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






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






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






4. When a solid - liquid - or gas changes into another phase of matter.






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






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






7. The mass difference between a nucleus and the sum of the masses of the constituent protons and neutrons.






8. 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.






9. 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.






10. 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.






11. 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.






12. A law - || = - which states that the induced emf is the change in magnetic flux in a certain time.

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13. A pulley is a simple machine that consists of a rope that slides around a disk or block.






14. A nuclear reaction that takes place only at very high temperatures. Two light atoms - often hydrogen - fuse together to form a larger single atom - releasing a vast amount of energy in the process.






15. 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.






16. 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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17. A scalar quantity that tells us how fast an object is moving. It measures the rate of change in distance over time. Speed is to be contrasted with velocity in that there is no direction associated with speed.






18. 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.






19. An object cannot be cooled to absolute zero.






20. 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.






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






22. Waves carried by variations in air pressure. The speed of sound waves in air at room temperature and pressure is roughly 343 m/s.






23. 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 -






24. A push or a pull that causes an object to accelerate.






25. In the graphical representation of vectors - the tail of the arrow is the blunt end (the end without a point).






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






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






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






29. Given the trajectory of an object or system - the center of mass is the point that has the same acceleration as the object or system as a whole would have if its mass were concentrated at that point. In terms of force - the center of mass is the poin






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






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






32. A device that breaks incoming light down into spectral rays - so that one can see the exact wavelength constituents of the light.






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






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 two shorter sides of a right triangle that meet at the right angle.






36. A vector of magnitude 1 along one of the coordinate axes. Generally - we take the basis vectors to be and - the vectors of length 1 along the x- and y-axes - respectively.






37. 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






38. 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






39. The sum of a system's potential and kinetic energy. In many systems - including projectiles - pulleys - pendulums - and motion on frictionless surfaces - mechanical energy is conserved. One important type of problem in which mechanical energy is not






40. An almost massless particle of neutral charge that is released along with a beta particle in beta decay.






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






42. A vector quantity - equal to the rate of change of the angular velocity vector with time. It is typically given in units of rad/s2.






43. 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.






44. If two systems - A and B - are in thermal equilibrium and if B and C are also in thermal equilibrium - then systems A and C are necessarily in thermal equilibrium.






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






46. The force transmitted along a rope or cable.






47. States that the net work done on an object is equal to the object's change in kinetic energy.






48. States that the current induced in a circuit by a change in magnetic flux is in the direction that will oppose that change in flux. Using the right-hand rule - point your thumb in the opposite direction of the change in magnetic flux. The direction y

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49. 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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50. Heat transfer by molecular collisions.