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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 energy stored in a thermodynamic system.






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






3. The experience of being in free fall. If you are in a satellite - elevator - or other free-falling object - then you have a weight of zero Newtons relative to that object.






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

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5. The number - N - of neutrons in an atomic nucleus.






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

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7. 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.






8. The joule (J) is the unit of work and energy. A joule is 1 N · m or 1 kg · m2/s2.






9. 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






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

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11. 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.






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






13. Defined as the rate at which work is done - or the rate at which energy is transformed. P is measured in joules per second (J/s) - or watts (W).






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






15. 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






16. A unit for measuring angles; also called a "rad." 2p rad = 360º.






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






18. The principle stating that for any isolated system - linear momentum is constant with time.






19. In radioactive substances - the number of nuclei that decay per second. Activity - A - will be larger in large samples of radioactive material - since there will be more nuclei.






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






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






22. A wave with wave crests that propagate down the length of the medium - in contrast to stationary standing waves. The velocity at which a crest propagates is called the wave speed.






23. 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






24. The bending of light at the corners of objects or as it passes through narrow slits or apertures.






25. 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.






26. A rough approximation of how gases work - that is quite accurate in everyday conditions. According to the kinetic theory - gases are made up of tiny - round molecules that move about in accordance with Newton's Laws - and collide with one another and






27. Waves produced by a source that is moving with respect to the observer will seem to have a higher frequency and smaller wavelength if the motion is towards the observer - and a lower frequency and longer wavelength if the motion is away from the obse






28. The distance between successive wave crests - or troughs. Wavelength is measured in meters and is related to frequency and wave speed by = v/f.






29. The disorder of a system.






30. 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






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






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






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






34. A wave that interferes with its own reflection so as to produce oscillations which stand still - rather than traveling down the length of the medium. Standing waves on a string with both ends tied down make up the harmonic series.






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






36. 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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37. 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.






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






39. 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.






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






41. The force between two surfaces that are not moving relative to one another. The force of static friction is parallel to the plane of contact between the two objects and resists the force pushing or pulling on the object.






42. If the net torque acting on a rigid body is zero - then the angular momentum of the body is constant or conserved.






43. The force transmitted along a rope or cable.






44. An object is called radioactive if it undergoes radioactive decay.






45. When an object is held in circular motion about a massive body - like a planet or a sun - due to the force of gravity - that object is said to be in orbit. Objects in orbit are in perpetual free fall - and so are therefore weightless.






46. A system that no external net force acts upon. Objects within the system may exert forces upon one another - but they cannot receive any impulse from outside forces. Momentum is conserved in isolated systems.






47. The separation of different color light via refraction.






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






49. The energy of a particle rotating around an axis.






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