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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. 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).






2. A wavelength - given by = h/mv - which is associated with matter. Louis de Broglie proposed the idea that matter could be treated as waves in 1923 and applied this theory successfully to small particles like electrons.






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






4. A transfer of thermal energy. We don't speak about systems "having" heat - but about their "transferring" heat - much in the way that dynamical systems don't "have" work - but rather "do" work.






5. 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.






6. The mass number - A - is the sum of the number of protons and neutrons in a nucleus. It is very close to the weight of that nucleus in atomic mass units.






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






8. The temperature at which a material will change phase from liquid to gas or gas to liquid.






9. The effect of force on rotational motion.






10. 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.






11. An experiment by Ernest Rutherford that proved for the first time that atoms have nuclei.






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






13. The angle between a reflected ray and the normal.






14. Energy cannot be made or destroyed; energy can only be changed from one place to another or from one form to another.






15. Occurs when every point in the rigid body moves in a circular path around a line called the axis of rotation.






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. The principle stating that for any isolated system - linear momentum is constant with time.






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






19. A positively charged particle that - along with the neutron - occupies the nucleus of the atom.






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






21. Heat transfer via the mass movement of molecules.






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






23. A wave that interferes with its own reflection so as to produce oscillations which stand still - rather than traveling down the length of the medium. Standing waves on a string with both ends tied down make up the harmonic series.






24. If a line is drawn from the sun to the planet - then the area swept out by this line in a given time interval is constant.

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25. 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.






26. 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.






27. 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






28. 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.






29. 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.






30. 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.






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






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






33. 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.






34. A machine that operates by taking heat from a hot place - doing some work with that heat - and then exhausting the rest of the heat into a cool place. The internal combustion engine of a car is an example of a heat engine.






35. 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






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






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






38. 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.






39. The energy of the molecules that make up an object. It is related to heat - which is the amount of energy transferred from one object to another object that is a different temperature.






40. 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






41. The force transmitted along a rope or cable.






42. 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 -






43. Done when energy is transferred by a force. The work done by a force F in displacing an object by s is W = F · s.






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






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






46. 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






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






48. The separation of different color light via refraction.






49. 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






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







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