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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 amplification of one wave by another - identical wave of the same sign. Two constructively interfering waves are said to be "in phase."






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






3. F = ma. The net force - F - acting on an object causes the object to accelerate - a. The magnitude of the acceleration is directly proportional to the net force on the object and inversely proportional to the mass - m - of the object.

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

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5. The energy stored in a thermodynamic system.






6. 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.






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






8. A unit of measurement for energy on atomic levels. 1 eV = J.






9. 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 - .






10. Energy associated with an object's position in space - or configuration in relation to other objects. This is a latent form of energy - where the amount of potential energy reflects the amount of energy that potentially could be released as kinetic e






11. 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.






12. A coefficient that tells how much a material will expand or contract lengthwise when it is heated or cooled.






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






14. Objects that experience oscillatory or simple harmonic motion when distorted. Their motion is described by Hooke's Law.






15. The point of a mirror or lens where all light that runs parallel to the principal axis will be focused. Concave mirrors and convex lenses are designed to focus light into the focal point. Convex mirrors and concave lenses focus light away from the fo






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






17. A mirror that is curved such that its center is closer to the viewer than the edges - such as a doorknob. Convex mirrors reflect light away from a focal point.






18. 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).






19. 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






20. The amount of heat necessary to transform a solid at a given temperature into a liquid of the same temperature - or the amount of heat needed to be removed from a liquid of a given temperature to transform it into a solid of the same temperature.






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






22. 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.






23. 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






24. The force that causes simple harmonic motion. The restoring force is always directed toward an object's equilibrium position.






25. 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 .






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

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






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






29. 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






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






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






32. A vector quantity defined as the product of the force acting on a body multiplied by the time interval over which the force is exerted.






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






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






35. 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.






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






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






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






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






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






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






42. 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.






43. Waves that oscillate in the same direction as the propagation of the wave. Sound is carried by longitudinal waves - since the air molecules move back and forth in the same direction the sound travels.






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






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






46. A rough approximation of how gases work - that is quite accurate in everyday conditions. According to the kinetic theory - gases are made up of tiny - round molecules that move about in accordance with Newton's Laws - and collide with one another and






47. 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 -






48. A principle derived by Werner Heisenberg in 1927 that tells us that we can never know both the position and the momentum of a particle at any given time.






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






50. 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.







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