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Physics Terms A-Z

Given a definition and letter, try to name the word that fits the description.
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Polen
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Last updated: February 24, 2026
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First submittedFebruary 24, 2026
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Average score65.4%
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Definition
Answer
A
A change in velocity
Acceleration
B
A force exerted by a fluid that opposes an object
Buoyancy
C
Law that states that matter/energy cannot be created nor destoryed
Conservation
D
Mass divided by volume
Density
E
The flow of electrons and charges
Electricity
F
An influence on an object; a push or pull
Force
G
The attraction between two objects
Gravity
H
The SI unit of frequency
Hertz
I
The tendency of an object to stay at rest or in motion
Inertia
J
The SI unit of energy, work, and heat
Joule
K
The motion of an object
Kinetics
L
Electromagnetic radiation in the form of waves
Light
M
A change in position of an object
Motion
N
A electrically neutral subatomic particle
Neutron / Neutrino
O
The SI unit of electrical resistance
Ohm
P
A particle of light
Photon
Q
The minimum amount of energy involved in an interaction
Quantum
R
An emission of energy
Radiation
S
299,792,358 meters per second
Speed of light
T
A branch of physics that deals with heat, work, and temperature
Thermodynamics
U
A wavelength of light between visible light and x-rays on the EM spectrum
Ultraviolet
V
How fast something is moving; Speed with direction
Velocity
W
The energy due to overcoming a force
Work
X
A wavelength of light between ultraviolet and gamma rays on the EM spectrum
X-ray
Y
A device used to connect two objects
Yoke
Z
The effect of splitting a spectral line into several components in the presence of a static magnetic field
Zeeman effect
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