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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. A reference frame in which Newton's First Law is true. Two inertial reference frames move at a constant velocity relative to one another. According to the first postulate of Einstein's theory of special relativity - the laws of physics are the same i
Strong nuclear force
First Law of Thermodynamics
Inertial reference frame
Hertz (Hz)
2. 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
Proton
Kinetic theory of gases
Thermal energy
Harmonic series
3. 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.
Gravitational Potential Energy
Normal force
Ideal gas law
Magnitude
4. A wedge or a slide. The dynamics of objects sliding down inclined planes is a popular topic on SAT II Physics.
Collision
Antinode
Inclined plane
Restoring force
5. The phenomenon of light bouncing off a surface - such as a mirror.
Focal point
Angle of incidence
Conservation of momentum
Reflection
6. 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
Bohr atomic model
Law of conservation of energy
Radian
Melting point
7. For a heat engine - the ratio of work done by the engine to heat intake. Efficiency is never 100%.
Radian
Boyle's Law
Efficiency
Weight
8. 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
Photoelectron
Constant of proportionality
Diffraction grating
Beats
9. A measure of the average kinetic energy of the molecules in a system. Temperature is related to heat by the specific heat of a given substance.
Temperature
Magnification
Electromagnetic wave
Nuclear fission
10. In the graphical representation of vectors - the tail of the arrow is the blunt end (the end without a point).
Second Law of Thermodynamics
Diffraction
Convex mirror
Tail
11. 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.
Reflect
Nucleus
Legs
Direction
12. 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.
Motional emf
Kinetic friction
Coefficient of static friction
Standing wave
13. The process by which unstable nuclei spontaneously release particles and/or energy so as to come to a more stable arrangement. The most common forms of radioactive decay are alpha decay - beta decay - and gamma decay.
Latent heat of transformation
Hertz (Hz)
Radioactive decay
Pulley
14. The temperature at which a material will change phase from solid to liquid or liquid to solid.
Third Law of Thermodynamics
Work function
Melting point
Refraction
15. The movement of a rigid body's center of mass in space.
Refraction
Hertz (Hz)
Translational motion
Minima
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.
Velocity
Activity
Law of reflection
Tension force
17. The property by which a changing current in one coil of wire induces an emf in another.
Rigid body
Compression
Induced current
Mutual Induction
18. When a light ray strikes a surface - the angle of incidence is the angle between the incident ray and the normal.
Celsius
Law of conservation of energy
Angle of incidence
Centripetal force
19. The energy of a particle rotating around an axis.
Inclined plane
Rotational kinetic energy
Latent heat of transformation
Principal axis
20. The dot product of the area and the magnetic field passing through it. Graphically - it is a measure of the number and length of magnetic field lines passing through that area. It is measured in Webers (Wb).
Alpha decay
Bohr atomic model
Heat transfer
Magnetic flux
21. When electromagnetic radiation shines upon a metal - the surface of the metal releases energized electrons. The way in which these electrons are released contradicts classical theories of electromagnetic radiation and supports the quantum view accord
Photoelectric effect
Motional emf
Quark
Magnitude
22. 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.
Mechanical energy
Standing wave
Conduction
Inclined plane
23. For a gas held at a constant temperature - pressure and volume are inversely proportional.
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24. Another word for the frequency of a sound wave.
Work
Pitch
Beta particle
Mutual Induction
25. The force involved in beta decay that changes a proton to a neutron and releases an electron and a neutrino.
Weak nuclear force
Calorie
Coefficient of volume expansion
Newton's Third Law
26. A pendulum consists of a bob connected to a rod or rope. At small angles - a pendulum's motion approximates simple harmonic motion as it swings back and forth without friction.
Pendulum
Motional emf
Longitudinal waves
Critical angle
27. 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.
Coefficient of static friction
Quark
Directly proportional
Compression
28. The process by which a gas turns directly into a solid because it cannot exist as a liquid at certain pressures.
Kinetic energy
Mutual Induction
Frequency
Deposition
29. A system that no external net force acts upon. Objects within the system may exert forces upon one another - but they cannot receive any impulse from outside forces. Momentum is conserved in isolated systems.
Induced current
Work-energy theorem
Scalar
Isolated system
30. The points midway between nodes on a standing wave - where the oscillations are largest.
Kinematics
Spectroscope
Antinode
Potential energy
31. In an interference or diffraction pattern - the places where there is the most light.
Focal point
Radian
Maxima
Boyle's Law
32. In the Bohr model of the atom - the state in which an electron has the least energy and orbits closest to the nucleus.
Real image
Electric generator
Ground state
Cosine
33. The acceleration of a body experiencing uniform circular motion. This acceleration is always directed toward the center of the circle.
Newton's Second Law
Speed
Kinetic energy
Centripetal acceleration
34. 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
Energy
Ideal gas law
Mechanical energy
Magnification
35. 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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36. 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.
Refraction
Weightlessness
Vertex
System
37. 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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38. A constant in the numerator of a formula.
Threshold frequency
Constant of proportionality
Diffraction grating
Principal axis
39. 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.
Total internal reflection
Basis vector
Efficiency
Period
40. The five equations used to solve problems in kinematics in one dimension with uniform acceleration.
Kinematic equations
Concave lens
Rotational motion
Convection
41. A process that aligns a wave of light to oscillate in one dimension rather than two.
Lenz's Law
Joule
Polarization
First Law of Thermodynamics
42. 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.
Alpha particle
Work
Mass number
Kepler's Third Law
43. 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.
Tip
Significant digits
Weak nuclear force
Electron
44. A system with many parts in periodic - or repetitive - motion. The oscillations in one part cause vibrations in nearby parts.
Pulley
Inertial reference frame
Wave
Diffraction grating
45. 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.
Vertex
Isotope
Virtual image
Velocity
46. 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.
Inertial reference frame
Electromagnetic wave
Weightlessness
Simple harmonic oscillator
47. An electromagnetic wave of very high frequency.
Radiation
Gold foil experiment
De Broglie wavelength
Gamma ray
48. The application of kinematics to understand why objects move the way they do. More precisely - dynamics is the study of how forces cause motion.
Inertia
Normal force
Power
Dynamics
49. An object that moves about a stable equilibrium point and experiences a restoring force that is directly proportional to the oscillator's displacement.
Period
Rutherford nuclear model
Simple harmonic oscillator
Angular velocity
50. 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.
Work
Reflected ray
Node
Frequency