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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. 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
Sublimation
Atom
Photoelectric effect
Component
2. The motion of a body in a circular path with constant speed.
Uniform circular motion
Angular displacement
Speed
Vertex
3. 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.
Quark
Meson
Coefficient of static friction
Heat engine
4. 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.
Orbit
Component
Electromagnetic induction
Beta decay
5. The line that every particle in the rotating rigid body circles about.
Axis of rotation
Newton's First Law
Velocity
Universal gas constant
6. Also called a diverging lens - a lens that is thinner in the middle than at the edges. Concave lenses refract light away from a focal point.
Mass defect
Concave lens
Conduction
Electric generator
7. 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.
Ideal gas law
Temperature
Diffraction
Power
8. The force involved in beta decay that changes a proton to a neutron and releases an electron and a neutrino.
Celsius
Boiling point
Free
Weak nuclear force
9. Energy associated with the state of motion. The translational kinetic energy of an object is given by the equation .
Orbit
Latent heat of sublimation
Instantaneous velocity
Kinetic energy
10. 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.
Crest
Ground state
De Broglie wavelength
Induced current
11. 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.
Sine
Isolated system
Angle of refraction
Wave speed
12. A quantity that possesses a magnitude but not a direction. Mass and length are common examples.
Scalar
Hertz (Hz)
Pressure
Michelson-Morley experiment
13. The process by which a gas turns directly into a solid because it cannot exist as a liquid at certain pressures.
Deposition
Third Law of Thermodynamics
Restoring force
Internal energy
14. 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
Newton's First Law
Electronvolt
Pressure
Amplitude
15. 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.
Concave lens
Instantaneous velocity
Meson
Center of mass
16. 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.
Unit vector
Weightlessness
Conservation of Angular Momentum
Newton's Third Law
17. 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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18. 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.
Second Law of Thermodynamics
Angular momentum
Temperature
Crest
19. A negatively charged particle that orbits the nucleus of the atom.
Lenz's Law
Magnitude
Electron
Reflected ray
20. The energy of the molecules that make up an object. It is related to heat - which is the amount of energy transferred from one object to another object that is a different temperature.
Superposition
Unit vector
Thermal energy
Angle of incidence
21. The state of a nonrotating object upon whom the net torque acting is zero.
Longitudinal waves
Centripetal acceleration
Focal point
Equilibrium
22. The energy of a particle moving in space. It is defined in s of a particle's mass - m - and velocity - v - as (1/2)mv2.
Michelson-Morley experiment
Newton's Third Law
Inertia
Translational kinetic energy
23. A scalar quantity that tells us how fast an object is moving. It measures the rate of change in distance over time. Speed is to be contrasted with velocity in that there is no direction associated with speed.
Momentum
Inertia
Speed
Latent heat of transformation
24. 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.
Velocity
Pendulum
Virtual image
Charles's Law
25. A coefficient that tells how much a material will expand or contract lengthwise when it is heated or cooled.
Photoelectric effect
Beats
Coefficient of linear expansion
Gamma ray
26. A measurement of a body's inertia - or resistance to being accelerated.
Translational motion
Maxima
Melting point
Mass
27. The emf created by the motion of a charge through a magnetic field.
Inelastic collision
Motional emf
Law of conservation of energy
Cross product
28. 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.
Frictional force
Power
Index of refraction
Pulley
29. The property by which a charge moving in a magnetic field creates an electric field.
Electromagnetic induction
Collision
Angle of reflection
Normal
30. The amplification of one wave by another - identical wave of the same sign. Two constructively interfering waves are said to be "in phase."
Angular momentum
Electromagnetic spectrum
Oscillation
Constructive interference
31. A unit of force: 1 N is equivalent to a 1 kg · m/s2.
Newton
Angle of refraction
Sublimation
Inertia
32. 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.
Kepler's Third Law
Destructive interference
Distance
Rotational motion
33. A small particle-like bundle of electromagnetic radiation.
Photon
Snell's Law
System
Beta decay
34. A form of radioactive decay where a heavy element emits an alpha particle and some energy - thus transforming into a lighter - more stable - element.
Magnetic flux
Coefficient of kinetic friction
Alpha decay
Angular position
35. The movement of a rigid body's center of mass in space.
System
Neutron number
Translational motion
Motional emf
36. A vector quantity defined as the product of the force acting on a body multiplied by the time interval over which the force is exerted.
Impulse
Coefficient of linear expansion
Refracted ray
Decibel
37. In an interference or diffraction pattern - the places where there is the least light.
De Broglie wavelength
Latent heat of sublimation
Radioactive decay
Minima
38. The model of the atom according to which negatively charged electrons orbit a positively charged nucleus. This model was developed by Ernest Rutherford in light of the results from his gold foil experiment.
Power
Dot product
Temperature
Rutherford nuclear model
39. 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
Pitch
Wavelength
Bohr atomic model
Faraday's Law
40. The phenomenon of light bouncing off a surface - such as a mirror.
Joule
Chain reaction
Strong nuclear force
Reflection
41. For a heat engine - the ratio of work done by the engine to heat intake. Efficiency is never 100%.
Decibel
Inertia
Efficiency
Latent heat of transformation
42. 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.
Activity
Superposition
Mass
Velocity
43. 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
Directly proportional
Kinematic equations
Electromagnetic spectrum
Rotational kinetic energy
44. Relates the angle of incidence to the angle of refraction: .
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45. With spherical mirrors - the radius of the sphere of which the mirror is a part.
Superposition
Refraction
Angular velocity
Radius of curvature
46. A constant - - not to be confused with wavelength - that defines the speed at which a radioactive element undergoes decay. The greater is - the faster the element decays.
Work function
Optics
Decay constant
Reflected ray
47. Indicates how "bouncy" or "stiff" a spring is. More specifically - the spring constant - k - is the constant of proportionality between the restoring force exerted by the spring - and the spring's displacement from equilibrium. The greater the value
Isotope
Normal
Snell's Law
Spring constant
48. A constant in the numerator of a formula.
Constant of proportionality
Mechanical energy
Centripetal force
Radiation
49. 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
Threshold frequency
Incident ray
Collision
Compression
50. A device that converts mechanical energy to electrical energy by rotating a coil in a magnetic field; sometimes called a "dynamo."
Electric generator
Wavelength
Axis of rotation
Concave mirror
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