to gravity
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| show | 1 Newton is the force that gives a mass of 1kg an acceleration of 1m/s2
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| show | Newton’s 1stLawstates that every body will remain at rest or travelling with a constant velocity unless an external force acts on it.
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| show | Newton’s 2ndLawstates that when an external force acts on a body the rate of change of the body’s momentum is directly proportional to the force and takes place in the direction of the force.
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| show | Newton’s 3rdLaw states that to every action there is an equal and opposite reaction.
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| show | Terminal Velocity is where air resistance R is equal and opposite to the weight of the skydiver.
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| show | Momentum is the product of mass and velocity
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| Principle of Conservation of Momentum | show 🗑
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| Angular Velocity | show 🗑
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| show | Centripetal Force is the force needed to keep a body moving in a circle. Its direction is towards the centre of the circle.
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| Centripetal Acceleration | show 🗑
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| show | Period of Orbit is the time taken for a satellite to go once round the central body OR the time taken for one complete revolution.
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| Angular speed | show 🗑
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| Newton’s Law of Gravitation | show 🗑
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| Gravity | show 🗑
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| show | he Weight of an object is the force of the Earths gravity acting on it.
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| Density | show 🗑
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| show | Pressure is force per unit area.
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| Pascal | show 🗑
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| Archimedes’s Principle | show 🗑
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| show | Law of Flotation states that when an object floats in a fluid it experiences an upthrust which is equal to the weight of the of the displaced fluid.
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| Boyle’s Law | show 🗑
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| show | Moment of a force about an axis is equal to the magnitude of the force multiplied by the perpendicular distance from the force to the axis.
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| show | A body is in Equilibrium if the sum of the forces is zero and the sum of the moments about any point is zero.
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| Couple | show 🗑
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| Hooke’s Law | show 🗑
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| show | A body is said to moving with Simple Harmonic Motionif its acceleration is directly proportional to its distance from a fixed point on its path and its acceleration is always directed towards that point.
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| show | When a force moves a body through a displacement in the direction of the force, the Workdone is equal to the product of the force and displacement.
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| show | 1 Jouleis the work done when a force of 1 Newton acts for a distance of 1 Metre in the direction of the force.
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| show | Energy is the ability to do work.
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| show | The Principle of Conservation of Energystates that energy cannot be created or destroyed but can only be changed from one form to another.
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| show | Kinetic Energyis the energy of a body due to motion.
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| Potential Energy | show 🗑
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| Renewable Energy | show 🗑
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| Power | show 🗑
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Created by:
maximi
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