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






2. 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.






3. 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






4. The center of an atom - where the protons and neutrons reside. Electrons then orbit this nucleus.






5. For a heat engine - the ratio of work done by the engine to heat intake. Efficiency is never 100%.






6. 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






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






8. In the graphical representation of vectors - the tip of the arrow is the pointy end.






9. An object is called radioactive if it undergoes radioactive decay.






10. The center of a mirror or lens.






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






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






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






14. 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.






15. An electromagnetic wave of very high frequency.






16. The process by which unstable nuclei spontaneously release particles and/or energy so as to come to a more stable arrangement. The most common forms of radioactive decay are alpha decay - beta decay - and gamma decay.






17. A force caused by the roughness of two materials in contact - deformations in the materials - and a molecular attraction between the materials. Frictional forces are always parallel to the plane of contact between two surfaces and opposite the direct






18. 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






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






20. 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.






21. The separation of different color light via refraction.






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






23. 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).






24. 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.






25. A unit vector is a vector with length 1.






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






27. A system with many parts in periodic - or repetitive - motion. The oscillations in one part cause vibrations in nearby parts.






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






29. The net change - - in a point's angular position - . It is a scalar quantity.






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






31. 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.






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






33. A scalar quantity that tells us how fast an object is moving. It measures the rate of change in distance over time. Speed is to be contrasted with velocity in that there is no direction associated with speed.






34. A device that converts mechanical energy to electrical energy by rotating a coil in a magnetic field; sometimes called a "dynamo."






35. 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.






36. 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).






37. The acceleration of a body experiencing uniform circular motion. This acceleration is always directed toward the center of the circle.






38. A pulley is a simple machine that consists of a rope that slides around a disk or block.






39. The cancellation of one wave by another wave that is exactly out of phase with the first. Despite the dramatic name of this phenomenon - nothing is "destroyed" by this interference—the two waves emerge intact once they have passed each other.






40. The bending of light at the corners of objects or as it passes through narrow slits or apertures.






41. A system that no external net force acts upon. Objects within the system may exert forces upon one another - but they cannot receive any impulse from outside forces. Momentum is conserved in isolated systems.






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






43. The gravitational force exerted on a given mass.






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






45. 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






46. 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.






47. A transfer of thermal energy from one system to another.






48. 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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49. 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.






50. In a right triangle - the tangent of a given angle is the length of the side opposite the angle divided by the length of the side adjacent to the triangle.







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