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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. A body or set of bodies that we choose to analyze as a group.






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






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






5. 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.






6. The force involved in beta decay that changes a proton to a neutron and releases an electron and a neutrino.






7. 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.






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






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






10. An object cannot be cooled to absolute zero.






11. 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.






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






13. In a right triangle - the sine of a given angle is the length of the side opposite the angle divided by the length of the hypotenuse.






14. 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.






15. A sheet - film - or screen with a pattern of equally spaced slits. Typically the width of the slits and space between them is chosen to generate a particular diffraction pattern.






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






17. 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.






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






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






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






21. With spherical mirrors - the radius of the sphere of which the mirror is a part.






22. A particle - which consists of two protons and two neutrons. It is identical to the nucleus of a helium atom and is ejected by heavy particles undergoing alpha decay.






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






24. 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.






25. 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






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






27. For an oscillating spring - the restoring force exerted by the spring is directly proportional to the displacement. That is - the more the spring is displaced - the stronger the force that will pull toward the equilibrium position. This law is expres

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






29. 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.






30. The separation of different color light via refraction.






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






32. 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






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






34. 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






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






36. A mirror that is curved such that its center is farther from the viewer than the edges - such as the front of a spoon. Concave mirrors reflect light through a focal point.






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






38. 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.






39. If two systems - A and B - are in thermal equilibrium and if B and C are also in thermal equilibrium - then systems A and C are necessarily in thermal equilibrium.






40. For two given media - the smallest angle of incidence at which total internal reflection occurs.






41. Heat transfer via the mass movement of molecules.






42. 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.






43. If a line is drawn from the sun to the planet - then the area swept out by this line in a given time interval is constant.

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






45. The energy stored in a thermodynamic system.






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






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






48. A vector quantity defined as the rate of change of the displacement vector with time. It is to be contrasted with speed - which is a scalar quantity for which no direction is specified.






49. The number of cycles executed by a system in one second. Frequency is the inverse of period - f = 1/T. Frequency is measured in hertz - Hz.






50. 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.







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