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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 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 -
Electromagnetic wave
Rarefaction
Mole
Pascals
2. A constant in the numerator of a formula.
Bohr atomic model
Constant of proportionality
Optics
Displacement
3. The time - T - required for a rigid body to complete one revolution.
Convex mirror
Destructive interference
Mole
Angular period
4. A collision in which both kinetic energy and momentum are conserved.
Total internal reflection
Angular frequency
Cosine
Elastic collision
5. 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).
Reflect
Optics
Dynamics
Radian
6. The straight line that runs through the focal point and the vertex of a mirror or lens.
Fundamental
Principal axis
Nuclear fission
Normal force
7. An object cannot be cooled to absolute zero.
System
Third Law of Thermodynamics
Radian
Reflected ray
8. When two waves of slightly different frequencies interfere with one another - they produce a "beating" interference pattern that alternates between constructive (in-phase) and destructive (out-of-phase). In the case of sound waves - this sort of inte
Beats
Neutron
Transformer
Margin of error
9. An electromagnetic wave of very high frequency.
Dot product
Internal energy
Gamma ray
Refraction
10. 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.
Traveling waves
Work
Work function
Universal gas constant
11. 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 -
Specific heat
Traveling waves
Pendulum
Compression
12. 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.
Atom
Photon
Total internal reflection
Inversely proportional
13. Body diagram- Illustrates the forces acting on an object - drawn as vectors originating from the center of the object.
Principal axis
Momentum
Ground state
Free
14. 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.
Cross product
Velocity
Latent heat of vaporization
Uncertainty principle
15. 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 -
Restoring force
Energy
Pressure
De Broglie wavelength
16. 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.
Focal point
Meson
Electromagnetic wave
Directly proportional
17. A form of radioactive decay where a heavy element emits an alpha particle and some energy - thus transforming into a lighter - more stable - element.
Convection
Destructive interference
Alpha decay
Reflect
18. The temperature at which a material will change phase from liquid to gas or gas to liquid.
Dispersion
Inclined plane
Boiling point
Law of reflection
19. The gravitational force exerted on a given mass.
Weight
Specific heat
Potential energy
Tangent
20. 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).
Tension force
Power
Cycle
Orbit
21. Another word for the frequency of a sound wave.
Rotational kinetic energy
Pitch
Mass
Static friction
22. 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.
Energy
Newton's Second Law
Angle of incidence
Electromagnetic wave
23. Waves carried by variations in air pressure. The speed of sound waves in air at room temperature and pressure is roughly 343 m/s.
Sound
Oscillation
Superposition
Total internal reflection
24. 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.
Medium
De Broglie wavelength
Inertial reference frame
Snell's Law
25. 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
Mechanical energy
Specific heat
Uncertainty principle
Antinode
26. The reaction force of the ground - a table - etc. - when an object is placed upon it. The normal force is a direct consequence of Newton's Third Law: when an object is placed on the ground - the ground pushes back with the same force that it is pushe
Critical angle
Rigid body
Normal force
Electric generator
27. Waves produced by a source that is moving with respect to the observer will seem to have a higher frequency and smaller wavelength if the motion is towards the observer - and a lower frequency and longer wavelength if the motion is away from the obse
Isolated system
Angular frequency
Doppler shift
Universal gas constant
28. A collision in which momentum is conserved but kinetic energy is not.
Hertz (Hz)
Diffraction
Total internal reflection
Inelastic collision
29. 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.
First Law of Thermodynamics
Rotational kinetic energy
Motional emf
Displacement
30. 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.
Rotational motion
Decay constant
Principal axis
Second Law of Thermodynamics
31. The amplification of one wave by another - identical wave of the same sign. Two constructively interfering waves are said to be "in phase."
Mechanical energy
Sine
Constructive interference
Kinetic friction
32. 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.
Deposition
Coherent light
Significant digits
Focal length
33. Kinematics is the study and description of the motion of objects.
Conservation of momentum
Spring
Kinematics
Centripetal acceleration
34. 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
Coefficient of linear expansion
Coefficient of volume expansion
Coefficient of static friction
35. The current induced in a circuit by a change in magnetic flux.
Induced current
Total internal reflection
Mutual Induction
Virtual image
36. Two materials are in thermal equilibrium if they are at the same temperature.
Alpha decay
Bohr atomic model
Thermal equilibrium
Convex lens
37. 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
Gravitational Potential Energy
Chain reaction
Impulse
Photon
38. The building blocks of all matter - quarks are the constituent parts of protons - neutrons - and mesons.
Quark
Universal gas constant
Electromagnetic induction
Superposition
39. A unit of measurement for energy on atomic levels. 1 eV = J.
Electronvolt
Wave
Constant of proportionality
Mole
40. 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.
Coefficient of kinetic friction
Destructive interference
Wavelength
Pitch
41. An experiment by Ernest Rutherford that proved for the first time that atoms have nuclei.
Distance
Gold foil experiment
Electromagnetic wave
Beta particle
42. The unit for measuring pressure. One Pascal is equal to one Newton per meter squared - 1 Pa = 1 N/m2.
Pascals
Faraday's Law
Spectroscope
Kepler's Second Law
43. The unit of magnetic flux - equal to one T · m2.
Weber
Sound
Vertex
Focal length
44. 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
Period
Margin of error
Kepler's Second Law
Transformer
45. 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.
Decay constant
Threshold frequency
Vertex
Atomic number
46. In an interference or diffraction pattern - the places where there is the most light.
Internal energy
Convex mirror
Alpha decay
Maxima
47. Given the period - T - and semimajor axis - a - of a planet's orbit - the ratio is the same for every planet.
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48. States that the net work done on an object is equal to the object's change in kinetic energy.
Ground state
Radian
Work-energy theorem
Spring constant
49. 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.
Half
Momentum
Universal gas constant
Impulse
50. The property by which a charge moving in a magnetic field creates an electric field.
Inclined plane
Wave speed
Electromagnetic induction
Torque