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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. An object is called radioactive if it undergoes radioactive decay.
Radioactivity
Centripetal acceleration
Hertz (Hz)
Acceleration
2. 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.
Electromagnetic induction
Speed
Reflected ray
Sine
3. A scale for measuring temperature - defined such that water freezes at 0ºC and boils at 100ºC. 0ºC = 273 K.
Crest
Celsius
Vertex
Pascals
4. The building blocks of all matter - quarks are the constituent parts of protons - neutrons - and mesons.
Bohr atomic model
Quark
Electric generator
Angle of reflection
5. 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.
Sublimation
Medium
Latent heat of fusion
Newton's Second Law
6. A wavelength - given by = h/mv - which is associated with matter. Louis de Broglie proposed the idea that matter could be treated as waves in 1923 and applied this theory successfully to small particles like electrons.
De Broglie wavelength
Basis vector
Inversely proportional
Incident ray
7. Kinematics is the study and description of the motion of objects.
Joule
Real image
Kinematics
Electron
8. 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
Boiling point
Potential energy
Acceleration
Chain reaction
9. 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.
Component
Angular velocity
Basis vector
Atom
10. The property by which a changing current in one coil of wire induces an emf in another.
Atom
Coherent light
Mutual Induction
Latent heat of vaporization
11. 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.
Heat
Spectroscope
Longitudinal waves
Inertia
12. 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
Dot product
Centripetal acceleration
Ground state
13. 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
Equilibrium position
Radioactive decay
Electric generator
14. Given the trajectory of an object or system - the center of mass is the point that has the same acceleration as the object or system as a whole would have if its mass were concentrated at that point. In terms of force - the center of mass is the poin
Center of mass
Hypotenuse
Gravitational Potential Energy
Heat transfer
15. 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.
Work
Standing wave
Concave lens
Coefficient of kinetic friction
16. 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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17. The principle stating that for any isolated system - linear momentum is constant with time.
Conservation of momentum
Inertia
Simple harmonic oscillator
Latent heat of transformation
18. The points midway between nodes on a standing wave - where the oscillations are largest.
Rigid body
Electromagnetic induction
Antinode
Threshold frequency
19. 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.
Decibel
Node
Instantaneous velocity
Pulley
20. The units of frequency - defined as inverse-seconds (1 Hz = 1 s-1). "Hertz" can be used interchangeably with "cycles per second."
Electromagnetic spectrum
Hertz (Hz)
Fundamental
Coefficient of volume expansion
21. The force between two surfaces that are not moving relative to one another. The force of static friction is parallel to the plane of contact between the two objects and resists the force pushing or pulling on the object.
Distance
Static friction
Weight
Kelvin
22. The phenomenon of light bouncing off a surface - such as a mirror.
Neutron
Reflection
Convection
Charles's Law
23. The amount of heat needed to raise the temperature of one gram of water by one degree Celsius. 1 cal = 4.19 J.
Reflect
Harmonic series
Focal point
Calorie
24. When an object is held in circular motion about a massive body - like a planet or a sun - due to the force of gravity - that object is said to be in orbit. Objects in orbit are in perpetual free fall - and so are therefore weightless.
Pressure
Radius of curvature
Orbit
Convection
25. 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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26. The points of maximum negative displacement along a wave. They are the opposite of wave crests.
Dispersion
Snell's Law
Trough
Cross product
27. An object cannot be cooled to absolute zero.
Translational motion
Third Law of Thermodynamics
Amplitude
Rarefaction
28. When dealing with reflection or refraction - the incident ray is the ray of light before it strikes the reflecting or refracting surface.
Component
Photoelectron
Latent heat of vaporization
Incident ray
29. 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.
Torque
Radioactive decay
Latent heat of sublimation
Angular frequency
30. 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.
Diffraction grating
Dispersion
Velocity
Concave mirror
31. Energy cannot be made or destroyed; energy can only be changed from one place to another or from one form to another.
Beats
Wave
Optics
Law of conservation of energy
32. A constant - J · s - which is useful in quantum physics. A second constant associated with Planck's constant is .
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33. The name of an electron released from the surface of a metal due to the photoelectric effect.
Period
Uncertainty principle
Photoelectron
Centripetal acceleration
34. In reference to oscillation - amplitude is the maximum displacement of the oscillator from its equilibrium position. Amplitude tells how far an oscillator is swinging back and forth. In periodic motion - amplitude is the maximum displacement in each
Hypotenuse
Amplitude
Equilibrium
Calorie
35. The five equations used to solve problems in kinematics in one dimension with uniform acceleration.
Angular acceleration
Kinematic equations
Frequency
Orbit
36. Linear momentum - p - commonly called "momentum" for short - is a vector quantity defined as the product of an object's mass - m - and its velocity - v.
Simple harmonic oscillator
Displacement
Radiation
Momentum
37. The cancellation of one wave by another wave that is exactly out of phase with the first. Despite the dramatic name of this phenomenon - nothing is "destroyed" by this interference—the two waves emerge intact once they have passed each other.
Destructive interference
Strong nuclear force
Magnitude
Newton's First Law
38. An experiment in 1879 that showed that the speed of light is constant to all observers. Einstein used the results of this experiment as support for his theory of special relativity.
Photoelectric effect
Michelson-Morley experiment
Translational kinetic energy
Mechanical energy
39. The angle between a refracted ray and the line normal to the surface.
Angle of refraction
Neutrino
Antinode
Proton
40. 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.
Proton
Inertia
Joule
Temperature
41. 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
Spring constant
Universal gas constant
Component
Rotational motion
42. 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
Photoelectric effect
Induced current
Weightlessness
Kinetic theory of gases
43. 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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44. 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
Threshold frequency
Mechanical energy
Cosine
Virtual image
45. 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
Dynamics
Gravitational constant
Directly proportional
Tangent
46. 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
Kinetic theory of gases
Diffraction grating
Power
47. A frequency - f - defined as the number of revolutions a rigid body makes in a given time interval. It is a scalar quantity commonly denoted in units of Hertz (Hz) or s-1.
Moment of inertia
Longitudinal waves
Hypotenuse
Angular frequency
48. The path of each planet around the sun is an ellipse with the sun at one focus.
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49. The separation of different color light via refraction.
Deposition
Work-energy theorem
Law of reflection
Dispersion
50. 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.
Static friction
Center of curvature
Legs
Mass number