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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. 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






2. 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






3. 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






4. For a gas held at a constant temperature - pressure and volume are inversely proportional.

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






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






7. 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.






8. The time - T - required for a rigid body to complete one revolution.






9. 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.






10. Body diagram- Illustrates the forces acting on an object - drawn as vectors originating from the center of the object.






11. A collision in which momentum is conserved but kinetic energy is not.






12. An experiment by Ernest Rutherford that proved for the first time that atoms have nuclei.






13. The application of kinematics to understand why objects move the way they do. More precisely - dynamics is the study of how forces cause motion.






14. 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






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






16. 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






17. The unit of magnetic flux - equal to one T · m2.






18. 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






19. An object that retains its overall shape - meaning that the particles that make up the rigid body stay in the same position relative to one another.






20. 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






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






22. 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






23. A unit of measurement for energy on atomic levels. 1 eV = J.






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






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






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






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






28. 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.






29. A coefficient that tells how much the volume of a solid will change when it is heated or cooled.






30. A model for the atom developed in 1913 by Niels Bohr. According to this model - the electrons orbiting a nucleus can only orbit at certain particular radii. Excited electrons may jump to a more distant radii and then return to their ground state - em






31. The effect of force on rotational motion.






32. A number - Z - associated with the number of protons in the nucleus of an atom. Every element can be defined in s of its atomic number - since every atom of a given element has the same number of protons.






33. 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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34. The time it takes a system to pass through one cycle of its repetitive motion. The period - T - is the inverse of the motion's frequency - f = 1/T.






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






36. 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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37. A mirror that is curved such that its center is closer to the viewer than the edges - such as a doorknob. Convex mirrors reflect light away from a focal point.






38. A transverse traveling wave created by the oscillations of an electric field and a magnetic field. Electromagnetic waves travel at the speed of light - m/s. Examples include microwaves - X rays - and visible light.






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






40. 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 .






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






42. When two waves of slightly different frequencies interfere with one another - they produce a "beating" interference pattern that alternates between constructive (in-phase) and destructive (out-of-phase). In the case of sound waves - this sort of inte






43. An object that moves about a stable equilibrium point and experiences a restoring force that is directly proportional to the oscillator's displacement.






44. A system with many parts in periodic - or repetitive - motion. The oscillations in one part cause vibrations in nearby parts.






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






46. 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.






47. The number - N - of neutrons in an atomic nucleus.






48. 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.






49. When a light ray strikes a surface - the angle of incidence is the angle between the incident ray and the normal.






50. States that the net work done on an object is equal to the object's change in kinetic energy.