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






2. 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






3. 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 -






4. 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.






5. 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.






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






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






8. A particle - which consists of two protons and two neutrons. It is identical to the nucleus of a helium atom and is ejected by heavy particles undergoing alpha decay.






9. 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.






10. 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.






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






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






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






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






15. 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






16. The standing wave with the lowest frequency that is supported by a string with both ends tied down is called the fundamental - or resonance - of the string. The wavelength of the fundamental is twice the length of the string - .






17. 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.






18. 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.






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






20. 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






21. 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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22. 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.






23. For a gas held at constant pressure - temperature and volume are directly proportional.

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24. A measurement of a body's inertia - or resistance to being accelerated.






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






26. The force of gravity - F - between two particles of mass and - separated by a distance r - has a magnitude of - where G is the gravitational constant. The force is directed along the line joining the two particles.

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






28. A vector quantity - commonly denoted by the vector s - which reflects an object's change in spatial position. The displacement vector points from the object's starting position to the object's current position in space. If an object is moved from poi






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






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






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






32. 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






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






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






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






36. The amount of heat necessary to transform a liquid at a given temperature into a gas of the same temperature - or the amount of heat needed to be taken away from a gas of a given temperature to transform it into a liquid of the same temperature.






37. 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.






38. 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.






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

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






41. 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






42. A collision in which both kinetic energy and momentum are conserved.






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






44. The coefficient of kinetic friction - - for two materials is the constant of proportionality between the normal force and the force of kinetic friction. It is always a number between zero and one.






45. 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






46. 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.






47. Atoms of the same element may have different numbers of neutrons and therefore different masses. Atoms of the same element but with different numbers of neutrons are called isotopes of the same element.






48. An object cannot be cooled to absolute zero.






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






50. 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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