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Test your basic knowledge |
SAT Subject Test: hysics
Start Test
Study First
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. An object cannot be cooled to absolute zero.
Elastic collision
Coherent light
Third Law of Thermodynamics
Compression
2. An object that moves about a stable equilibrium point and experiences a restoring force that is directly proportional to the oscillator's displacement.
Electromagnetic induction
Simple harmonic oscillator
Transformer
Wave
3. 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.
Pulley
Unit vector
Uncertainty principle
Destructive interference
4. 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.
Weightlessness
Destructive interference
Thermal energy
Calorie
5. 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
Planck's constant
Angular momentum
Latent heat of vaporization
Direction
6. 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 -
Compression
Angle of incidence
Electron
Coefficient of volume expansion
7. 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.
Coefficient of linear expansion
Fundamental
Transverse waves
Calorie
8. The temperature at which a material will change phase from solid to liquid or liquid to solid.
Distance
Reflection
Melting point
Isotope
9. 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.
Isotope
Significant digits
Efficiency
Loudness
10. A coefficient that tells how much a material will expand or contract lengthwise when it is heated or cooled.
Coefficient of linear expansion
Tip
Antinode
Vertex
11. 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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12. A body or set of bodies that we choose to analyze as a group.
Principal axis
Scalar
System
Standing wave
13. The process by which a solid turns directly into gas - because it cannot exist as a liquid at a certain pressure.
Kepler's Second Law
Angle of reflection
Sublimation
Weightlessness
14. Heat transfer via electromagnetic waves.
Radiation
Conservation of Angular Momentum
Margin of error
Ideal gas law
15. 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
Refraction
Angular position
Polarization
Kinetic theory of gases
16. 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.
Electron
Total internal reflection
Significant digits
Elastic collision
17. 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.
Loudness
Third Law of Thermodynamics
Alpha particle
Translational kinetic energy
18. 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
Electromagnetic induction
Right-hand rule
Maxima
Wavelength
19. 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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20. 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
Focal point
Latent heat of vaporization
Chain reaction
Oscillation
21. The acceleration of a body experiencing uniform circular motion. This acceleration is always directed toward the center of the circle.
Fundamental
Activity
Centripetal acceleration
Standing wave
22. Indicates how "bouncy" or "stiff" a spring is. More specifically - the spring constant - k - is the constant of proportionality between the restoring force exerted by the spring - and the spring's displacement from equilibrium. The greater the value
Spring constant
Completely inelastic collision
Inclined plane
Significant digits
23. 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
Wavelength
Calorie
Planck's constant
Inversely proportional
24. The standing wave with the lowest frequency that is supported by a string with both ends tied down is called the fundamental - or resonance - of the string. The wavelength of the fundamental is twice the length of the string - .
Fundamental
Kepler's First Law
Rotational motion
Orbit
25. 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
Second Law of Thermodynamics
Strong nuclear force
Work
Energy
26. The amount of heat needed to raise the temperature of one gram of water by one degree Celsius. 1 cal = 4.19 J.
Efficiency
Gravitational constant
Inertial reference frame
Calorie
27. The center of an atom - where the protons and neutrons reside. Electrons then orbit this nucleus.
Directly proportional
Nucleus
Decibel
Restoring force
28. A scale for measuring temperature - defined such that water freezes at 0ºC and boils at 100ºC. 0ºC = 273 K.
Celsius
Wavelength
De Broglie wavelength
Angular position
29. A process that aligns a wave of light to oscillate in one dimension rather than two.
Isolated system
Pulley
Reflected ray
Polarization
30. An object is called radioactive if it undergoes radioactive decay.
Rigid body
Radioactivity
Latent heat of fusion
Neutrino
31. 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.
Cosine
Basis vector
Node
Proton
32. Also called a converging lens - a lens that is thicker in the middle than at the edges. Convex lenses refract light through a focal point.
Convex lens
Neutron number
Standing wave
Velocity
33. A vector quantity - - that reflects the change of angular displacement with time - and is typically given in units of rad/s. To find the direction of the angular velocity vector - take your right hand and curl your fingers along the particle or body
Torque
Antinode
Angular velocity
Optics
34. 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.
Ideal gas law
Incident ray
Gravitational constant
Entropy
35. The joule (J) is the unit of work and energy. A joule is 1 N · m or 1 kg · m2/s2.
Joule
Static friction
Center of mass
Power
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.
Third Law of Thermodynamics
Total internal reflection
Kinetic friction
Angle of incidence
37. 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.
Rarefaction
Electric generator
Universal gas constant
Isolated system
38. For a gas held at constant pressure - temperature and volume are directly proportional.
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39. 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
Third Law of Thermodynamics
Photon
Maxima
Potential energy
40. A form of radioactivity where an excited atom releases a photon of gamma radiation - thereby returning to a lower energy state. The atomic structure itself does not change in the course of gamma radiation.
Gamma decay
Inclined plane
Calorie
Coefficient of volume expansion
41. The force involved in beta decay that changes a proton to a neutron and releases an electron and a neutrino.
Refraction
Angle of incidence
Weak nuclear force
Beta particle
42. A property of a metal - the minimum frequency of electromagnetic radiation that is necessary to release photoelectrons from that metal.
Threshold frequency
Minima
Third Law of Thermodynamics
Meson
43. 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
Boiling point
Chain reaction
Angular acceleration
Restoring force
44. The amplification of one wave by another - identical wave of the same sign. Two constructively interfering waves are said to be "in phase."
Pendulum
Mutual Induction
Beats
Constructive interference
45. With spherical mirrors - the radius of the sphere of which the mirror is a part.
Planck's constant
Radius of curvature
Center of curvature
Simple harmonic oscillator
46. The time - T - required for a rigid body to complete one revolution.
Angular period
Inertial reference frame
Kinetic energy
Tension force
47. An almost massless particle of neutral charge that is released along with a beta particle in beta decay.
Boiling point
Neutrino
Lenz's Law
Pendulum
48. The substance that is displaced as a wave propagates through it. Air is the medium for sound waves - the string is the medium of transverse waves on a string - and water is the medium for ocean waves. Note that even if the waves in a given medium tra
Real image
Coefficient of linear expansion
Kepler's Second Law
Medium
49. The property by which a charge moving in a magnetic field creates an electric field.
Electromagnetic induction
Oscillation
Zeroth Law of Thermodynamics
Period
50. A system with many parts in periodic - or repetitive - motion. The oscillations in one part cause vibrations in nearby parts.
Potential energy
Wave
Meson
Amplitude