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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. 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.






2. An electromagnetic wave of very high frequency.






3. The emf created by the motion of a charge through a magnetic field.






4. The effect of force on rotational motion.






5. An image created by a mirror or lens in such a way that light does not actually come from where the image appears to be.






6. The number of hydrogen atoms in one gram of hydrogen - equal to . When counting the number of molecules in a gas - it is often convenient to count them in moles.






7. The distance between the focal point and the vertex of a mirror or lens. For concave mirrors and convex lenses - this number is positive. For convex mirrors and concave lenses - this number is negative.






8. 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.






9. The building blocks of all matter - quarks are the constituent parts of protons - neutrons - and mesons.






10. In a right triangle - the tangent of a given angle is the length of the side opposite the angle divided by the length of the side adjacent to the triangle.






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






12. The points midway between nodes on a standing wave - where the oscillations are largest.






13. 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.






14. A constant in the numerator of a formula.






15. A principle derived by Werner Heisenberg in 1927 that tells us that we can never know both the position and the momentum of a particle at any given time.






16. 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.






17. 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.






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

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






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






21. 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.






22. An experiment in 1879 that showed that the speed of light is constant to all observers. Einstein used the results of this experiment as support for his theory of special relativity.






23. 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






24. In the graphical representation of vectors - the tip of the arrow is the pointy end.






25. 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.






26. 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.






27. 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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28. A scale for measuring temperature - defined such that 0K is the lowest theoretical temperature a material can have. 273K = 0ºC.






29. A reference frame in which Newton's First Law is true. Two inertial reference frames move at a constant velocity relative to one another. According to the first postulate of Einstein's theory of special relativity - the laws of physics are the same i






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






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






32. The dot product of the area and the magnetic field passing through it. Graphically - it is a measure of the number and length of magnetic field lines passing through that area. It is measured in Webers (Wb).






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






34. 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.






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






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






37. The amount of heat necessary to transform a solid at a given temperature into a liquid of the same temperature - or the amount of heat needed to be removed from a liquid of a given temperature to transform it into a solid of the same temperature.






38. Life- The amount of time it takes for one-half of a radioactive sample to decay.






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






40. For a heat engine - the ratio of work done by the engine to heat intake. Efficiency is never 100%.






41. Energy associated with an object's position in space - or configuration in relation to other objects. This is a latent form of energy - where the amount of potential energy reflects the amount of energy that potentially could be released as kinetic e






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






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






44. A vector quantity defined as the product of the force acting on a body multiplied by the time interval over which the force is exerted.






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






46. A measure of the average kinetic energy of the molecules in a system. Temperature is related to heat by the specific heat of a given substance.






47. 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 .






48. 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






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






50. To every action - there is an equal and opposite reaction. If an object A exerts a force on another object B - B will exert on A a force equal in magnitude and opposite in direction to the force exerted by A.

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