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






2. 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






3. The line perpendicular to a surface. There is only one normal for any given surface.






4. 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






5. Heat transfer via electromagnetic waves.






6. 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.






7. 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.






8. 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






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






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






11. 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.






12. 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).






13. Given the period - T - and semimajor axis - a - of a planet's orbit - the ratio is the same for every planet.

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14. 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.






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






16. The constant of proportionality in Newton's Law of Gravitation. It reflects the proportion of the gravitational force and - the product of two particles' masses divided by the square of the bodies' separation. N · m2/kg2.






17. A number - Z - associated with the number of protons in the nucleus of an atom. Every element can be defined in s of its atomic number - since every atom of a given element has the same number of protons.






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






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






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






21. 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.






22. A vector quantity - or vector - is an object possessing - and fully described by - a magnitude and a direction. Graphically a vector is depicted as an arrow with its magnitude given by the length of the arrow and its direction given by where the arro






23. 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






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






25. 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.






26. The two shorter sides of a right triangle that meet at the right angle.






27. The energy associated with the configuration of bodies attracted to each other by the gravitational force. It is a measure of the amount of work necessary to get the two bodies from a chosen point of reference to their present position. This point of






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






29. 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 -






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






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






32. 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.






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






34. The gravitational force exerted on a given mass.






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

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






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






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






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






40. A mirror that is curved such that its center is closer to the viewer than the edges - such as a doorknob. Convex mirrors reflect light away from a focal point.






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






43. The current induced in a circuit by a change in magnetic flux.






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






45. A vector quantity - equal to the rate of change of the angular velocity vector with time. It is typically given in units of rad/s2.






46. A model for the atom developed in 1913 by Niels Bohr. According to this model - the electrons orbiting a nucleus can only orbit at certain particular radii. Excited electrons may jump to a more distant radii and then return to their ground state - em






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






48. The energy stored in a thermodynamic system.






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






50. 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.