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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 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.






2. A constant - - not to be confused with wavelength - that defines the speed at which a radioactive element undergoes decay. The greater is - the faster the element decays.






3. 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.






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






5. Linear momentum - p - commonly called "momentum" for short - is a vector quantity defined as the product of an object's mass - m - and its velocity - v.






6. The gravitational force exerted on a given mass.






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






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






9. A sheet - film - or screen with a pattern of equally spaced slits. Typically the width of the slits and space between them is chosen to generate a particular diffraction pattern.






10. An area of high air pressure that acts as the wave crest for sound waves. The spacing between successive compressions is the wavelength of sound - and the number of successive areas of compression that arrive at the ear per second is the frequency -






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






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






13. Two materials are in thermal equilibrium if they are at the same temperature.






14. The ratio of the size of the image produced by a mirror or lens to the size of the original object. This number is negative if the image is upside-down.






15. The time it takes a system to pass through one cycle of its repetitive motion. The period - T - is the inverse of the motion's frequency - f = 1/T.






16. The center of an atom - where the protons and neutrons reside. Electrons then orbit this nucleus.






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






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






19. 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.






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






21. 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.






22. A wedge or a slide. The dynamics of objects sliding down inclined planes is a popular topic on SAT II Physics.






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

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24. The property by which a charge moving in a magnetic field creates an electric field.






25. A measurement of a body's inertia - or resistance to being accelerated.






26. A device that converts mechanical energy to electrical energy by rotating a coil in a magnetic field; sometimes called a "dynamo."






27. A vector quantity - - that reflects the change of angular displacement with time - and is typically given in units of rad/s. To find the direction of the angular velocity vector - take your right hand and curl your fingers along the particle or body






28. The acceleration of a body experiencing uniform circular motion. This acceleration is always directed toward the center of the circle.






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. Objects that experience oscillatory or simple harmonic motion when distorted. Their motion is described by Hooke's Law.






31. The amount of heat needed to raise the temperature of one gram of water by one degree Celsius. 1 cal = 4.19 J.






32. If two systems - A and B - are in thermal equilibrium and if B and C are also in thermal equilibrium - then systems A and C are necessarily in thermal equilibrium.






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






34. 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






35. An area of high air pressure that acts as the wave trough for sound waves. The spacing between successive rarefactions is the wavelength of sound - and the number of successive areas of rarefaction that arrive at the ear per second is the frequency -






36. When a solid - liquid - or gas changes into another phase of matter.






37. 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






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






39. The angle between a refracted ray and the line normal to the surface.






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






41. 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






42. 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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43. A small particle-like bundle of electromagnetic radiation.






44. 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.






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






46. 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.






47. The amount of error that's possible in a given measurement.






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






49. The spectrum containing all the different kinds of electromagnetic waves - ranging in wavelength and frequency.






50. 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.







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