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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 push or a pull that causes an object to accelerate.






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






3. If the net torque acting on a rigid body is zero - then the angular momentum of the body is constant or conserved.






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






5. A property common to both vectors and scalars. In the graphical representation of a vector - the vector's magnitude is equal to the length of the arrow.






6. A scale for measuring temperature - defined such that water freezes at 0ºC and boils at 100ºC. 0ºC = 273 K.






7. 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.






8. A scale for measuring temperature - defined such that 0K is the lowest theoretical temperature a material can have. 273K = 0ºC.






9. 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






10. A number - Z - associated with the number of protons in the nucleus of an atom. Every element can be defined in s of its atomic number - since every atom of a given element has the same number of protons.






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






12. The amount of heat necessary for a material undergoing sublimation to make a phase change from gas to solid or solid to gas - without a change in temperature.






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

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14. A force caused by the roughness of two materials in contact - deformations in the materials - and a molecular attraction between the materials. Frictional forces are always parallel to the plane of contact between two surfaces and opposite the direct






15. When objects collide - each object feels a force for a short amount of time. This force imparts an impulse - or changes the momentum of each of the colliding objects. The momentum of a system is conserved in all kinds of collisions. Kinetic energy is






16. A coefficient that tells how much a material will expand or contract lengthwise when it is heated or cooled.






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






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






19. The disorder of a system.






20. 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






21. 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






22. 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.






23. The line perpendicular to a surface. There is only one normal for any given surface.






24. The gravitational force exerted on a given mass.






25. Heat transfer via the mass movement of molecules.






26. 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






27. The motion of a body in a circular path with constant speed.






28. A vector quantity - L - that is the rotational analogue of linear momentum. For a single particle - the angular momentum is the cross product of the particle's displacement from the axis of rotation and the particle's linear momentum - . For a rigid






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






30. 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.






31. 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






32. 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.






33. 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.






34. Energy associated with an object's position in space - or configuration in relation to other objects. This is a latent form of energy - where the amount of potential energy reflects the amount of energy that potentially could be released as kinetic e






35. The point of a mirror or lens where all light that runs parallel to the principal axis will be focused. Concave mirrors and convex lenses are designed to focus light into the focal point. Convex mirrors and concave lenses focus light away from the fo






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

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37. 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.






38. 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.






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






40. The coefficient of static friction - for two materials is the constant of proportionality between the normal force and the maximum force of static friction. It is always a number between zero and one.






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






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

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






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






45. Life- The amount of time it takes for one-half of a radioactive sample to decay.






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






47. A property of a metal - the minimum frequency of electromagnetic radiation that is necessary to release photoelectrons from that metal.






48. The movement of a rigid body's center of mass in space.






49. 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






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

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