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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. The amplification of one wave by another - identical wave of the same sign. Two constructively interfering waves are said to be "in phase."
Bohr atomic model
Pascals
Constructive interference
Kinematics
2. The line perpendicular to a surface. There is only one normal for any given surface.
Normal
Motional emf
Sine
Heat
3. A mirror that is curved such that its center is closer to the viewer than the edges - such as a doorknob. Convex mirrors reflect light away from a focal point.
Atomic number
Snell's Law
Rarefaction
Convex mirror
4. A particle - which consists of two protons and two neutrons. It is identical to the nucleus of a helium atom and is ejected by heavy particles undergoing alpha decay.
Thermal energy
Work function
Constant of proportionality
Alpha particle
5. With spherical mirrors - the center of the sphere of which the mirror is a part. All of the normals pass through it.
Efficiency
Cycle
Reflected ray
Center of curvature
6. 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
Efficiency
Gravitational Potential Energy
Alpha decay
Potential energy
7. 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
Activity
Inertial reference frame
Angle of refraction
Inversely proportional
8. The emf created by the motion of a charge through a magnetic field.
Motional emf
Rigid body
Mass defect
Temperature
9. A machine that operates by taking heat from a hot place - doing some work with that heat - and then exhausting the rest of the heat into a cool place. The internal combustion engine of a car is an example of a heat engine.
Strong nuclear force
Alpha decay
Energy
Heat engine
10. A positively charged particle that - along with the neutron - occupies the nucleus of the atom.
Electromagnetic spectrum
Hypotenuse
Angular period
Proton
11. The distance between successive wave crests - or troughs. Wavelength is measured in meters and is related to frequency and wave speed by = v/f.
Diffraction grating
Wavelength
Uncertainty principle
Optics
12. The time it takes a system to pass through one cycle of its repetitive motion. The period - T - is the inverse of the motion's frequency - f = 1/T.
Radiation
Period
Latent heat of fusion
Gamma ray
13. In the graphical representation of vectors - the tail of the arrow is the blunt end (the end without a point).
Electromagnetic wave
Tail
Gamma decay
Planck's constant
14. If a line is drawn from the sun to the planet - then the area swept out by this line in a given time interval is constant.
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15. A small particle-like bundle of electromagnetic radiation.
Photon
Rotational motion
Alpha particle
Coefficient of linear expansion
16. The amount of heat of a material required to raise the temperature of either one kilogram or one gram of that material by one degree Celsius. Different units may be used depending on whether specific heat is measured in s of grams or kilograms - and
Heat
Instantaneous velocity
Specific heat
Radioactive decay
17. A wave with wave crests that propagate down the length of the medium - in contrast to stationary standing waves. The velocity at which a crest propagates is called the wave speed.
Traveling waves
Photon
Mutual Induction
Antinode
18. 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.
Radioactive decay
Dynamics
Universal gas constant
Isolated system
19. A property of a metal - the minimum frequency of electromagnetic radiation that is necessary to release photoelectrons from that metal.
Rigid body
Threshold frequency
Latent heat of sublimation
Heat engine
20. 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.
Weight
Nuclear fusion
Doppler shift
Significant digits
21. In an interference or diffraction pattern - the places where there is the least light.
Minima
Critical angle
Inertial reference frame
Faraday's Law
22. The amount of heat necessary to transform a liquid at a given temperature into a gas of the same temperature - or the amount of heat needed to be taken away from a gas of a given temperature to transform it into a liquid of the same temperature.
Latent heat of vaporization
Inversely proportional
Translational kinetic energy
Radioactivity
23. 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
Mole
Collision
Loudness
Kinetic theory of gases
24. 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
Heat transfer
Traveling waves
Thermal energy
Focal point
25. The ray of light that is reflected from a mirror or other reflecting surface.
Rigid body
Fundamental
Elastic collision
Reflected ray
26. A vector quantity - or vector - is an object possessing - and fully described by - a magnitude and a direction. Graphically a vector is depicted as an arrow with its magnitude given by the length of the arrow and its direction given by where the arro
Sound
Meson
Vector
Concave lens
27. 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 -
Refracted ray
Heat
Zeroth Law of Thermodynamics
Rarefaction
28. When dealing with reflection or refraction - the incident ray is the ray of light before it strikes the reflecting or refracting surface.
Equilibrium position
Incident ray
Inertia
Displacement
29. 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.
Electromagnetic spectrum
Electron
Crest
Efficiency
30. Objects that experience oscillatory or simple harmonic motion when distorted. Their motion is described by Hooke's Law.
Conduction
Spring
Latent heat of fusion
Beta particle
31. 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.
Rigid body
Pendulum
Charles's Law
Energy
32. A collision in which momentum is conserved but kinetic energy is not.
Equilibrium
Inversely proportional
Cycle
Inelastic collision
33. The lowest theoretical temperature a material can have - where the molecules that make up the material have no kinetic energy. Absolute zero is reached at 0 K or -273º C.
Latent heat of vaporization
Fundamental
Absolute zero
Rigid body
34. 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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35. The velocity at any given instant in time. To be contrasted with average velocity - which is a measure of the change in displacement over a given time interval.
Radiation
Index of refraction
Distance
Instantaneous velocity
36. A device made of two coils - which converts current of one voltage into current of another voltage. In a step-up transformer - the primary coil has fewer turns than the secondary - thus increasing the voltage. In a step-down transformer - the seconda
Mechanical energy
Transformer
Kinematic equations
Celsius
37. For a gas held at a constant temperature - pressure and volume are inversely proportional.
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38. For a heat engine - the ratio of work done by the engine to heat intake. Efficiency is never 100%.
Faraday's Law
Efficiency
Gravitational constant
Neutrino
39. The coefficient of kinetic friction - - for two materials is the constant of proportionality between the normal force and the force of kinetic friction. It is always a number between zero and one.
Thermal equilibrium
Principal axis
Coefficient of kinetic friction
Period
40. 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 .
Compression
Cross product
Dot product
Work-energy theorem
41. 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
Translational kinetic energy
Cycle
Transverse waves
Chain reaction
42. 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
Law of conservation of energy
Inertial reference frame
Radian
43. In the graphical representation of vectors - the tip of the arrow is the pointy end.
Beta particle
Tension force
Tip
Torque
44. For a gas held at constant pressure - temperature and volume are directly proportional.
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45. 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.
Index of refraction
Directly proportional
Second Law of Thermodynamics
Tail
46. 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.
Nuclear fusion
Concave lens
Radius of curvature
Amplitude
47. A collision in which the colliding particles stick together.
Gold foil experiment
Hypotenuse
Celsius
Completely inelastic collision
48. A constant in the numerator of a formula.
Constant of proportionality
Hertz (Hz)
Efficiency
Atom
49. A collision in which both kinetic energy and momentum are conserved.
Elastic collision
Temperature
Transformer
Scalar
50. 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
Focal point
Convex lens
Isolated system