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






2. 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.






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






4. A vector quantity defined as the rate of change of the displacement vector with time. It is to be contrasted with speed - which is a scalar quantity for which no direction is specified.






5. 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






6. The force transmitted along a rope or cable.






7. 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.






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






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






10. When a light ray strikes a surface - the angle of incidence is the angle between the incident ray and the normal.






11. Indicates how "bouncy" or "stiff" a spring is. More specifically - the spring constant - k - is the constant of proportionality between the restoring force exerted by the spring - and the spring's displacement from equilibrium. The greater the value






12. 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






13. The points of maximum displacement along a wave. In traveling waves - the crests move in the direction of propagation of the wave. The crests of standing waves - also called anti-nodes - remain in one place.






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






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






16. A device made of two coils - which converts current of one voltage into current of another voltage. In a step-up transformer - the primary coil has fewer turns than the secondary - thus increasing the voltage. In a step-down transformer - the seconda






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






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






19. An experiment in 1879 that showed that the speed of light is constant to all observers. Einstein used the results of this experiment as support for his theory of special relativity.






20. The ray of light that is reflected from a mirror or other reflecting surface.






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






22. 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.






23. 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






24. 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.






25. A measure of force per unit area. Pressure is measured in N/m2 or Pa.






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






27. 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






28. 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






29. 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.






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

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






32. Relates the angle of incidence to the angle of refraction: .

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






34. For a gas held at a constant temperature - pressure and volume are inversely proportional.

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






36. If a line is drawn from the sun to the planet - then the area swept out by this line in a given time interval is constant.

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






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






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






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






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






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






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






44. 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).






45. A back-and-forth movement about an equilibrium position. Springs - pendulums - and other oscillators experience harmonic motion.






46. Light such that all of the associated waves have the same wavelength and are in phase.






47. A wave with wave crests that propagate down the length of the medium - in contrast to stationary standing waves. The velocity at which a crest propagates is called the wave speed.






48. A particle - identical to an electron. Beta particles are ejected from an atom in the process of beta decay.






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






50. The sum of a system's potential and kinetic energy. In many systems - including projectiles - pulleys - pendulums - and motion on frictionless surfaces - mechanical energy is conserved. One important type of problem in which mechanical energy is not







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