Science Quiz / AS Physics Definitions

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Can you name the Physics Definitions

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A component that changes its resistance with changes in the light intensity. (dark = high resistance, light = low resistance)
The displacement per unit time.
The sum of the currents entering any junction is always equal to the sum of the currents leaving the junction.
The principle that states that when two or more waves of the same type exist at the same place the resultant wave will be found by adding the displacements of each individual wave.
Physical law stating charge is conserved in all interactions; it cannot be created or destroyed.
A model used to describe the movement of charge in a circuit, from positive to negative.
The rate of doing work.
Physical law stating that energy cannot be created or destroyed, just transformed from one form into another or transferred from one place to another.
When there is 0 resultant force acting on an object.
The distance travelled in a particular direction.
The work an object can do by virtue of its speed.
A flow of charge.
The electrical energy transferred per unit charge when one form of energy is converted into electrical energy.
A wave that travels from one place to another.
The time taken for one complete pattern of oscillation.
A physical law describing the change in intensity of a transverse wave passing through a Polaroid analyser.
The distance travelled from seeing the need to stop to applying the brakes.
The rate of change of velocity.
Current x time
The energy stored in a stretched or compressed object (for example a spring).
The maximum displacement of a wave from its mean or rest position.
The object will not return to its original shape when the deforming force is removed, it becomes permanently distorted.
The addition of two or more waves (superposition) that results in a new wave pattern.
Unit of energy. 1 _ is the work done when a force of 1N moves its point of application 1m in the direction of the force.
A spectrum of dark lines across the pattern of spectral colours produced when light passes through a gas and the gas absorbs certain frequencies depending on the elements in the ga
Two waves with a constant phase relationship.
The velocity at which an object's drag equals its accelerating force. Therefore there is no resultant force and zero acceleration.
The extension per unit length.
The product of the force and the distance moved in the direction of the force, it can also be considered as the energy converted from one form into another.
The force due to a gravitational field acting on an object's mass.
The turning effect due to a couple.
The point at which the entire weight of an object can be considered to act.
A point that always has zero amplitude along a stationary wave cause by destructive interference.
Unit of electric charge.
The theory that states all objects can exhibit both wave and particle properties.
Two forces that are equal and opposite to each other but not in the same straight line.
When waves change direction when they travel from one medium to another due to a difference in the wave speed in each medium.
A wave where the oscillations are parallel to the direction of wave propagation.
A point of maximum amplitude along a stationary wave caused by constructive interference.
The distance a vehicle travels while decelerating to a stop.
1 _ is the force which gives a mass of 1kg an acceleration of 1m/s2
The sum of the thinking distance and the braking distance.
The minimum energy required to release an electron from a material.
A wave where the oscillations are perpendicular to the direction of wave propagation.
A transverse wave oscillation in only one plane.
The point at which elastic deformation becomes plastic deformation.
The electric current through a conductor is proportional to the potential difference across it, provided physical conditions, such as temperature, remain constant.
The ratio between stress and strain.
The difference by which one wave leads or lags behind another.
For a body in rotational equilibrium the sum of the clockwise moments equals the sum of the anticlockwise moments.
The resistance of a battery or cell.
The resistive force that acts on a body when it moves through a fluid.
The stored ability to do work.
A form of stored energy.
The number of oscillations per unit time.
A property of a component that regulates the electric current through it.
The energy incident per square metre of a surface per second.
The change in length of an object when subjected to a tension.
When waves rebound from a barrier, changing direction but remaining in the same medium.
The extension of an elastic body is proportional to the force that causes it.
The process of turning an unpolarised wave into a plane polarised wave.
When a wave spreads out after passing around an obstacle or through a gap.
The smallest distance between one point on a wave and the identical point on the next wave.
The electrical energy transferred per unit charge when electrical energy is converted into some other form of energy.
The turning effect due to a single force, calculated from the force multiplied by the perpendicular distance from a given point.
The emission of electrons from the surface when electromagnetic radiation is incident on the surface.
The object will return to its original shape when the deforming force is removed.
The sum of the emf's is equal to the sum of the pd's in a closed loop.
The lowest frequency in a harmonic series where a stationary wave forms.
A self-propagating transverse wave that does not require a medium to travel through.
The energy stored in an object by virtue of the object being in a gravitational field.
The force per unit cross-sectional area.
A wave formed by the interference of two waves travelling in opposite directions.
When an object is accelerating under gravity.

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Created Apr 18, 2014ReportFavoriteNominate
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