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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. Heat transfer via the mass movement of molecules.






2. A constant - - not to be confused with wavelength - that defines the speed at which a radioactive element undergoes decay. The greater is - the faster the element decays.






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






4. The longest side of a right triangle - opposite to the right angle.






5. The amount heat necessary to cause a substance to undergo a phase transition.






6. The net change - - in a point's angular position - . It is a scalar quantity.






7. A form of radioactive decay where a heavy element emits an alpha particle and some energy - thus transforming into a lighter - more stable - element.






8. 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.






9. A pulley is a simple machine that consists of a rope that slides around a disk or block.






10. The name of an electron released from the surface of a metal due to the photoelectric effect.






11. Also called a converging lens - a lens that is thicker in the middle than at the edges. Convex lenses refract light through a focal point.






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






13. 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).






14. In the graphical representation of vectors - the tail of the arrow is the blunt end (the end without a point).






15. The bending of light as it passes from one medium to another. Light refracts toward the normal when going from a less dense medium into a denser medium and away from the normal when going from a denser medium into a less dense medium.






16. 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






17. For a gas held at constant pressure - temperature and volume are directly proportional.

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18. The joule (J) is the unit of work and energy. A joule is 1 N · m or 1 kg · m2/s2.






19. 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.






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






21. 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.






22. 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.






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






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






25. The phenomenon by which light traveling from a high n to a low n material will reflect from the optical interface if the incident angle is greater than the critical angle.






26. A collision in which the colliding particles stick together.






27. The motion of a body in a circular path with constant speed.






28. A collision in which both kinetic energy and momentum are conserved.






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






30. 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






31. Two quantities are inversely proportional if an increase in one results in a proportional decrease in the other - and a decrease in one results in a proportional increase in the other. In a formula defining a certain quantity - those quantities to wh






32. The temperature at which a material will change phase from solid to liquid or liquid to solid.






33. 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.






34. Given the trajectory of an object or system - the center of mass is the point that has the same acceleration as the object or system as a whole would have if its mass were concentrated at that point. In terms of force - the center of mass is the poin






35. F = ma. The net force - F - acting on an object causes the object to accelerate - a. The magnitude of the acceleration is directly proportional to the net force on the object and inversely proportional to the mass - m - of the object.

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36. Heat transfer via electromagnetic waves.






37. The experience of being in free fall. If you are in a satellite - elevator - or other free-falling object - then you have a weight of zero Newtons relative to that object.






38. 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.






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






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






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.






42. 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.






43. With spherical mirrors - the center of the sphere of which the mirror is a part. All of the normals pass through it.






44. The center of a mirror or lens.






45. The acceleration of a body experiencing uniform circular motion. This acceleration is always directed toward the center of the circle.






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

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47. The ray of light that is reflected from a mirror or other reflecting surface.






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






49. 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






50. The distance between successive wave crests - or troughs. Wavelength is measured in meters and is related to frequency and wave speed by = v/f.







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