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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. A device that breaks incoming light down into spectral rays - so that one can see the exact wavelength constituents of the light.
Spectroscope
Diffraction
Reflect
Centripetal acceleration
2. A form of radioactive decay where a heavy element ejects a beta particle and a neutrino - becoming a lighter element in the process.
Beta decay
Impulse
Celsius
Center of curvature
3. Two quantities are directly proportional if an increase in one results in a proportional increase in the other - and a decrease in one results in a proportional decrease in the other. In a formula defining a certain quantity - those quantities to whi
Mass number
Kinetic theory of gases
Angular displacement
Directly proportional
4. An image created by a mirror or lens in such a way that light does actually come from where the image appears to be. If you place a screen in front of a real image - the image will be projected onto the screen.
Concave mirror
Real image
Law of conservation of energy
Diffraction grating
5. The speed at which a wave crest or trough propagates. Note that this is not the speed at which the actual medium (like the stretched string or the air particles) moves.
Cross product
Tangent
Wave speed
Equilibrium position
6. 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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7. 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
Equilibrium position
Beats
Ideal gas law
Component
8. The reaction force of the ground - a table - etc. - when an object is placed upon it. The normal force is a direct consequence of Newton's Third Law: when an object is placed on the ground - the ground pushes back with the same force that it is pushe
Conduction
Absolute zero
Normal force
Photoelectron
9. Kinematics is the study and description of the motion of objects.
Kinematics
Axis of rotation
Pitch
Spring
10. 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.
First Law of Thermodynamics
Standing wave
De Broglie wavelength
Nuclear fusion
11. The force that causes simple harmonic motion. The restoring force is always directed toward an object's equilibrium position.
Coefficient of volume expansion
Inclined plane
Meson
Restoring force
12. 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
Collision
Deposition
Convex mirror
Wavelength
13. Body diagram- Illustrates the forces acting on an object - drawn as vectors originating from the center of the object.
Free
Rotational kinetic energy
Destructive interference
Heat transfer
14. 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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15. A transverse traveling wave created by the oscillations of an electric field and a magnetic field. Electromagnetic waves travel at the speed of light - m/s. Examples include microwaves - X rays - and visible light.
Electromagnetic wave
Nucleus
Thermal energy
Period
16. 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 - .
Work-energy theorem
Kepler's Third Law
Fundamental
Second Law of Thermodynamics
17. The time - T - required for a rigid body to complete one revolution.
Minima
Gold foil experiment
Angular period
Ideal gas law
18. A coefficient that tells how much a material will expand or contract lengthwise when it is heated or cooled.
Entropy
Mutual Induction
Angular position
Coefficient of linear expansion
19. A transfer of thermal energy from one system to another.
Center of curvature
Refraction
Angular acceleration
Heat transfer
20. A vector quantity defined as the rate of change of the velocity vector with time.
Photoelectron
Acceleration
Restoring force
Radiation
21. A form of vector multiplication - where two vectors are multiplied to produce a scalar. The dot product of two vectors - A and B - is expressed by the equation A · B = AB cos .
Inertia
Dot product
Kepler's First Law
Magnification
22. A push or a pull that causes an object to accelerate.
Incident ray
Force
Radioactive decay
Mass defect
23. A quantity that possesses a magnitude but not a direction. Mass and length are common examples.
Scalar
Atom
Instantaneous velocity
Destructive interference
24. For a reflected light ray - . In other words - a ray of light reflects of a surface in the same plane as the incident ray and the normal - and at an angle to the normal that is equal to the angle between the incident ray and the normal.
Second Law of Thermodynamics
Axis of rotation
Dot product
Law of reflection
25. A unit of measurement for energy on atomic levels. 1 eV = J.
Melting point
Force
Newton's Third Law
Electronvolt
26. In oscillation - a cycle occurs when an object undergoing oscillatory motion completes a "round-trip." For instance - a pendulum bob released at angle has completed one cycle when it swings to and then back to again. In period motion - a cycle is the
Cycle
Tail
Kepler's Second Law
Pulley
27. A logorithmic unit for measuring the volume of sound - which is the square of the amplitude of sound waves.
Tension force
Decibel
Tail
Kelvin
28. The number of cycles executed by a system in one second. Frequency is the inverse of period - f = 1/T. Frequency is measured in hertz - Hz.
Unit vector
Frequency
Gamma decay
Diffraction grating
29. A back-and-forth movement about an equilibrium position. Springs - pendulums - and other oscillators experience harmonic motion.
Rutherford nuclear model
Crest
Newton's First Law
Oscillation
30. A measure of force per unit area. Pressure is measured in N/m2 or Pa.
Electromagnetic induction
Pressure
Rarefaction
Sublimation
31. A class of elementary particle whose mass is between that of a proton and that of an electron. A common kind of meson is the pion.
Component
Meson
Frequency
Heat transfer
32. A law - || = - which states that the induced emf is the change in magnetic flux in a certain time.
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33. The square of the amplitude of a sound wave is called the sound's loudness - or volume.
Loudness
Angular acceleration
Focal length
Hertz (Hz)
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.
Second Law of Thermodynamics
Concave lens
Inversely proportional
Total internal reflection
35. 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
Thermal energy
Superposition
Planck's constant
Inversely proportional
36. Heat transfer via electromagnetic waves.
Boiling point
Tension force
Angular displacement
Radiation
37. When a light ray strikes a surface - the angle of incidence is the angle between the incident ray and the normal.
Convection
Angle of incidence
Distance
Motional emf
38. The amplification of one wave by another - identical wave of the same sign. Two constructively interfering waves are said to be "in phase."
Coefficient of volume expansion
Constructive interference
Reflect
Polarization
39. 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
Direction
Deposition
Trough
Polarization
40. In an interference or diffraction pattern - the places where there is the most light.
Maxima
Angular momentum
Michelson-Morley experiment
Alpha decay
41. 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.
Frequency
Mass number
Atomic number
Significant digits
42. 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.
Spring constant
Fundamental
Centripetal force
Transverse waves
43. The net change - - in a point's angular position - . It is a scalar quantity.
Photoelectron
Dispersion
Angular displacement
Centripetal acceleration
44. Essentially a restatement of energy conservation - it states that the change in the internal energy of a system is equal to the heat added plus the work done on the system.
Principal axis
Virtual image
First Law of Thermodynamics
Mass defect
45. 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
Mechanical energy
Equilibrium
Axis of rotation
Crest
46. The force transmitted along a rope or cable.
Tension force
Completely inelastic collision
Alpha decay
Weightlessness
47. 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
Coefficient of linear expansion
Internal energy
Thermal equilibrium
Photoelectric effect
48. The unit of magnetic flux - equal to one T · m2.
Translational kinetic energy
Heat
Beta decay
Weber
49. Occurs when every point in the rigid body moves in a circular path around a line called the axis of rotation.
Minima
Rotational motion
Latent heat of sublimation
Tail
50. The principle by which the displacements from different waves traveling in the same medium add up. Superposition is the basis for interference.
Law of conservation of energy
Equilibrium position
Superposition
Heat
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