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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. States that the net work done on an object is equal to the object's change in kinetic energy.






2. 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.






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

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






5. A nuclear reaction in which a high-energy neutron bombards a heavy - unstable atomic nucleus - causing it to split into two smaller nuclei - and releasing some neutrons and a vast amount of energy at the same time






6. 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).






7. Waves that oscillate in the same direction as the propagation of the wave. Sound is carried by longitudinal waves - since the air molecules move back and forth in the same direction the sound travels.






8. Energy associated with the state of motion. The translational kinetic energy of an object is given by the equation .






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






10. 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.






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






12. A vector quantity - L - that is the rotational analogue of linear momentum. For a single particle - the angular momentum is the cross product of the particle's displacement from the axis of rotation and the particle's linear momentum - . For a rigid






13. Also called a diverging lens - a lens that is thinner in the middle than at the edges. Concave lenses refract light away from a focal point.






14. Two oscillators that have the same frequency and amplitude - but reach their maximum displacements at different times - are said to have different phases. Similarly - two waves are in phase if their crests and troughs line up exactly - and they are o






15. The gravitational force exerted on a given mass.






16. An object that retains its overall shape - meaning that the particles that make up the rigid body stay in the same position relative to one another.






17. Another word for the frequency of a sound wave.






18. The stable position of a system where the net force acting on the object is zero.






19. 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






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






21. When dealing with reflection or refraction - the incident ray is the ray of light before it strikes the reflecting or refracting surface.






22. 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.






23. An electromagnetic wave of very high frequency.






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






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






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






27. 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.






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






29. A collision in which both kinetic energy and momentum are conserved.






30. 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.






31. With spherical mirrors - the center of the sphere of which the mirror is a part. All of the normals pass through it.






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






33. 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.






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






35. 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






36. The study of the properties of visible light - i.e. - the portion of the electromagnetic spectrum with wavelengths between 360 and 780 nm (1 nm = m/s).






37. 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






38. 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






39. 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.






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






41. The five equations used to solve problems in kinematics in one dimension with uniform acceleration.






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






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






44. The separation of different color light via refraction.






45. A vector quantity - commonly denoted by the vector s - which reflects an object's change in spatial position. The displacement vector points from the object's starting position to the object's current position in space. If an object is moved from poi






46. 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.






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






48. The energy stored in a thermodynamic system.






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






50. 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.







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