AS ocr unit 2 Definitions.
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | A spectrum produced by light passing through a gas, which has dark lines where the gas has absorbed light, characteristic of the elements in the gas.
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| show | is the maximum displacement from the centre of an oscillation
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| Diffraction | show 🗑
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| displacement | show 🗑
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| Electromagnetic spectrum | show 🗑
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| show | Atom with one or more electrons raised above their ground state positions
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| show | Energy require to raise an electron to a position above its ground state
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| show | Energy transferred to an electron when it is accelerated through a potential of 1V: equivalent to 1.6 x10-19 J
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| show | A line spectrum emitted by a hot gas which is characteristic of the elements it contains. (Coloured lines on a black background)
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| Electromagnetic wave | show 🗑
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| Energy flux/ intensity | show 🗑
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| show | Where resultant force on the oscillating body is zero
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| Frequency | show 🗑
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| Ground state | show 🗑
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| Interference | show 🗑
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| show | When an electron is completely freed from an atom leaving behind a positive ion.
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| show | Energy required to free an electron from the ground state of an atom.
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| Longitudinal waves | show 🗑
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| show | The frequency at which a free standing system oscillates after it has been displaced and then released
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| show | A point on a stationary wave where the displacement is always zero
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| Out of phase | show 🗑
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| Period | show 🗑
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| In Phase | show 🗑
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| show | between two points in an oscillation is a measure of what fraction of a complete oscillation has been completed between the two points
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| Photon | show 🗑
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| Photoelectric effect | show 🗑
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| show | Vibrations are confined to a single plane perpendicular to the direction of energy propagation
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| Principle of Superposition | show 🗑
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| Progressive waves | show 🗑
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| Quantum | show 🗑
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| Saturation | show 🗑
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| Stationary waves | show 🗑
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| show | Voltage across a photocell that is just sufficient to stop photoelectrons with the maximum amount of KE reaching the receiving electrode.
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| show | Minimum frequency that will cause photoemission from a material
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| Transverse waves | show 🗑
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| show | Rate of change of displacement
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| show | Vibrations occur in a large number of planes perpendicular to the direction to energy propagation.
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| Wavefront | show 🗑
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| Wavelength | show 🗑
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| Work function | show 🗑
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| Charge | show 🗑
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| Current | show 🗑
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| show | No charge is lost in a circuit or at any junction in a circuit.This is a consequent of Kirchoff’s first law.
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| show | Sum of the current entering a junction = sum of the currents leaving a junction
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| Drift speed | show 🗑
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| Electrical potential difference | show 🗑
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| Emf of a cell | show 🗑
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| show | Work done = Energy transfer.(This is when charge is pushed)
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| Resistance | show 🗑
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| Resistivity | show 🗑
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| Power dissipation | show 🗑
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| show | A point on a stationary wave that oscillates with the maximum amplitude
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| show | If sources of wave are coherent there must be a constant phase difference between them and therefore they must have the same frequency. They must have also approximately the same amplitude
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| Continuous spectrum | show 🗑
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| cycle | show 🗑
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| show | Electrons have a wavelength associated with them with is dependent on the momentum of the particle
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| show | Circuit e.m.f. = ΣIR.This come from Kirchoff’s second law-Around any closed loop, the sum of the e.m.f.s is equal to the sum of the p.d.s.
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| show | This is the resistance to the flow of current inside the power supply itself.
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| show | The current passes through one component , then through the next and then through the next. The current is the same at all points in the circuit. The voltage is split between the components VT = V1 +V2
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| Parallel circuits | show 🗑
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| Thermistor | show 🗑
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| Light dependent resistor | show 🗑
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| show | The current flowing through a metal is directly proportional to the potential difference across it providing the temperature remains constant.
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To hide a column, click on the column name.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Susan E Casey
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