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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 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






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






3. The temperature at which a material will change phase from solid to liquid or liquid to solid.






4. The unit for measuring pressure. One Pascal is equal to one Newton per meter squared - 1 Pa = 1 N/m2.






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

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6. The longest side of a right triangle - opposite to the right angle.






7. 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.






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






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

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10. Light such that all of the associated waves have the same wavelength and are in phase.






11. 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 .






12. 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.






13. 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.






14. The time - T - required for a rigid body to complete one revolution.






15. The constant of proportionality in Newton's Law of Gravitation. It reflects the proportion of the gravitational force and - the product of two particles' masses divided by the square of the bodies' separation. N · m2/kg2.






16. 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.






17. 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






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 - equal to the rate of change of the angular velocity vector with time. It is typically given in units of rad/s2.






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






21. States that the current induced in a circuit by a change in magnetic flux is in the direction that will oppose that change in flux. Using the right-hand rule - point your thumb in the opposite direction of the change in magnetic flux. The direction y

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22. The ray of light that is refracted through a surface into a different medium.






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






24. 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.






25. 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.






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






27. An electromagnetic wave of very high frequency.






28. The points on a standing wave where total destructive interference causes the medium to remain fixed at its equilibrium position.






29. 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.






30. The force necessary to maintain a body in uniform circular motion. This force is always directed radially toward the center of the circle.






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






32. A mirror that is curved such that its center is farther from the viewer than the edges - such as the front of a spoon. Concave mirrors reflect light through a focal point.






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






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






35. The effect of force on rotational motion.






36. 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.






37. 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 -






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






39. 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.






40. 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






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






42. Represented by R = 8.31 J/mol · K - the universal gas constant fits into the ideal gas law so as to relate temperature to the average kinetic energy of gas molecules.






43. 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.






44. The series of standing waves supported by a string with both ends tied down. The first member of the series - called the fundamental - has two nodes at the ends and one anti-node in the middle. The higher harmonics are generated by placing an integra






45. 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.






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






47. The velocity at any given instant in time. To be contrasted with average velocity - which is a measure of the change in displacement over a given time interval.






48. A vector quantity - or vector - is an object possessing - and fully described by - a magnitude and a direction. Graphically a vector is depicted as an arrow with its magnitude given by the length of the arrow and its direction given by where the arro






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






50. 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).