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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. In a right triangle - the sine of a given angle is the length of the side opposite the angle divided by the length of the hypotenuse.
Impulse
Third Law of Thermodynamics
Angular momentum
Sine
2. 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
Angular velocity
Collision
Latent heat of sublimation
Beta decay
3. 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
Conduction
Joule
Second Law of Thermodynamics
Weber
4. 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.
Melting point
Coefficient of kinetic friction
Center of curvature
Wave speed
5. 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
Medium
Chain reaction
Rutherford nuclear model
Concave mirror
6. 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.
Threshold frequency
Reflect
Concave mirror
Instantaneous velocity
7. The process by which a solid turns directly into gas - because it cannot exist as a liquid at a certain pressure.
Scalar
Refracted ray
Coefficient of kinetic friction
Sublimation
8. With spherical mirrors - the center of the sphere of which the mirror is a part. All of the normals pass through it.
Superposition
Center of curvature
Beats
Neutron number
9. Any vector can be expressed as the sum of two mutually perpendicular component vectors. Usually - but not always - these components are multiples of the basis vectors - and ; that is - vectors along the x-axis and y-axis. We define these two vectors
Critical angle
Rutherford nuclear model
Component
Directly proportional
10. 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
Angle of refraction
Constant of proportionality
Radian
11. The current induced in a circuit by a change in magnetic flux.
Mass defect
Atomic number
Induced current
Conservation of Angular Momentum
12. 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.
Conduction
Basis vector
Node
Michelson-Morley experiment
13. A back-and-forth movement about an equilibrium position. Springs - pendulums - and other oscillators experience harmonic motion.
Fundamental
Sublimation
Crest
Oscillation
14. The force necessary to maintain a body in uniform circular motion. This force is always directed radially toward the center of the circle.
Centripetal force
Kelvin
Vertex
Refracted ray
15. 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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16. The number of hydrogen atoms in one gram of hydrogen - equal to . When counting the number of molecules in a gas - it is often convenient to count them in moles.
Mole
Internal energy
Centripetal force
Displacement
17. The force transmitted along a rope or cable.
Universal gas constant
Trough
Second Law of Thermodynamics
Tension force
18. The amount of heat necessary to transform a solid at a given temperature into a liquid of the same temperature - or the amount of heat needed to be removed from a liquid of a given temperature to transform it into a solid of the same temperature.
Calorie
Weight
Latent heat of fusion
Phase change
19. Occurs when every point in the rigid body moves in a circular path around a line called the axis of rotation.
Translational kinetic energy
Rotational motion
Critical angle
Second Law of Thermodynamics
20. 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
Law of reflection
Standing wave
Tension force
21. The series of standing waves supported by a string with both ends tied down. The first member of the series - called the fundamental - has two nodes at the ends and one anti-node in the middle. The higher harmonics are generated by placing an integra
Right-hand rule
Wave
Decay constant
Harmonic series
22. The points on a standing wave where total destructive interference causes the medium to remain fixed at its equilibrium position.
Node
Inclined plane
Nuclear fusion
Translational kinetic energy
23. In an interference or diffraction pattern - the places where there is the most light.
Newton
Maxima
Weber
Convex lens
24. Two oscillators that have the same frequency and amplitude - but reach their maximum displacements at different times - are said to have different phases. Similarly - two waves are in phase if their crests and troughs line up exactly - and they are o
Diffraction
Constructive interference
Phase
Coefficient of volume expansion
25. The amount heat necessary to cause a substance to undergo a phase transition.
Latent heat of transformation
Decibel
Oscillation
Maxima
26. 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.
Static friction
Significant digits
Oscillation
Equilibrium position
27. 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.
Equilibrium position
Phase
Convex mirror
Distance
28. The amount of error that's possible in a given measurement.
Margin of error
Magnetic flux
Incident ray
Work
29. A vector quantity defined as the rate of change of the displacement vector with time. It is to be contrasted with speed - which is a scalar quantity for which no direction is specified.
Velocity
Angular velocity
Wave speed
Coefficient of linear expansion
30. 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
Compression
Cycle
Right-hand rule
Destructive interference
31. The temperature at which a material will change phase from solid to liquid or liquid to solid.
Melting point
Latent heat of fusion
Convection
Rotational kinetic energy
32. A coefficient that tells how much a material will expand or contract lengthwise when it is heated or cooled.
Center of curvature
Kinematics
Coefficient of linear expansion
Work
33. A vector quantity - equal to the rate of change of the angular velocity vector with time. It is typically given in units of rad/s2.
Inversely proportional
Angle of refraction
Motional emf
Angular acceleration
34. The center of an atom - where the protons and neutrons reside. Electrons then orbit this nucleus.
Nucleus
Rutherford nuclear model
Wave speed
Hypotenuse
35. The angle between a reflected ray and the normal.
Radioactivity
Angle of reflection
Mutual Induction
Reflect
36. 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).
Latent heat of sublimation
Conservation of momentum
Optics
Thermal equilibrium
37. Another word for the frequency of a sound wave.
Pitch
Refracted ray
Temperature
Constructive interference
38. 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.
Standing wave
Pitch
Pascals
Alpha decay
39. A conserved scalar quantity associated with the state or condition of an object or system of objects. We can roughly define energy as the capacity for an object or system to do work. There are many different types of energy - such as kinetic energy -
Equilibrium position
Frequency
Law of conservation of energy
Energy
40. The tendency of an object to remain at a constant velocity - or its resistance to being accelerated. Newton's First Law is alternatively called the Law of Inertia because it describes this tendency.
Minima
Inertia
Translational kinetic energy
Strong nuclear force
41. 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.
Coefficient of volume expansion
Zeroth Law of Thermodynamics
Universal gas constant
Index of refraction
42. 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 -
Rarefaction
Translational kinetic energy
Hooke's Law
Photoelectron
43. 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 - .
Impulse
Longitudinal waves
Uniform circular motion
Fundamental
44. 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
Motional emf
Directly proportional
Newton's Third Law
Potential energy
45. 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 -
Collision
Snell's Law
Standing wave
Compression
46. A scale for measuring temperature - defined such that 0K is the lowest theoretical temperature a material can have. 273K = 0ºC.
Pressure
Conservation of Angular Momentum
Coefficient of volume expansion
Kelvin
47. Energy cannot be made or destroyed; energy can only be changed from one place to another or from one form to another.
Michelson-Morley experiment
Period
Law of conservation of energy
Speed
48. The position - of an object according to a co-ordinate system measured in s of the angle of the object from a certain origin axis. Conventionally - this origin axis is the positive x-axis.
Isolated system
Angular position
Cosine
Gravitational Potential Energy
49. The force involved in beta decay that changes a proton to a neutron and releases an electron and a neutrino.
Instantaneous velocity
Direction
First Law of Thermodynamics
Weak nuclear force
50. A unit for measuring angles; also called a "rad." 2p rad = 360º.
Sound
Convex lens
Radian
Magnification