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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. An almost massless particle of neutral charge that is released along with a beta particle in beta decay.






2. The line that every particle in the rotating rigid body circles about.






3. A property of a metal - the minimum frequency of electromagnetic radiation that is necessary to release photoelectrons from that metal.






4. A unit vector is a vector with length 1.






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






6. A small particle-like bundle of electromagnetic radiation.






7. A positively charged particle that - along with the neutron - occupies the nucleus of the atom.






8. 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






9. The points of maximum displacement along a wave. In traveling waves - the crests move in the direction of propagation of the wave. The crests of standing waves - also called anti-nodes - remain in one place.






10. A quantity that possesses a magnitude but not a direction. Mass and length are common examples.






11. 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.






12. 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.






13. The units of frequency - defined as inverse-seconds (1 Hz = 1 s-1). "Hertz" can be used interchangeably with "cycles per second."






14. A rough approximation of how gases work - that is quite accurate in everyday conditions. According to the kinetic theory - gases are made up of tiny - round molecules that move about in accordance with Newton's Laws - and collide with one another and






15. 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 .






16. The point of a mirror or lens where all light that runs parallel to the principal axis will be focused. Concave mirrors and convex lenses are designed to focus light into the focal point. Convex mirrors and concave lenses focus light away from the fo






17. 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.






18. 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






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






20. A device that breaks incoming light down into spectral rays - so that one can see the exact wavelength constituents of the light.






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






22. 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.






23. The current induced in a circuit by a change in magnetic flux.






24. Indicates how "bouncy" or "stiff" a spring is. More specifically - the spring constant - k - is the constant of proportionality between the restoring force exerted by the spring - and the spring's displacement from equilibrium. The greater the value






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






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






27. The property by which a changing current in one coil of wire induces an emf in another.






28. A particle - identical to an electron. Beta particles are ejected from an atom in the process of beta decay.






29. A wavelength - given by = h/mv - which is associated with matter. Louis de Broglie proposed the idea that matter could be treated as waves in 1923 and applied this theory successfully to small particles like electrons.






30. Two materials are in thermal equilibrium if they are at the same temperature.






31. Energy cannot be made or destroyed; energy can only be changed from one place to another or from one form to another.






32. 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.






33. If the net torque acting on a rigid body is zero - then the angular momentum of the body is constant or conserved.






34. 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






35. The force transmitted along a rope or cable.






36. The energy of a particle rotating around an axis.






37. A vector of magnitude 1 along one of the coordinate axes. Generally - we take the basis vectors to be and - the vectors of length 1 along the x- and y-axes - respectively.






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






39. The two shorter sides of a right triangle that meet at the right angle.






40. The force necessary to maintain a body in uniform circular motion. This force is always directed radially toward the center of the circle.






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






42. The disorder of a system.






43. The ray of light that is refracted through a surface into a different medium.






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






45. 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.






46. A push or a pull that causes an object to accelerate.






47. A vector quantity - - that reflects the change of angular displacement with time - and is typically given in units of rad/s. To find the direction of the angular velocity vector - take your right hand and curl your fingers along the particle or body






48. A wave on a string that is tied to a pole at one end will reflect back toward its source - producing a wave that is the mirror-image of the original and which travels in the opposite direction.






49. The emf created by the motion of a charge through a magnetic field.






50. The effect of force on rotational motion.







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