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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. 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).






2. A class of elementary particle whose mass is between that of a proton and that of an electron. A common kind of meson is the pion.






3. 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.






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






5. 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.






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






7. The mass number - A - is the sum of the number of protons and neutrons in a nucleus. It is very close to the weight of that nucleus in atomic mass units.






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






9. The phenomenon of light bouncing off a surface - such as a mirror.






10. 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.






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






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






13. The force transmitted along a rope or cable.






14. In oscillation - a cycle occurs when an object undergoing oscillatory motion completes a "round-trip." For instance - a pendulum bob released at angle has completed one cycle when it swings to and then back to again. In period motion - a cycle is the






15. 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






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






17. When objects collide - each object feels a force for a short amount of time. This force imparts an impulse - or changes the momentum of each of the colliding objects. The momentum of a system is conserved in all kinds of collisions. Kinetic energy is






18. A quantity that possesses a magnitude but not a direction. Mass and length are common examples.






19. 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.






20. 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.






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






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






23. Kinematics is the study and description of the motion of objects.






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






25. 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






26. 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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27. A transfer of thermal energy from one system to another.






28. 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






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 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.






31. 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).






32. 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






33. 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.






34. The bending of light as it passes from one medium to another. Light refracts toward the normal when going from a less dense medium into a denser medium and away from the normal when going from a denser medium into a less dense medium.






35. The temperature at which a material will change phase from liquid to gas or gas to liquid.






36. The effect of force on rotational motion.






37. A form of vector multiplication - where two vectors are multiplied to produce a third vector. The cross product of two vectors - A and B - separated by an angle - - is - where is a unit vector perpendicular to both A and B. To deine which direction






38. 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.






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






40. 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.






41. The points on a standing wave where total destructive interference causes the medium to remain fixed at its equilibrium position.






42. 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.






43. 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






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






45. A coefficient that tells how much the volume of a solid will change when it is heated or cooled.






46. 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.






47. The motion of a body in a circular path with constant speed.






48. A transverse traveling wave created by the oscillations of an electric field and a magnetic field. Electromagnetic waves travel at the speed of light - m/s. Examples include microwaves - X rays - and visible light.






49. 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






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

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