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






2. 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.






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






4. In radioactive substances - the number of nuclei that decay per second. Activity - A - will be larger in large samples of radioactive material - since there will be more nuclei.






5. The dot product of the area and the magnetic field passing through it. Graphically - it is a measure of the number and length of magnetic field lines passing through that area. It is measured in Webers (Wb).






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






7. An almost massless particle of neutral charge that is released along with a beta particle in beta decay.






8. A collision in which the colliding particles stick together.






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






10. The force involved in beta decay that changes a proton to a neutron and releases an electron and a neutrino.






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






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






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






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






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






16. The application of kinematics to understand why objects move the way they do. More precisely - dynamics is the study of how forces cause motion.






17. An area of high air pressure that acts as the wave trough for sound waves. The spacing between successive rarefactions is the wavelength of sound - and the number of successive areas of rarefaction that arrive at the ear per second is the frequency -






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






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






20. The force between two surfaces moving relative to one another. The frictional force is parallel to the plane of contact between the two objects and in the opposite direction of the sliding object's motion.






21. A form of radioactive decay where a heavy element ejects a beta particle and a neutrino - becoming a lighter element in the process.






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






23. 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.






24. A scalar quantity. If an object is moved from point A to point B in space along path AB - the distance that the object has traveled is the length of the path AB. Distance is to be contrasted with displacement - which is simply a measure of the distan






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






26. 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






27. 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.






28. 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.






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






30. 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.






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






32. The building blocks of all matter - quarks are the constituent parts of protons - neutrons - and mesons.






33. An image created by a mirror or lens in such a way that light does not actually come from where the image appears to be.






34. 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






35. A property common to both vectors and scalars. In the graphical representation of a vector - the vector's magnitude is equal to the length of the arrow.






36. 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.






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






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






39. Heat transfer via electromagnetic waves.






40. The path of each planet around the sun is an ellipse with the sun at one focus.

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






42. In an interference or diffraction pattern - the places where there is the least light.






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






44. Heat transfer by molecular collisions.






45. 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.






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

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47. 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.






48. 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.






49. A small particle-like bundle of electromagnetic radiation.






50. A body or set of bodies that we choose to analyze as a group.







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