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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 rigid body's resistance to being rotated. The moment of inertia for a single particle is MR2 - where M is the mass of the rigid body and R is the distance to the rotation axis. For rigid bodies - calculating the moment of inertia is more complicate






2. 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.






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






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

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5. When a light ray strikes a surface - the angle of incidence is the angle between the incident ray and the normal.






6. 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






7. 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.






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






9. 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.






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






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






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






13. The amount of energy that metal must absorb before it can release a photoelectron from the metal.






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






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






16. 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.






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






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






19. The amount of heat needed to raise the temperature of one gram of water by one degree Celsius. 1 cal = 4.19 J.






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






21. Heat transfer via electromagnetic waves.






22. The energy stored in a thermodynamic system.






23. 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.






24. 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.






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






26. 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.






27. A quantity that possesses a magnitude but not a direction. Mass and length are common examples.






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






29. The force of gravity - F - between two particles of mass and - separated by a distance r - has a magnitude of - where G is the gravitational constant. The force is directed along the line joining the two particles.

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30. 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






31. 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).






32. An object cannot be cooled to absolute zero.






33. The points of maximum negative displacement along a wave. They are the opposite of wave crests.






34. 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






35. With spherical mirrors - the radius of the sphere of which the mirror is a part.






36. The force between two surfaces moving relative to one another. The frictional force is parallel to the plane of contact between the two objects and in the opposite direction of the sliding object's motion.






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






38. 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.






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






40. The property by which a charge moving in a magnetic field creates an electric field.






41. Given the period - T - and semimajor axis - a - of a planet's orbit - the ratio is the same for every planet.

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42. A class of elementary particle whose mass is between that of a proton and that of an electron. A common kind of meson is the pion.






43. The experience of being in free fall. If you are in a satellite - elevator - or other free-falling object - then you have a weight of zero Newtons relative to that object.






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






45. 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.






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






47. A form of radioactive decay where a heavy element ejects a beta particle and a neutrino - becoming a lighter element in the process.






48. To every action - there is an equal and opposite reaction. If an object A exerts a force on another object B - B will exert on A a force equal in magnitude and opposite in direction to the force exerted by A.

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






50. The stable position of a system where the net force acting on the object is zero.







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