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Test your basic knowledge |
SAT Subject Test: hysics
Start Test
Study First
Subjects
:
sat
,
science
,
physics
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The distance between successive wave crests - or troughs. Wavelength is measured in meters and is related to frequency and wave speed by = v/f.
Decibel
Wavelength
Uncertainty principle
Angular frequency
2. A constant - J · s - which is useful in quantum physics. A second constant associated with Planck's constant is .
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3. The principle stating that for any isolated system - linear momentum is constant with time.
Conservation of momentum
Electric generator
Newton's Law of Universal Gravitation
Static friction
4. The time - T - required for a rigid body to complete one revolution.
Radiation
Atom
Total internal reflection
Angular period
5. The reaction force of the ground - a table - etc. - when an object is placed upon it. The normal force is a direct consequence of Newton's Third Law: when an object is placed on the ground - the ground pushes back with the same force that it is pushe
Normal force
Work
Electromagnetic wave
Heat engine
6. A property common to both vectors and scalars. In the graphical representation of a vector - the vector's magnitude is equal to the length of the arrow.
Magnitude
Pulley
Superposition
Speed
7. A vector quantity - equal to the rate of change of the angular velocity vector with time. It is typically given in units of rad/s2.
Angular acceleration
Spectroscope
Inversely proportional
Frictional force
8. The speed at which a wave crest or trough propagates. Note that this is not the speed at which the actual medium (like the stretched string or the air particles) moves.
Universal gas constant
Wave speed
Mechanical energy
Internal energy
9. An area of high air pressure that acts as the wave crest for sound waves. The spacing between successive compressions is the wavelength of sound - and the number of successive areas of compression that arrive at the ear per second is the frequency -
Direction
Faraday's Law
Compression
Total internal reflection
10. The amount of error that's possible in a given measurement.
Refraction
De Broglie wavelength
Optics
Margin of error
11. The unit for measuring pressure. One Pascal is equal to one Newton per meter squared - 1 Pa = 1 N/m2.
Electronvolt
Significant digits
Coefficient of static friction
Pascals
12. Essentially a restatement of energy conservation - it states that the change in the internal energy of a system is equal to the heat added plus the work done on the system.
Pressure
First Law of Thermodynamics
Vector
Centripetal acceleration
13. A means of defining the direction of the cross product vector. To define the direction of the vector - position your right hand so that your fingers point in the direction of A - and then curl them around so that they point in the direction of B. Th
Right-hand rule
Atom
Thermal equilibrium
Crest
14. When an object is held in circular motion about a massive body - like a planet or a sun - due to the force of gravity - that object is said to be in orbit. Objects in orbit are in perpetual free fall - and so are therefore weightless.
Zeroth Law of Thermodynamics
Motional emf
Center of curvature
Orbit
15. Defined as the rate at which work is done - or the rate at which energy is transformed. P is measured in joules per second (J/s) - or watts (W).
Axis of rotation
Kepler's Third Law
Power
Latent heat of vaporization
16. The line that every particle in the rotating rigid body circles about.
Axis of rotation
Mutual Induction
Isolated system
Pulley
17. The process by which a solid turns directly into gas - because it cannot exist as a liquid at a certain pressure.
Sublimation
Tip
Kelvin
Fundamental
18. The mass number - A - is the sum of the number of protons and neutrons in a nucleus. It is very close to the weight of that nucleus in atomic mass units.
Law of conservation of energy
Mass number
System
Kinematics
19. The force transmitted along a rope or cable.
Electric generator
Tension force
Nuclear fission
Temperature
20. A vector quantity defined as the rate of change of the displacement vector with time. It is to be contrasted with speed - which is a scalar quantity for which no direction is specified.
Boyle's Law
Mole
Velocity
Superposition
21. The model of the atom according to which negatively charged electrons orbit a positively charged nucleus. This model was developed by Ernest Rutherford in light of the results from his gold foil experiment.
Crest
Virtual image
Coefficient of static friction
Rutherford nuclear model
22. With spherical mirrors - the radius of the sphere of which the mirror is a part.
Radius of curvature
Pascals
Nucleus
Isotope
23. A law - || = - which states that the induced emf is the change in magnetic flux in a certain time.
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24. To every action - there is an equal and opposite reaction. If an object A exerts a force on another object B - B will exert on A a force equal in magnitude and opposite in direction to the force exerted by A.
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25. A push or a pull that causes an object to accelerate.
Direction
Torque
Force
Inclined plane
26. When electromagnetic radiation shines upon a metal - the surface of the metal releases energized electrons. The way in which these electrons are released contradicts classical theories of electromagnetic radiation and supports the quantum view accord
Rarefaction
Strong nuclear force
Beta decay
Photoelectric effect
27. The separation of different color light via refraction.
Translational motion
Dispersion
Kepler's Second Law
Tangent
28. A wave with wave crests that propagate down the length of the medium - in contrast to stationary standing waves. The velocity at which a crest propagates is called the wave speed.
Magnetic flux
Isolated system
Electronvolt
Traveling waves
29. The building blocks of all matter - atoms are made up of a nucleus consisting of protons and neutrons - and a number of electrons that orbit the nucleus. An electrically neutral atom has as many protons as it has electrons.
Photon
Atom
Superposition
Gamma decay
30. A quantity that possesses a magnitude but not a direction. Mass and length are common examples.
Scalar
Weber
Polarization
Angular velocity
31. States that the current induced in a circuit by a change in magnetic flux is in the direction that will oppose that change in flux. Using the right-hand rule - point your thumb in the opposite direction of the change in magnetic flux. The direction y
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32. The disorder of a system.
Rigid body
Entropy
Unit vector
Beta decay
33. Objects that experience oscillatory or simple harmonic motion when distorted. Their motion is described by Hooke's Law.
Tension force
Vertex
Tail
Spring
34. A measurement of a body's inertia - or resistance to being accelerated.
Rigid body
Deposition
Beta decay
Mass
35. A form of radioactive decay where a heavy element ejects a beta particle and a neutrino - becoming a lighter element in the process.
Margin of error
Entropy
Kelvin
Beta decay
36. An object cannot be cooled to absolute zero.
Alpha particle
Third Law of Thermodynamics
Spectroscope
Efficiency
37. When dealing with reflection or refraction - the incident ray is the ray of light before it strikes the reflecting or refracting surface.
Incident ray
Conservation of Angular Momentum
Celsius
Inertia
38. A unit for measuring angles; also called a "rad." 2p rad = 360º.
Magnitude
Crest
Radian
Destructive interference
39. A constant in the numerator of a formula.
Photoelectron
Weber
Heat transfer
Constant of proportionality
40. A measure of force per unit area. Pressure is measured in N/m2 or Pa.
Constant of proportionality
Unit vector
Pressure
Third Law of Thermodynamics
41. Represented by R = 8.31 J/mol · K - the universal gas constant fits into the ideal gas law so as to relate temperature to the average kinetic energy of gas molecules.
Kinetic friction
Doppler shift
Universal gas constant
Hertz (Hz)
42. The force that causes simple harmonic motion. The restoring force is always directed toward an object's equilibrium position.
Gold foil experiment
Chain reaction
Electromagnetic wave
Restoring force
43. A particle - which consists of two protons and two neutrons. It is identical to the nucleus of a helium atom and is ejected by heavy particles undergoing alpha decay.
Legs
Angular frequency
Latent heat of vaporization
Alpha particle
44. A principle derived by Werner Heisenberg in 1927 that tells us that we can never know both the position and the momentum of a particle at any given time.
Uncertainty principle
Directly proportional
Transverse waves
Compression
45. In reference to oscillation - amplitude is the maximum displacement of the oscillator from its equilibrium position. Amplitude tells how far an oscillator is swinging back and forth. In periodic motion - amplitude is the maximum displacement in each
Coefficient of volume expansion
Latent heat of transformation
Amplitude
Significant digits
46. The amount of heat necessary for a material undergoing sublimation to make a phase change from gas to solid or solid to gas - without a change in temperature.
Tail
Latent heat of sublimation
Uncertainty principle
Electric generator
47. The line perpendicular to a surface. There is only one normal for any given surface.
Kinematic equations
Angular acceleration
Orbit
Normal
48. The force of gravity - F - between two particles of mass and - separated by a distance r - has a magnitude of - where G is the gravitational constant. The force is directed along the line joining the two particles.
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49. A device made of two coils - which converts current of one voltage into current of another voltage. In a step-up transformer - the primary coil has fewer turns than the secondary - thus increasing the voltage. In a step-down transformer - the seconda
Transformer
Isolated system
Newton's First Law
Basis vector
50. The energy of the molecules that make up an object. It is related to heat - which is the amount of energy transferred from one object to another object that is a different temperature.
Thermal energy
Lenz's Law
Boiling point
Angular velocity