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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. A measure of the average kinetic energy of the molecules in a system. Temperature is related to heat by the specific heat of a given substance.
Dynamics
Deposition
Momentum
Temperature
2. The substance that is displaced as a wave propagates through it. Air is the medium for sound waves - the string is the medium of transverse waves on a string - and water is the medium for ocean waves. Note that even if the waves in a given medium tra
Electromagnetic spectrum
Medium
Newton's Law of Universal Gravitation
Pendulum
3. Objects that experience oscillatory or simple harmonic motion when distorted. Their motion is described by Hooke's Law.
Critical angle
Polarization
Pascals
Spring
4. A force caused by the roughness of two materials in contact - deformations in the materials - and a molecular attraction between the materials. Frictional forces are always parallel to the plane of contact between two surfaces and opposite the direct
Thermal equilibrium
Third Law of Thermodynamics
Frictional force
Induced current
5. An experiment in 1879 that showed that the speed of light is constant to all observers. Einstein used the results of this experiment as support for his theory of special relativity.
De Broglie wavelength
Concave mirror
Bohr atomic model
Michelson-Morley experiment
6. The application of kinematics to understand why objects move the way they do. More precisely - dynamics is the study of how forces cause motion.
Dynamics
Loudness
Acceleration
Gamma decay
7. The distance between the focal point and the vertex of a mirror or lens. For concave mirrors and convex lenses - this number is positive. For convex mirrors and concave lenses - this number is negative.
Focal length
Inversely proportional
Spring constant
Celsius
8. The center of a mirror or lens.
Vertex
Radioactivity
Diffraction
Mass number
9. A unit for measuring angles; also called a "rad." 2p rad = 360º.
Spectroscope
Legs
Radian
Threshold frequency
10. The energy of a particle moving in space. It is defined in s of a particle's mass - m - and velocity - v - as (1/2)mv2.
Translational kinetic energy
Principal axis
Trough
Mechanical energy
11. 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.
Activity
Pitch
Antinode
Wave speed
12. The force involved in beta decay that changes a proton to a neutron and releases an electron and a neutrino.
Melting point
Gravitational Potential Energy
Incident ray
Weak nuclear force
13. The square of the amplitude of a sound wave is called the sound's loudness - or volume.
Constant of proportionality
Pendulum
Superposition
Loudness
14. An experiment by Ernest Rutherford that proved for the first time that atoms have nuclei.
Sine
Kepler's Second Law
Electromagnetic spectrum
Gold foil experiment
15. The time - T - required for a rigid body to complete one revolution.
Decibel
Joule
Angular period
Coefficient of static friction
16. A vector quantity defined as the rate of change of the velocity vector with time.
Nuclear fusion
Significant digits
Joule
Acceleration
17. The property of a vector that distinguishes it from a scalar: while scalars have only a magnitude - vectors have both a magnitude and a direction. When graphing vectors in the xy-coordinate space - direction is usually given by the angle measured cou
De Broglie wavelength
Node
Celsius
Direction
18. A measurement of a body's inertia - or resistance to being accelerated.
Alpha decay
Mass
Specific heat
Velocity
19. The unit for measuring pressure. One Pascal is equal to one Newton per meter squared - 1 Pa = 1 N/m2.
Mass number
Decibel
Vector
Pascals
20. If the net torque acting on a rigid body is zero - then the angular momentum of the body is constant or conserved.
Conservation of Angular Momentum
Vector
Displacement
Hertz (Hz)
21. The index of refraction n = c/v of a substance characterizes the speed of light in that substance - v. It also characterizes - by way of Snell's Law - the angle at which light refracts in that substance.
Radiation
Index of refraction
Third Law of Thermodynamics
Bohr atomic model
22. 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
Real image
Diffraction
Hertz (Hz)
Normal force
23. The velocity at any given instant in time. To be contrasted with average velocity - which is a measure of the change in displacement over a given time interval.
Half
Kinetic friction
Node
Instantaneous velocity
24. An almost massless particle of neutral charge that is released along with a beta particle in beta decay.
Alpha decay
Bohr atomic model
Significant digits
Neutrino
25. The name of an electron released from the surface of a metal due to the photoelectric effect.
Photoelectron
Photon
First Law of Thermodynamics
Kinetic theory of gases
26. A form of vector multiplication - where two vectors are multiplied to produce a scalar. The dot product of two vectors - A and B - is expressed by the equation A · B = AB cos .
Oscillation
Latent heat of transformation
Concave lens
Dot product
27. 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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28. Waves carried by variations in air pressure. The speed of sound waves in air at room temperature and pressure is roughly 343 m/s.
Weightlessness
Sound
Pascals
Proton
29. A particle - identical to an electron. Beta particles are ejected from an atom in the process of beta decay.
Beta particle
Photoelectric effect
Magnification
Concave lens
30. The process by which a solid turns directly into gas - because it cannot exist as a liquid at a certain pressure.
Center of curvature
Speed
Sublimation
Acceleration
31. A class of elementary particle whose mass is between that of a proton and that of an electron. A common kind of meson is the pion.
Meson
Inclined plane
Instantaneous velocity
Angle of incidence
32. 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.
Orbit
Work-energy theorem
Angular position
Threshold frequency
33. States that the net work done on an object is equal to the object's change in kinetic energy.
Momentum
Atom
Incident ray
Work-energy theorem
34. Waves in which the medium moves in the direction perpendicular to the propagation of the wave. Waves on a stretched string - water waves - and electromagnetic waves are all examples of transverse waves.
Convex mirror
Newton's Law of Universal Gravitation
Transverse waves
Destructive interference
35. A unit of measurement for energy on atomic levels. 1 eV = J.
Electronvolt
Energy
Beta particle
Focal point
36. The amount of heat needed to raise the temperature of one gram of water by one degree Celsius. 1 cal = 4.19 J.
Direction
Calorie
Focal length
Velocity
37. A vector quantity - L - that is the rotational analogue of linear momentum. For a single particle - the angular momentum is the cross product of the particle's displacement from the axis of rotation and the particle's linear momentum - . For a rigid
Conduction
Directly proportional
Angular momentum
Elastic collision
38. Also called a diverging lens - a lens that is thinner in the middle than at the edges. Concave lenses refract light away from a focal point.
Kinetic energy
Concave lens
Newton's First Law
Legs
39. 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
Right-hand rule
Longitudinal waves
Equilibrium
40. A coefficient that tells how much a material will expand or contract lengthwise when it is heated or cooled.
Coefficient of linear expansion
Kepler's Third Law
Mole
Node
41. Energy associated with the state of motion. The translational kinetic energy of an object is given by the equation .
Reflected ray
Electromagnetic wave
Kinetic energy
Tip
42. Kinematics is the study and description of the motion of objects.
Newton's Second Law
Boyle's Law
Zeroth Law of Thermodynamics
Kinematics
43. A transfer of thermal energy. We don't speak about systems "having" heat - but about their "transferring" heat - much in the way that dynamical systems don't "have" work - but rather "do" work.
Rotational kinetic energy
Mole
Heat
Pulley
44. An image created by a mirror or lens in such a way that light does not actually come from where the image appears to be.
Kepler's Third Law
Sound
Work function
Virtual image
45. Occurs when every point in the rigid body moves in a circular path around a line called the axis of rotation.
Rotational motion
Chain reaction
Normal force
Lenz's Law
46. A machine that operates by taking heat from a hot place - doing some work with that heat - and then exhausting the rest of the heat into a cool place. The internal combustion engine of a car is an example of a heat engine.
Basis vector
Kinetic energy
Hertz (Hz)
Heat engine
47. 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
Isotope
Principal axis
Deposition
Right-hand rule
48. The temperature at which a material will change phase from liquid to gas or gas to liquid.
Snell's Law
Boiling point
Universal gas constant
Pulley
49. The amplification of one wave by another - identical wave of the same sign. Two constructively interfering waves are said to be "in phase."
Convex lens
Weber
Constructive interference
Mass number
50. The energy stored in a thermodynamic system.
Latent heat of sublimation
Activity
Mass
Internal energy