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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 principle stating that for any isolated system - linear momentum is constant with time.
Conservation of momentum
Longitudinal waves
Decibel
Index of refraction
2. A device that breaks incoming light down into spectral rays - so that one can see the exact wavelength constituents of the light.
Spectroscope
Gravitational Potential Energy
Alpha particle
Kinematics
3. A logorithmic unit for measuring the volume of sound - which is the square of the amplitude of sound waves.
Decibel
Magnetic flux
Angular frequency
Superposition
4. The temperature at which a material will change phase from liquid to gas or gas to liquid.
Work-energy theorem
Threshold frequency
Heat engine
Boiling point
5. The points midway between nodes on a standing wave - where the oscillations are largest.
Work-energy theorem
Antinode
Polarization
Heat
6. A unit of force: 1 N is equivalent to a 1 kg · m/s2.
Newton
Internal energy
Phase
Oscillation
7. 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
Destructive interference
Kinetic theory of gases
Distance
Weight
8. The force transmitted along a rope or cable.
Tension force
Diffraction grating
Uncertainty principle
Constant of proportionality
9. States that the current induced in a circuit by a change in magnetic flux is in the direction that will oppose that change in flux. Using the right-hand rule - point your thumb in the opposite direction of the change in magnetic flux. The direction y
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10. Body diagram- Illustrates the forces acting on an object - drawn as vectors originating from the center of the object.
Virtual image
Free
Pressure
Tail
11. A form of vector multiplication - where two vectors are multiplied to produce a third vector. The cross product of two vectors - A and B - separated by an angle - - is - where is a unit vector perpendicular to both A and B. To deine which direction
Cross product
Potential energy
Constant of proportionality
Refracted ray
12. 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.
Principal axis
Impulse
Tangent
Traveling waves
13. 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
Traveling waves
Deposition
Vector
14. 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
Weber
Velocity
Kinematics
Potential energy
15. A form of radioactive decay where a heavy element emits an alpha particle and some energy - thus transforming into a lighter - more stable - element.
Neutron number
Alpha decay
Angular momentum
Mole
16. 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.
Ideal gas law
Uniform circular motion
Temperature
Electromagnetic wave
17. 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.
Spring constant
Alpha particle
Sound
Force
18. A scale for measuring temperature - defined such that 0K is the lowest theoretical temperature a material can have. 273K = 0ºC.
Kelvin
Rutherford nuclear model
Alpha particle
Translational kinetic energy
19. The distance between the focal point and the vertex of a mirror or lens. For concave mirrors and convex lenses - this number is positive. For convex mirrors and concave lenses - this number is negative.
Rutherford nuclear model
Entropy
Focal length
Heat
20. A wave on a string that is tied to a pole at one end will reflect back toward its source - producing a wave that is the mirror-image of the original and which travels in the opposite direction.
Reflect
Radiation
Snell's Law
Coefficient of volume expansion
21. A number - Z - associated with the number of protons in the nucleus of an atom. Every element can be defined in s of its atomic number - since every atom of a given element has the same number of protons.
Potential energy
Medium
Decibel
Atomic number
22. The current induced in a circuit by a change in magnetic flux.
Boyle's Law
Induced current
Electric generator
Kepler's Second Law
23. A force caused by the roughness of two materials in contact - deformations in the materials - and a molecular attraction between the materials. Frictional forces are always parallel to the plane of contact between two surfaces and opposite the direct
Frictional force
Decay constant
Diffraction
Tail
24. The straight line that runs through the focal point and the vertex of a mirror or lens.
Threshold frequency
Angular frequency
Mass
Principal axis
25. A pulley is a simple machine that consists of a rope that slides around a disk or block.
Law of reflection
Charles's Law
Torque
Pulley
26. 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
Vertex
Spring
Spring constant
Isotope
27. In the Bohr model of the atom - the state in which an electron has the least energy and orbits closest to the nucleus.
Rotational kinetic energy
Ground state
Reflection
Nucleus
28. 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.
Electromagnetic wave
Orbit
Frictional force
Weightlessness
29. A measurement of a body's inertia - or resistance to being accelerated.
Work
Gamma ray
Mass
Second Law of Thermodynamics
30. 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.
Motional emf
Compression
Gravitational Potential Energy
Period
31. Also called a converging lens - a lens that is thicker in the middle than at the edges. Convex lenses refract light through a focal point.
Weight
Convex lens
First Law of Thermodynamics
Second Law of Thermodynamics
32. 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
Uniform circular motion
Standing wave
Medium
Equilibrium position
33. Life- The amount of time it takes for one-half of a radioactive sample to decay.
Half
Wave
Polarization
Electromagnetic wave
34. The force between two surfaces moving relative to one another. The frictional force is parallel to the plane of contact between the two objects and in the opposite direction of the sliding object's motion.
Kinetic friction
Basis vector
Latent heat of fusion
Latent heat of sublimation
35. An equation - PV = nRT - that relates the pressure - volume - temperature - and quantity of an ideal gas. An ideal gas is one that obeys the approximations laid out in the kinetic theory of gases.
Conservation of Angular Momentum
Potential energy
Newton's Law of Universal Gravitation
Ideal gas law
36. A principle derived by Werner Heisenberg in 1927 that tells us that we can never know both the position and the momentum of a particle at any given time.
Zeroth Law of Thermodynamics
Uncertainty principle
Dot product
Axis of rotation
37. 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.
Normal force
Mole
Acceleration
Angle of incidence
38. For a gas held at constant pressure - temperature and volume are directly proportional.
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39. 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
Bohr atomic model
Amplitude
Pendulum
Restoring force
40. Defined as the rate at which work is done - or the rate at which energy is transformed. P is measured in joules per second (J/s) - or watts (W).
Power
Constant of proportionality
Alpha particle
Distance
41. The number - N - of neutrons in an atomic nucleus.
Translational motion
Crest
Neutron number
Alpha decay
42. The particles and energy released by the fission or fusion of one atom may trigger the fission or fusion of further atoms. In a chain reaction - fission or fusion is rapidly transferred to a large number of atoms - releasing tremendous amounts of ene
Chain reaction
Node
Centripetal force
Equilibrium
43. 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.
Concave mirror
Pascals
Beta decay
Decay constant
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.
Charles's Law
Mechanical energy
First Law of Thermodynamics
Angular period
45. 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.
Weber
Diffraction
Destructive interference
Angle of incidence
46. 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
Beta decay
Vector
Temperature
Center of mass
47. A collision in which the colliding particles stick together.
Completely inelastic collision
Scalar
Superposition
Reflection
48. An almost massless particle of neutral charge that is released along with a beta particle in beta decay.
Neutrino
Law of reflection
Wave
Lenz's Law
49. Done when energy is transferred by a force. The work done by a force F in displacing an object by s is W = F · s.
Margin of error
Work
Radioactive decay
Wavelength
50. The building blocks of all matter - atoms are made up of a nucleus consisting of protons and neutrons - and a number of electrons that orbit the nucleus. An electrically neutral atom has as many protons as it has electrons.
Sublimation
Atom
Minima
Inclined plane