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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 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






2. 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.






3. The energy of the molecules that make up an object. It is related to heat - which is the amount of energy transferred from one object to another object that is a different temperature.






4. A form of vector multiplication - where two vectors are multiplied to produce a third vector. The cross product of two vectors - A and B - separated by an angle - - is - where is a unit vector perpendicular to both A and B. To deine which direction






5. 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






6. The energy of a particle moving in space. It is defined in s of a particle's mass - m - and velocity - v - as (1/2)mv2.






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

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8. In an interference or diffraction pattern - the places where there is the least light.






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






10. The position - of an object according to a co-ordinate system measured in s of the angle of the object from a certain origin axis. Conventionally - this origin axis is the positive x-axis.






11. 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.






12. A pendulum consists of a bob connected to a rod or rope. At small angles - a pendulum's motion approximates simple harmonic motion as it swings back and forth without friction.






13. 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.






14. A scalar quantity. If an object is moved from point A to point B in space along path AB - the distance that the object has traveled is the length of the path AB. Distance is to be contrasted with displacement - which is simply a measure of the distan






15. 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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16. 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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17. 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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18. A back-and-forth movement about an equilibrium position. Springs - pendulums - and other oscillators experience harmonic motion.






19. The amount of heat necessary to transform a liquid at a given temperature into a gas of the same temperature - or the amount of heat needed to be taken away from a gas of a given temperature to transform it into a liquid of the same temperature.






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

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






22. The movement of a rigid body's center of mass in space.






23. The line perpendicular to a surface. There is only one normal for any given surface.






24. 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.






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






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






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






28. 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






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






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






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






32. 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.






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






34. The gravitational force exerted on a given mass.






35. 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






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






37. The force transmitted along a rope or cable.






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






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






40. The angle between a reflected ray and the normal.






41. The points of maximum negative displacement along a wave. They are the opposite of wave crests.






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






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






44. A constant in the numerator of a formula.






45. 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






46. Heat transfer by molecular collisions.






47. Atoms of the same element may have different numbers of neutrons and therefore different masses. Atoms of the same element but with different numbers of neutrons are called isotopes of the same element.






48. 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.






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






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