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






2. The line that every particle in the rotating rigid body circles about.






3. The unit for measuring pressure. One Pascal is equal to one Newton per meter squared - 1 Pa = 1 N/m2.






4. 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.






5. Waves carried by variations in air pressure. The speed of sound waves in air at room temperature and pressure is roughly 343 m/s.






6. The disorder of a system.






7. 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.






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






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

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10. 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






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






12. The ray of light that is refracted through a surface into a different medium.






13. 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






14. The process by which a solid turns directly into gas - because it cannot exist as a liquid at a certain pressure.






15. A constant - J · s - which is useful in quantum physics. A second constant associated with Planck's constant is .

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16. The mass difference between a nucleus and the sum of the masses of the constituent protons and neutrons.






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






18. The path of each planet around the sun is an ellipse with the sun at one focus.

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19. The velocity at any given instant in time. To be contrasted with average velocity - which is a measure of the change in displacement over a given time interval.






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






21. 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.






22. A collision in which momentum is conserved but kinetic energy is not.






23. A property common to both vectors and scalars. In the graphical representation of a vector - the vector's magnitude is equal to the length of the arrow.






24. 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.






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






26. 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.






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






28. Light such that all of the associated waves have the same wavelength and are in phase.






29. A coefficient that tells how much the volume of a solid will change when it is heated or cooled.






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






31. 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






32. 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.






33. 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.






34. A property of a metal - the minimum frequency of electromagnetic radiation that is necessary to release photoelectrons from that metal.






35. 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.






36. 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.






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






38. 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.






39. A process that aligns a wave of light to oscillate in one dimension rather than two.






40. 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






41. A machine that operates by taking heat from a hot place - doing some work with that heat - and then exhausting the rest of the heat into a cool place. The internal combustion engine of a car is an example of a heat engine.






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






44. 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






45. 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






46. The lowest theoretical temperature a material can have - where the molecules that make up the material have no kinetic energy. Absolute zero is reached at 0 K or -273º C.






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






48. 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 .






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






50. 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).







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