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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 wedge or a slide. The dynamics of objects sliding down inclined planes is a popular topic on SAT II Physics.






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






4. The center of a mirror or lens.






5. 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 .






6. A number - Z - associated with the number of protons in the nucleus of an atom. Every element can be defined in s of its atomic number - since every atom of a given element has the same number of protons.






7. The force transmitted along a rope or cable.






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






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






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






11. 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.






12. The two shorter sides of a right triangle that meet at the right angle.






13. 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.






14. 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.






15. A device made of two coils - which converts current of one voltage into current of another voltage. In a step-up transformer - the primary coil has fewer turns than the secondary - thus increasing the voltage. In a step-down transformer - the seconda






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






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






18. 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 -






19. The line perpendicular to a surface. There is only one normal for any given surface.






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






21. The time it takes a system to pass through one cycle of its repetitive motion. The period - T - is the inverse of the motion's frequency - f = 1/T.






22. A transverse traveling wave created by the oscillations of an electric field and a magnetic field. Electromagnetic waves travel at the speed of light - m/s. Examples include microwaves - X rays - and visible light.






23. In oscillation - a cycle occurs when an object undergoing oscillatory motion completes a "round-trip." For instance - a pendulum bob released at angle has completed one cycle when it swings to and then back to again. In period motion - a cycle is the






24. A negatively charged particle that orbits the nucleus of the atom.






25. The state of a nonrotating object upon whom the net torque acting is zero.






26. 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






27. 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.






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






29. For an oscillating spring - the restoring force exerted by the spring is directly proportional to the displacement. That is - the more the spring is displaced - the stronger the force that will pull toward the equilibrium position. This law is expres

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30. 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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31. An object cannot be cooled to absolute zero.






32. 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.






33. An object that retains its overall shape - meaning that the particles that make up the rigid body stay in the same position relative to one another.






34. 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.






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






36. 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.






37. 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.






38. 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.






39. The particles and energy released by the fission or fusion of one atom may trigger the fission or fusion of further atoms. In a chain reaction - fission or fusion is rapidly transferred to a large number of atoms - releasing tremendous amounts of ene






40. A property of a metal - the minimum frequency of electromagnetic radiation that is necessary to release photoelectrons from that metal.






41. 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






42. 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






43. The straight line that runs through the focal point and the vertex of a mirror or lens.






44. Also called a converging lens - a lens that is thicker in the middle than at the edges. Convex lenses refract light through a focal point.






45. 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.






46. 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






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






48. The study of the properties of visible light - i.e. - the portion of the electromagnetic spectrum with wavelengths between 360 and 780 nm (1 nm = m/s).






49. 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






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







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