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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 vector quantity defined as the product of the force acting on a body multiplied by the time interval over which the force is exerted.






2. Relates the angle of incidence to the angle of refraction: .

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3. 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






4. The force that causes simple harmonic motion. The restoring force is always directed toward an object's equilibrium position.






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






6. The amount heat necessary to cause a substance to undergo a phase transition.






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






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






9. 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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10. 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.






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






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






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






14. 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.






15. 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.






16. 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.






17. 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.






18. 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.






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






20. The name of an electron released from the surface of a metal due to the photoelectric effect.






21. 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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22. 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.






23. The acceleration of a body experiencing uniform circular motion. This acceleration is always directed toward the center of the circle.






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

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25. An image created by a mirror or lens in such a way that light does not actually come from where the image appears to be.






26. The force between two surfaces that are not moving relative to one another. The force of static friction is parallel to the plane of contact between the two objects and resists the force pushing or pulling on the object.






27. When two waves of slightly different frequencies interfere with one another - they produce a "beating" interference pattern that alternates between constructive (in-phase) and destructive (out-of-phase). In the case of sound waves - this sort of inte






28. In the graphical representation of vectors - the tip of the arrow is the pointy end.






29. Two materials are in thermal equilibrium if they are at the same temperature.






30. A means of defining the direction of the cross product vector. To define the direction of the vector - position your right hand so that your fingers point in the direction of A - and then curl them around so that they point in the direction of B. Th






31. The number - N - of neutrons in an atomic nucleus.






32. 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.






33. In a right triangle - the tangent of a given angle is the length of the side opposite the angle divided by the length of the side adjacent to the triangle.






34. 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.






35. 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.






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






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






38. 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.






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






40. With spherical mirrors - the center of the sphere of which the mirror is a part. All of the normals pass through it.






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






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

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43. The angle between a refracted ray and the line normal to the surface.






44. 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.






45. For a reflected light ray - . In other words - a ray of light reflects of a surface in the same plane as the incident ray and the normal - and at an angle to the normal that is equal to the angle between the incident ray and the normal.






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






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






48. The property of a vector that distinguishes it from a scalar: while scalars have only a magnitude - vectors have both a magnitude and a direction. When graphing vectors in the xy-coordinate space - direction is usually given by the angle measured cou






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

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






Can you answer 50 questions in 15 minutes?



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