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






2. The effect of force on rotational motion.






3. The position - of an object according to a co-ordinate system measured in s of the angle of the object from a certain origin axis. Conventionally - this origin axis is the positive x-axis.






4. 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.






5. Two oscillators that have the same frequency and amplitude - but reach their maximum displacements at different times - are said to have different phases. Similarly - two waves are in phase if their crests and troughs line up exactly - and they are o






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






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






8. A measurement of a body's inertia - or resistance to being accelerated.






9. 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 .






10. The distance between successive wave crests - or troughs. Wavelength is measured in meters and is related to frequency and wave speed by = v/f.






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






12. Two quantities are inversely proportional if an increase in one results in a proportional decrease in the other - and a decrease in one results in a proportional increase in the other. In a formula defining a certain quantity - those quantities to wh






13. Heat transfer via the mass movement of molecules.






14. The process by which a solid turns directly into gas - because it cannot exist as a liquid at a certain pressure.






15. 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






16. 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.






17. 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.






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






19. The number of cycles executed by a system in one second. Frequency is the inverse of period - f = 1/T. Frequency is measured in hertz - Hz.






20. A wave with wave crests that propagate down the length of the medium - in contrast to stationary standing waves. The velocity at which a crest propagates is called the wave speed.






21. A small particle-like bundle of electromagnetic radiation.






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






23. 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.






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






25. 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.






26. There are a few versions of this law. One is that heat flows spontaneously from hot to cold - but not in the reverse direction. Another is that there is no such thing as a 100% efficient heat engine. A third states that the entropy - or disorder - of






27. 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.






28. 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 -






29. 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.






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






31. For two given media - the smallest angle of incidence at which total internal reflection occurs.






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






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

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34. The phenomenon by which light traveling from a high n to a low n material will reflect from the optical interface if the incident angle is greater than the critical angle.






35. The number of digits that have been accurately measured. When combining several measurements in a formula - the resulting calculation can only have as many significant digits as the measurement that has the smallest number of significant digits.






36. 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






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






38. 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.






39. The cosine of an angle in a right triangle is equal to the length of the side adjacent to the angle divided by the length of the hypotenuse.






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

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41. 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






42. A logorithmic unit for measuring the volume of sound - which is the square of the amplitude of sound waves.






43. The building blocks of all matter - atoms are made up of a nucleus consisting of protons and neutrons - and a number of electrons that orbit the nucleus. An electrically neutral atom has as many protons as it has electrons.






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






45. 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.






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






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






48. 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.






49. 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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50. For a gas held at a constant temperature - pressure and volume are inversely proportional.

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Can you answer 50 questions in 15 minutes?



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