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Test your basic knowledge |
SAT Subject Test: hysics
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Study First
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. The principle by which the displacements from different waves traveling in the same medium add up. Superposition is the basis for interference.
Law of reflection
Photon
Superposition
Decibel
2. 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.
Medium
Standing wave
Tail
Transverse waves
3. When a solid - liquid - or gas changes into another phase of matter.
Phase change
Chain reaction
Convection
Dot product
4. 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.
Magnetic flux
Simple harmonic oscillator
Angular velocity
Michelson-Morley experiment
5. 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
Wave speed
Second Law of Thermodynamics
Component
Inertial reference frame
6. A unit vector is a vector with length 1.
Snell's Law
Neutrino
Unit vector
Doppler shift
7. The straight line that runs through the focal point and the vertex of a mirror or lens.
Principal axis
Tip
Spring constant
Snell's Law
8. 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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9. A property common to both vectors and scalars. In the graphical representation of a vector - the vector's magnitude is equal to the length of the arrow.
Magnitude
Coefficient of static friction
Reflect
Cosine
10. 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
Restoring force
Harmonic series
Isotope
Phase change
11. An image created by a mirror or lens in such a way that light does not actually come from where the image appears to be.
Specific heat
Electric generator
Electron
Virtual image
12. 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.
Electronvolt
Quark
Coefficient of volume expansion
Mole
13. The force involved in beta decay that changes a proton to a neutron and releases an electron and a neutrino.
Simple harmonic oscillator
Sound
Conservation of Angular Momentum
Weak nuclear force
14. 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
Power
Maxima
Bohr atomic model
Real image
15. The spectrum containing all the different kinds of electromagnetic waves - ranging in wavelength and frequency.
Mechanical energy
Electromagnetic spectrum
Deposition
Newton's Law of Universal Gravitation
16. The ratio of the size of the image produced by a mirror or lens to the size of the original object. This number is negative if the image is upside-down.
Quark
Legs
Magnification
Photoelectric effect
17. A back-and-forth movement about an equilibrium position. Springs - pendulums - and other oscillators experience harmonic motion.
Oscillation
Standing wave
Equilibrium
Work-energy theorem
18. The force transmitted along a rope or cable.
Tension force
Angular velocity
Conservation of Angular Momentum
Concave mirror
19. The speed at which a wave crest or trough propagates. Note that this is not the speed at which the actual medium (like the stretched string or the air particles) moves.
Weightlessness
Equilibrium
Wave speed
Kelvin
20. The angle between a refracted ray and the line normal to the surface.
Conduction
Electric generator
Angle of refraction
Melting point
21. 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.
Axis of rotation
Kinematic equations
Focal length
Coefficient of kinetic friction
22. The path of each planet around the sun is an ellipse with the sun at one focus.
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23. The force necessary to maintain a body in uniform circular motion. This force is always directed radially toward the center of the circle.
Angle of incidence
Rutherford nuclear model
Centripetal force
Convex lens
24. The energy associated with the configuration of bodies attracted to each other by the gravitational force. It is a measure of the amount of work necessary to get the two bodies from a chosen point of reference to their present position. This point of
Directly proportional
First Law of Thermodynamics
Coefficient of kinetic friction
Gravitational Potential Energy
25. A unit for measuring angles; also called a "rad." 2p rad = 360º.
Principal axis
Radian
Centripetal acceleration
Directly proportional
26. The motion of a body in a circular path with constant speed.
Index of refraction
Center of mass
Uniform circular motion
Mass number
27. 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
Spring constant
Kinetic energy
Gravitational constant
Charles's Law
28. 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.
Radiation
Snell's Law
Oscillation
Latent heat of fusion
29. A positively charged particle that - along with the neutron - occupies the nucleus of the atom.
Radiation
Speed
Work-energy theorem
Proton
30. 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
Conservation of Angular Momentum
Instantaneous velocity
Angular momentum
Potential energy
31. The building blocks of all matter - quarks are the constituent parts of protons - neutrons - and mesons.
Incident ray
Quark
Newton's First Law
Component
32. 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
Equilibrium
Third Law of Thermodynamics
Efficiency
33. Occurs when every point in the rigid body moves in a circular path around a line called the axis of rotation.
Joule
Oscillation
Rotational motion
Angular momentum
34. 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.
Convex mirror
Efficiency
System
Mechanical energy
35. A scale for measuring temperature - defined such that 0K is the lowest theoretical temperature a material can have. 273K = 0ºC.
Kelvin
Latent heat of vaporization
Beta decay
Chain reaction
36. Another word for the frequency of a sound wave.
Displacement
Specific heat
Total internal reflection
Pitch
37. The force that causes simple harmonic motion. The restoring force is always directed toward an object's equilibrium position.
Distance
Restoring force
Hypotenuse
Translational motion
38. An electromagnetic wave of very high frequency.
Translational motion
Gamma ray
Quark
Wavelength
39. 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
Gold foil experiment
Constant of proportionality
Conduction
40. A form of radioactive decay where a heavy element ejects a beta particle and a neutrino - becoming a lighter element in the process.
Heat engine
Beta decay
Radioactive decay
Normal force
41. 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.
Transformer
Collision
Axis of rotation
Impulse
42. An object is called radioactive if it undergoes radioactive decay.
Scalar
Concave mirror
Crest
Radioactivity
43. Atoms of the same element may have different numbers of neutrons and therefore different masses. Atoms of the same element but with different numbers of neutrons are called isotopes of the same element.
Isolated system
Heat
Phase
Isotope
44. 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.
Uncertainty principle
Crest
Induced current
Pitch
45. The acceleration of a body experiencing uniform circular motion. This acceleration is always directed toward the center of the circle.
Angle of incidence
Faraday's Law
Superposition
Centripetal acceleration
46. Heat transfer via electromagnetic waves.
Atom
Radiation
Threshold frequency
Kepler's Second Law
47. 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.
Spectroscope
Pendulum
Sublimation
Lenz's Law
48. A transfer of thermal energy. We don't speak about systems "having" heat - but about their "transferring" heat - much in the way that dynamical systems don't "have" work - but rather "do" work.
Spring constant
Heat
Axis of rotation
Index of refraction
49. 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
Chain reaction
Mechanical energy
Angular velocity
Transformer
50. 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
Nuclear fission
Doppler shift
Destructive interference
Radioactive decay
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