Physics Keywords

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Acceleration
Change in a velocity over a certain amount of time.
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Ammeter
A device used to measure electric current in amps.
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Amplitude
The height or depth of the wave from the middle to the crest or trough respectively.
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Angle of Incidence
Angle between the normal and incident ray.
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Angle of Reflection
Angle between the normal and reflected ray.
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Barometer
A device used to measure atmospheric pressure in pascals.
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Brownian Motion
The random movement of particles in a liquid due to collisions.
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Centre of Mass
The point of an object through which the forces acting on an object seem to act.
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Centripetal Force
The force needed to keep an object moving in a circular motion.
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Condenstation
The change of state from gas to liquid.
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Convection
Transfer of energy in a liquid or gas due to different temperatures causing circulation within the fluid.
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Density
The mass divided by the volume of an object.
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Diffraction
The spreading of waves as they pass through a gap or crack in a object.
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Disperation
The splitting of white light waves when they enter and pass through a glass prism.
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Echo
The reflection of sound on smooth surfaces.
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Efficiency
The amount of useful energy outputted by a device divided by the total energy input.
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Elastic
The description of an object or shape that regains its original position and shape after being altered or distorted.
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Electromagent
A device which can attract magnetised objects by using electricity.
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Equilibrium
When two or more forces are balanced.
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Evaporation
The change of state from liquid to gas.
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Frequency
The number of waves passing through a point in a period of time.
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Gravity
The force which pulls all objects within the Earth's atmosphere towards the centre of Earth.
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Hydraulic System
A system which uses pressure in liquids or fluids to exert a force of an object.
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Inertia
Resistance from the mass of an object.
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Kinetic Energy
Motion energy. Any object that is moving is said to have kinetic energy.
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Longitudinal Waves
Waves in which the direction of the vibration is parallel to the direction in which the waves are moving.
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Loudness
How high the amplitude is of a sound.
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Magnification
When an object has increased in sized so its image is larger than the original object.
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Mass
The amount of matter in an object.
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Melting
The change of state from a solid to a liquid.
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Moment
A turning force. Calculated by multiplying the force and perpendicular distance from the pivot together.
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Nuclear Energy
Energy released when a nucleus of an atom splits.
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Nuclear Fission
he process in which an uranium nucleus splits in two to form smaller nuclei.
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Nuclear Fusion
The process in which two smaller nuclei join together to form a bigger nucleus.
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Nucleus
The positively charged object found at the centre of every atom.
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Pitch
The frequency of a sound wave. The higher the frequency the higher the pitch.
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Potential Differece
Energy transferred to a given amount of electric charge.
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Pressure
The amount of force applied on a certain area.
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Radioactivity
When properties of materials make them give out radiation all the time.
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Reflection
When waves bounce back once they hit smooth surfaces.
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Refraction
The change of directions and speed of waves when they travel across a different medium.
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Resistance
Potential difference divided by current. The unit is Ohms.
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Resultant Force
A single force on an object that has the same effect as all the forces acting on it.
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Scalar
A quantity with magnitude but not direction.
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Specific Heat Capacity
Energy needed for one kilogram of a substance to be raised by 1 degree Celsius.
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Speed
Distance travelled divided by a certain period of time.
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Static Electricity
When an object gains an electric charge without being connected to an electric current.
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Terminal Velocity
The maximum possible speed of an object.
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Thermometer
A device used to measure the temperature.
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Total Internal Reflection
A light ray which is wholly and completely reflected when it hits a flat surface.
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Vector
A physical quantity which has magnitude and direction.
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Voltmeter
A device used to measure voltage or potential difference.
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Waves
Disturbances that transfer energy from one place to another.
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Other cards in this set

Card 2

Front

A device used to measure electric current in amps.

Back

Ammeter

Card 3

Front

The height or depth of the wave from the middle to the crest or trough respectively.

Back

Preview of the back of card 3

Card 4

Front

Angle between the normal and incident ray.

Back

Preview of the back of card 4

Card 5

Front

Angle between the normal and reflected ray.

Back

Preview of the back of card 5
View more cards

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