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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. 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.






2. 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 -






3. In the Bohr model of the atom - the state in which an electron has the least energy and orbits closest to the nucleus.






4. The unit of magnetic flux - equal to one T · m2.






5. The property by which a changing current in one coil of wire induces an emf in another.






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






7. 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.






8. A force caused by the roughness of two materials in contact - deformations in the materials - and a molecular attraction between the materials. Frictional forces are always parallel to the plane of contact between two surfaces and opposite the direct






9. A neutrally charged particle that - along with protons - constitutes the nucleus of an atom.






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






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






12. The time - T - required for a rigid body to complete one revolution.






13. A constant in the numerator of a formula.






14. The property of a vector that distinguishes it from a scalar: while scalars have only a magnitude - vectors have both a magnitude and a direction. When graphing vectors in the xy-coordinate space - direction is usually given by the angle measured cou






15. 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.






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






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

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18. An equation - PV = nRT - that relates the pressure - volume - temperature - and quantity of an ideal gas. An ideal gas is one that obeys the approximations laid out in the kinetic theory of gases.






19. States that the current induced in a circuit by a change in magnetic flux is in the direction that will oppose that change in flux. Using the right-hand rule - point your thumb in the opposite direction of the change in magnetic flux. The direction y

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






21. The separation of different color light via refraction.






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






23. 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.






24. 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.






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






26. 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






27. The tendency of an object to remain at a constant velocity - or its resistance to being accelerated. Newton's First Law is alternatively called the Law of Inertia because it describes this tendency.






28. 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.






29. The force that binds protons and neutrons together in the atomic nucleus.






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






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






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






33. The amount of heat of a material required to raise the temperature of either one kilogram or one gram of that material by one degree Celsius. Different units may be used depending on whether specific heat is measured in s of grams or kilograms - and






34. Done when energy is transferred by a force. The work done by a force F in displacing an object by s is W = F · s.






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






36. 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






37. The principle by which the displacements from different waves traveling in the same medium add up. Superposition is the basis for interference.






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






39. 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.






40. 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.






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. 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






43. 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






44. 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.






45. For a reflected light ray - . In other words - a ray of light reflects of a surface in the same plane as the incident ray and the normal - and at an angle to the normal that is equal to the angle between the incident ray and the normal.






46. In the graphical representation of vectors - the tail of the arrow is the blunt end (the end without a point).






47. Also called a converging lens - a lens that is thicker in the middle than at the edges. Convex lenses refract light through a focal point.






48. There are a few versions of this law. One is that heat flows spontaneously from hot to cold - but not in the reverse direction. Another is that there is no such thing as a 100% efficient heat engine. A third states that the entropy - or disorder - of






49. 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.






50. 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