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






2. A form of radioactive decay where a heavy element ejects a beta particle and a neutrino - becoming a lighter element in the process.






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






4. An image created by a mirror or lens in such a way that light does actually come from where the image appears to be. If you place a screen in front of a real image - the image will be projected onto the screen.






5. 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.






6. Given the period - T - and semimajor axis - a - of a planet's orbit - the ratio is the same for every planet.

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7. 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






8. The reaction force of the ground - a table - etc. - when an object is placed upon it. The normal force is a direct consequence of Newton's Third Law: when an object is placed on the ground - the ground pushes back with the same force that it is pushe






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






10. A nuclear reaction that takes place only at very high temperatures. Two light atoms - often hydrogen - fuse together to form a larger single atom - releasing a vast amount of energy in the process.






11. The force that causes simple harmonic motion. The restoring force is always directed toward an object's equilibrium position.






12. When objects collide - each object feels a force for a short amount of time. This force imparts an impulse - or changes the momentum of each of the colliding objects. The momentum of a system is conserved in all kinds of collisions. Kinetic energy is






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






14. The force of gravity - F - between two particles of mass and - separated by a distance r - has a magnitude of - where G is the gravitational constant. The force is directed along the line joining the two particles.

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15. 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.






16. The standing wave with the lowest frequency that is supported by a string with both ends tied down is called the fundamental - or resonance - of the string. The wavelength of the fundamental is twice the length of the string - .






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






18. A coefficient that tells how much a material will expand or contract lengthwise when it is heated or cooled.






19. A transfer of thermal energy from one system to another.






20. A vector quantity defined as the rate of change of the velocity vector with time.






21. 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 .






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






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






24. 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.






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






26. In oscillation - a cycle occurs when an object undergoing oscillatory motion completes a "round-trip." For instance - a pendulum bob released at angle has completed one cycle when it swings to and then back to again. In period motion - a cycle is the






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






28. 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.






29. A back-and-forth movement about an equilibrium position. Springs - pendulums - and other oscillators experience harmonic motion.






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






31. 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.






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

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33. The square of the amplitude of a sound wave is called the sound's loudness - or volume.






34. 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.






35. 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






36. Heat transfer via electromagnetic waves.






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






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






39. 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






40. In an interference or diffraction pattern - the places where there is the most light.






41. The number of digits that have been accurately measured. When combining several measurements in a formula - the resulting calculation can only have as many significant digits as the measurement that has the smallest number of significant digits.






42. Waves in which the medium moves in the direction perpendicular to the propagation of the wave. Waves on a stretched string - water waves - and electromagnetic waves are all examples of transverse waves.






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






44. Essentially a restatement of energy conservation - it states that the change in the internal energy of a system is equal to the heat added plus the work done on the system.






45. The sum of a system's potential and kinetic energy. In many systems - including projectiles - pulleys - pendulums - and motion on frictionless surfaces - mechanical energy is conserved. One important type of problem in which mechanical energy is not






46. The force transmitted along a rope or cable.






47. 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






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






49. Occurs when every point in the rigid body moves in a circular path around a line called the axis of rotation.






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







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