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SAT Subject Test: hysics

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 energy of a particle rotating around an axis.






2. A logorithmic unit for measuring the volume of sound - which is the square of the amplitude of sound waves.






3. The gravitational force exerted on a given mass.






4. Two oscillators that have the same frequency and amplitude - but reach their maximum displacements at different times - are said to have different phases. Similarly - two waves are in phase if their crests and troughs line up exactly - and they are o






5. The amount of heat necessary to transform a liquid at a given temperature into a gas of the same temperature - or the amount of heat needed to be taken away from a gas of a given temperature to transform it into a liquid of the same temperature.






6. For a reflected light ray - . In other words - a ray of light reflects of a surface in the same plane as the incident ray and the normal - and at an angle to the normal that is equal to the angle between the incident ray and the normal.






7. A unit for measuring angles; also called a "rad." 2p rad = 360º.






8. Heat transfer by molecular collisions.






9. The phenomenon of light bouncing off a surface - such as a mirror.






10. The energy associated with the configuration of bodies attracted to each other by the gravitational force. It is a measure of the amount of work necessary to get the two bodies from a chosen point of reference to their present position. This point of






11. The effect of force on rotational motion.






12. The state of a nonrotating object upon whom the net torque acting is zero.






13. The amplification of one wave by another - identical wave of the same sign. Two constructively interfering waves are said to be "in phase."






14. The stable position of a system where the net force acting on the object is zero.






15. 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.






16. The temperature at which a material will change phase from liquid to gas or gas to liquid.






17. The disorder of a system.






18. The center of an atom - where the protons and neutrons reside. Electrons then orbit this nucleus.






19. Any vector can be expressed as the sum of two mutually perpendicular component vectors. Usually - but not always - these components are multiples of the basis vectors - and ; that is - vectors along the x-axis and y-axis. We define these two vectors






20. The straight line that runs through the focal point and the vertex of a mirror or lens.






21. 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






22. The property by which a charge moving in a magnetic field creates an electric field.






23. A frequency - f - defined as the number of revolutions a rigid body makes in a given time interval. It is a scalar quantity commonly denoted in units of Hertz (Hz) or s-1.






24. A neutrally charged particle that - along with protons - constitutes the nucleus of an atom.






25. Done when energy is transferred by a force. The work done by a force F in displacing an object by s is W = F · s.






26. The movement of a rigid body's center of mass in space.






27. An object at rest remains at rest - unless acted upon by a net force. An object in motion remains in motion - unless acted upon by a net force.

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28. A law - || = - which states that the induced emf is the change in magnetic flux in a certain time.

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29. A unit of force: 1 N is equivalent to a 1 kg · m/s2.






30. Energy associated with the state of motion. The translational kinetic energy of an object is given by the equation .






31. The principle by which the displacements from different waves traveling in the same medium add up. Superposition is the basis for interference.






32. 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.






33. In the Bohr model of the atom - the state in which an electron has the least energy and orbits closest to the nucleus.






34. Kinematics is the study and description of the motion of objects.






35. The tendency of an object to remain at a constant velocity - or its resistance to being accelerated. Newton's First Law is alternatively called the Law of Inertia because it describes this tendency.






36. Relates the angle of incidence to the angle of refraction: .

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37. A scale for measuring temperature - defined such that water freezes at 0ºC and boils at 100ºC. 0ºC = 273 K.






38. An object is called radioactive if it undergoes radioactive decay.






39. The particles and energy released by the fission or fusion of one atom may trigger the fission or fusion of further atoms. In a chain reaction - fission or fusion is rapidly transferred to a large number of atoms - releasing tremendous amounts of ene






40. A measure of force per unit area. Pressure is measured in N/m2 or Pa.






41. The process by which a gas turns directly into a solid because it cannot exist as a liquid at certain pressures.






42. Waves carried by variations in air pressure. The speed of sound waves in air at room temperature and pressure is roughly 343 m/s.






43. The five equations used to solve problems in kinematics in one dimension with uniform acceleration.






44. 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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45. There are a few versions of this law. One is that heat flows spontaneously from hot to cold - but not in the reverse direction. Another is that there is no such thing as a 100% efficient heat engine. A third states that the entropy - or disorder - of






46. A vector quantity defined as the product of the force acting on a body multiplied by the time interval over which the force is exerted.






47. A wave that interferes with its own reflection so as to produce oscillations which stand still - rather than traveling down the length of the medium. Standing waves on a string with both ends tied down make up the harmonic series.






48. An equation - PV = nRT - that relates the pressure - volume - temperature - and quantity of an ideal gas. An ideal gas is one that obeys the approximations laid out in the kinetic theory of gases.






49. The number of hydrogen atoms in one gram of hydrogen - equal to . When counting the number of molecules in a gas - it is often convenient to count them in moles.






50. The building blocks of all matter - quarks are the constituent parts of protons - neutrons - and mesons.