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Test your basic knowledge |
SAT Subject Test: hysics
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Subjects
:
sat
,
science
,
physics
Instructions:
Answer 50 questions in 15 minutes.
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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. For two given media - the smallest angle of incidence at which total internal reflection occurs.
Critical angle
Joule
Ideal gas law
Radioactive decay
2. 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.
Threshold frequency
Speed
Neutron number
Sound
3. Waves carried by variations in air pressure. The speed of sound waves in air at room temperature and pressure is roughly 343 m/s.
Sound
Temperature
Universal gas constant
Focal point
4. For a gas held at constant pressure - temperature and volume are directly proportional.
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5. When dealing with reflection or refraction - the incident ray is the ray of light before it strikes the reflecting or refracting surface.
Concave lens
Conduction
Centripetal acceleration
Incident ray
6. The building blocks of all matter - atoms are made up of a nucleus consisting of protons and neutrons - and a number of electrons that orbit the nucleus. An electrically neutral atom has as many protons as it has electrons.
Kinematics
Sine
Atom
Photoelectron
7. The points of maximum negative displacement along a wave. They are the opposite of wave crests.
Celsius
Trough
Rigid body
Translational kinetic energy
8. A measurement of a body's inertia - or resistance to being accelerated.
Second Law of Thermodynamics
Mass
Cross product
Normal force
9. The index of refraction n = c/v of a substance characterizes the speed of light in that substance - v. It also characterizes - by way of Snell's Law - the angle at which light refracts in that substance.
Chain reaction
Real image
Index of refraction
Torque
10. A transfer of thermal energy. We don't speak about systems "having" heat - but about their "transferring" heat - much in the way that dynamical systems don't "have" work - but rather "do" work.
Wave
Maxima
Heat
Destructive interference
11. 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.
Focal point
Strong nuclear force
Zeroth Law of Thermodynamics
Kelvin
12. The force necessary to maintain a body in uniform circular motion. This force is always directed radially toward the center of the circle.
Doppler shift
Centripetal force
Focal length
Heat engine
13. 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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14. A model for the atom developed in 1913 by Niels Bohr. According to this model - the electrons orbiting a nucleus can only orbit at certain particular radii. Excited electrons may jump to a more distant radii and then return to their ground state - em
Real image
Beta decay
Bohr atomic model
Angular displacement
15. For an oscillating spring - the restoring force exerted by the spring is directly proportional to the displacement. That is - the more the spring is displaced - the stronger the force that will pull toward the equilibrium position. This law is expres
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16. A quantity that possesses a magnitude but not a direction. Mass and length are common examples.
Scalar
Latent heat of transformation
Neutron number
Radiation
17. 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.
Hertz (Hz)
Nuclear fusion
Harmonic series
Reflected ray
18. Kinematics is the study and description of the motion of objects.
Weber
Mass
Isotope
Kinematics
19. Heat transfer via electromagnetic waves.
Radiation
Nuclear fusion
Unit vector
Reflection
20. 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.
Universal gas constant
Collision
Direction
Free
21. The energy stored in a thermodynamic system.
Internal energy
Nucleus
Photon
Weightlessness
22. Done when energy is transferred by a force. The work done by a force F in displacing an object by s is W = F · s.
Trough
Fundamental
Work
Internal energy
23. In an interference or diffraction pattern - the places where there is the least light.
Atom
Doppler shift
Reflection
Minima
24. A law - || = - which states that the induced emf is the change in magnetic flux in a certain time.
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25. 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.
Critical angle
Latent heat of sublimation
Angle of incidence
Moment of inertia
26. A constant - J · s - which is useful in quantum physics. A second constant associated with Planck's constant is .
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27. 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.
Newton's First Law
Significant digits
Zeroth Law of Thermodynamics
Universal gas constant
28. 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
Normal force
Inversely proportional
Pressure
Angular frequency
29. An area of high air pressure that acts as the wave trough for sound waves. The spacing between successive rarefactions is the wavelength of sound - and the number of successive areas of rarefaction that arrive at the ear per second is the frequency -
Rotational kinetic energy
Rarefaction
Normal
Weak nuclear force
30. A form of radioactive decay where a heavy element emits an alpha particle and some energy - thus transforming into a lighter - more stable - element.
Law of conservation of energy
Alpha decay
Entropy
Atom
31. The points of maximum displacement along a wave. In traveling waves - the crests move in the direction of propagation of the wave. The crests of standing waves - also called anti-nodes - remain in one place.
Angular momentum
Conduction
Crest
Displacement
32. A measure of force per unit area. Pressure is measured in N/m2 or Pa.
Work
Pressure
Centripetal acceleration
Centripetal force
33. A wave that interferes with its own reflection so as to produce oscillations which stand still - rather than traveling down the length of the medium. Standing waves on a string with both ends tied down make up the harmonic series.
Radioactive decay
Convex mirror
Gravitational constant
Standing wave
34. The force involved in beta decay that changes a proton to a neutron and releases an electron and a neutrino.
Diffraction
Decay constant
Weak nuclear force
Total internal reflection
35. The process by which a gas turns directly into a solid because it cannot exist as a liquid at certain pressures.
Deposition
Kepler's Third Law
Weight
Newton
36. In the Bohr model of the atom - the state in which an electron has the least energy and orbits closest to the nucleus.
Ground state
Inelastic collision
Kinematics
Incident ray
37. 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.
Sublimation
Spring constant
Isotope
Work function
38. A unit of measurement for energy on atomic levels. 1 eV = J.
Chain reaction
Displacement
Electronvolt
Photon
39. A sheet - film - or screen with a pattern of equally spaced slits. Typically the width of the slits and space between them is chosen to generate a particular diffraction pattern.
Diffraction grating
Constructive interference
Orbit
Angular velocity
40. A scalar quantity. If an object is moved from point A to point B in space along path AB - the distance that the object has traveled is the length of the path AB. Distance is to be contrasted with displacement - which is simply a measure of the distan
Pascals
Reflected ray
Distance
Translational motion
41. An object that moves about a stable equilibrium point and experiences a restoring force that is directly proportional to the oscillator's displacement.
Trough
Radioactive decay
Atom
Simple harmonic oscillator
42. The points midway between nodes on a standing wave - where the oscillations are largest.
Antinode
Mole
Newton's First Law
Compression
43. F = ma. The net force - F - acting on an object causes the object to accelerate - a. The magnitude of the acceleration is directly proportional to the net force on the object and inversely proportional to the mass - m - of the object.
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44. Light such that all of the associated waves have the same wavelength and are in phase.
Coherent light
Hooke's Law
Diffraction grating
Polarization
45. A negatively charged particle that orbits the nucleus of the atom.
Center of mass
Motional emf
Electron
Focal point
46. The energy of a particle rotating around an axis.
Constant of proportionality
Absolute zero
Rotational kinetic energy
Compression
47. The net change - - in a point's angular position - . It is a scalar quantity.
Wavelength
Photon
Impulse
Angular displacement
48. 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 - .
Boyle's Law
Tail
Fundamental
Basis vector
49. The study of the properties of visible light - i.e. - the portion of the electromagnetic spectrum with wavelengths between 360 and 780 nm (1 nm = m/s).
Cycle
Planck's constant
Lenz's Law
Optics
50. The building blocks of all matter - quarks are the constituent parts of protons - neutrons - and mesons.
Focal length
System
Wave
Quark
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