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Physics Vocabulary

Read the definition and type the term it defines.

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Quiz by arjaygee
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Last updated: November 14, 2023
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First submittedNovember 14, 2023
Times taken218
Average score72.0%
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Definition
First
Letter
Term
A continuous electric current that periodically reverses direction.
A
Alternating current
An electronic device used to increase the strength of the signal fed into it.
A
Amplifier
A form of matter composed of antiparticles, such as antihydrogen, consisting of antiprotons and positrons.
A
Antimatter
The basic unit of a chemical element.
A
Atom
A unit of heat, equal to 4.1868 joules; formerly defined as the quantity of heat required to raise the temperature of 1 gram of water by 1°C under standard conditions.
C
Calorie
A unit for comparing two currents, voltages, or power levels, equal to one tenth of a bel.
D
Decibel
A measure of the compactness of a substance, expressed as its mass per unit volume.
D
Density
A semiconductor device containing one p-n junction, used in circuits for converting alternating current to direct current.
D
Diode
A continuous electric current that flows in one direction only, without substantial variation in magnitude.
D
Direct current
Any phenomenon associated with stationary or moving electrons, ions, or other charged particles.
E
Electricity
A stable elementary particle present in all atoms, orbiting the nucleus in numbers equal to the atomic number of the element in the neutral atom.
E
Electron
The capacity for doing work.
E
Energy
The splitting of an atomic nucleus into approximately equal parts, either spontaneously or as a result of the impact of a particle usually with an associated release of energy.
F
Fission
A dynamic influence that changes a body from a state of rest to one of motion or changes its rate of motion.
F
Force
The number of times that a periodic function or vibration repeats itself in a specified time, often 1 second.
F
Frequency
A reaction in which two nuclei combine to form a nucleus with the release of energy.
F
Fusion
Any device for converting mechanical energy into electrical energy by electromagnetic induction.
G
Generator
The force of attraction that moves or tends to move bodies towards the centre of a celestial body, such as the earth or moon.
G
Gravity
The time taken for half of the atoms in a radioactive material to undergo decay.
H
Half-life
The tendency of a body to preserve its state of rest or uniform motion unless acted upon by an external force.
I
Inertia
A device that diverges or converges a beam of electromagnetic radiation, sound, or particles.
L
Lens
The emission of light at low temperatures by any process other than incandescence.
L
Luminescence
A stable, positively charged elementary particle, found in atomic nuclei in numbers equal to the atomic number of the element.
P
Proton
The emission or transfer of radiant energy as particles, electromagnetic waves, sound, etc.
R
Radiation
A measure of the rate of motion of a body expressed as the rate of change of its position in a particular direction with time.
V
Velocity
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