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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 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.






2. A frequency - f - defined as the number of revolutions a rigid body makes in a given time interval. It is a scalar quantity commonly denoted in units of Hertz (Hz) or s-1.






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






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






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






6. Any vector can be expressed as the sum of two mutually perpendicular component vectors. Usually - but not always - these components are multiples of the basis vectors - and ; that is - vectors along the x-axis and y-axis. We define these two vectors






7. Linear momentum - p - commonly called "momentum" for short - is a vector quantity defined as the product of an object's mass - m - and its velocity - v.






8. The building blocks of all matter - atoms are made up of a nucleus consisting of protons and neutrons - and a number of electrons that orbit the nucleus. An electrically neutral atom has as many protons as it has electrons.






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






10. 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






11. 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.






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






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






14. The center of a mirror or lens.






15. The process by which a gas turns directly into a solid because it cannot exist as a liquid at certain pressures.






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






17. The reaction force of the ground - a table - etc. - when an object is placed upon it. The normal force is a direct consequence of Newton's Third Law: when an object is placed on the ground - the ground pushes back with the same force that it is pushe






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






19. The distance between the focal point and the vertex of a mirror or lens. For concave mirrors and convex lenses - this number is positive. For convex mirrors and concave lenses - this number is negative.






20. 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 -






21. 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.






22. Heat transfer via the mass movement of molecules.






23. 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






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






25. 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






26. 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.






27. 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.






28. A wave on a string that is tied to a pole at one end will reflect back toward its source - producing a wave that is the mirror-image of the original and which travels in the opposite direction.






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






30. 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






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






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. 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.






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






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






36. 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.






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

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38. A form of vector multiplication - where two vectors are multiplied to produce a scalar. The dot product of two vectors - A and B - is expressed by the equation A · B = AB cos .






39. 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






40. The effect of force on rotational motion.






41. 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






42. 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.






43. 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






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






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






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






47. The gravitational force exerted on a given mass.






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

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






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






Can you answer 50 questions in 15 minutes?



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