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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. Heat transfer via electromagnetic waves.
Entropy
Constant of proportionality
Radiation
Centripetal force
2. 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.
Scalar
Photon
Orbit
Optics
3. The net change - - in a point's angular position - . It is a scalar quantity.
Angular displacement
Efficiency
Mass
Power
4. 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).
Directly proportional
Angular frequency
Power
Angle of incidence
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.
Latent heat of fusion
Pulley
Proton
Electronvolt
6. The gravitational force exerted on a given mass.
Vertex
Radioactivity
Weight
Spectroscope
7. The state of a nonrotating object upon whom the net torque acting is zero.
Equilibrium
Gravitational Potential Energy
Mole
Photon
8. 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.
Rigid body
Sublimation
Isotope
Boyle's Law
9. In oscillation - a cycle occurs when an object undergoing oscillatory motion completes a "round-trip." For instance - a pendulum bob released at angle has completed one cycle when it swings to and then back to again. In period motion - a cycle is the
Cycle
Work-energy theorem
Translational kinetic energy
Newton
10. A transfer of thermal energy from one system to another.
Virtual image
Magnetic flux
Photoelectron
Heat transfer
11. 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.
System
Heat
Electromagnetic spectrum
De Broglie wavelength
12. The phenomenon by which light traveling from a high n to a low n material will reflect from the optical interface if the incident angle is greater than the critical angle.
Radius of curvature
Thermal energy
Vector
Total internal reflection
13. 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.
Pitch
Convex mirror
Index of refraction
Longitudinal waves
14. The movement of a rigid body's center of mass in space.
De Broglie wavelength
Hertz (Hz)
Kepler's Third Law
Translational motion
15. A nuclear reaction in which a high-energy neutron bombards a heavy - unstable atomic nucleus - causing it to split into two smaller nuclei - and releasing some neutrons and a vast amount of energy at the same time
Nuclear fission
Phase change
Mass number
Center of curvature
16. 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 -
Latent heat of fusion
Crest
Compression
Dot product
17. The center of a mirror or lens.
Translational kinetic energy
Inertia
Vertex
Atomic number
18. The path of each planet around the sun is an ellipse with the sun at one focus.
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19. 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.
Proton
Momentum
Minima
Electromagnetic wave
20. 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.
Speed
Angular position
Spectroscope
Pitch
21. Occurs when every point in the rigid body moves in a circular path around a line called the axis of rotation.
Convection
Snell's Law
Rotational motion
Significant digits
22. An object that moves about a stable equilibrium point and experiences a restoring force that is directly proportional to the oscillator's displacement.
Second Law of Thermodynamics
Decibel
Mechanical energy
Simple harmonic oscillator
23. 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.
Pascals
Entropy
Kelvin
Virtual image
24. The cosine of an angle in a right triangle is equal to the length of the side adjacent to the angle divided by the length of the hypotenuse.
Activity
Concave lens
Force
Cosine
25. 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.
Lenz's Law
Temperature
Completely inelastic collision
Work function
26. 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.
Gamma decay
Compression
Latent heat of fusion
Concave lens
27. 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.
Celsius
Atomic number
Normal force
Coefficient of kinetic friction
28. 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
Newton's Law of Universal Gravitation
Beats
Total internal reflection
Radius of curvature
29. If two systems - A and B - are in thermal equilibrium and if B and C are also in thermal equilibrium - then systems A and C are necessarily in thermal equilibrium.
Compression
Conservation of momentum
Zeroth Law of Thermodynamics
Standing wave
30. A rigid body's resistance to being rotated. The moment of inertia for a single particle is MR2 - where M is the mass of the rigid body and R is the distance to the rotation axis. For rigid bodies - calculating the moment of inertia is more complicate
Radius of curvature
Collision
Index of refraction
Moment of inertia
31. Light such that all of the associated waves have the same wavelength and are in phase.
Newton's Second Law
Coherent light
Reflect
Kepler's Third Law
32. 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
Inertial reference frame
Beats
Inclined plane
33. A coefficient that tells how much a material will expand or contract lengthwise when it is heated or cooled.
Universal gas constant
Ground state
Crest
Coefficient of linear expansion
34. The amount of energy that metal must absorb before it can release a photoelectron from the metal.
Weight
Inversely proportional
Elastic collision
Work function
35. When a light ray strikes a surface - the angle of incidence is the angle between the incident ray and the normal.
Angle of incidence
Newton's First Law
Radius of curvature
Meson
36. 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.
Mass number
Weight
Translational motion
Kinetic energy
37. The application of kinematics to understand why objects move the way they do. More precisely - dynamics is the study of how forces cause motion.
Angle of reflection
Directly proportional
Fundamental
Dynamics
38. Kinematics is the study and description of the motion of objects.
Angular velocity
Beta particle
Angle of reflection
Kinematics
39. 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
Second Law of Thermodynamics
Cross product
Coefficient of volume expansion
Atom
40. 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
Torque
Gamma decay
Harmonic series
Snell's Law
41. 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.
Loudness
Absolute zero
First Law of Thermodynamics
Phase change
42. Heat transfer via the mass movement of molecules.
Rutherford nuclear model
Weightlessness
Convection
Simple harmonic oscillator
43. The property of a vector that distinguishes it from a scalar: while scalars have only a magnitude - vectors have both a magnitude and a direction. When graphing vectors in the xy-coordinate space - direction is usually given by the angle measured cou
Electron
Direction
Nuclear fission
Rutherford nuclear model
44. Body diagram- Illustrates the forces acting on an object - drawn as vectors originating from the center of the object.
Transverse waves
Specific heat
Free
Potential energy
45. In an interference or diffraction pattern - the places where there is the least light.
Medium
Potential energy
Minima
Oscillation
46. The principle stating that for any isolated system - linear momentum is constant with time.
Compression
Critical angle
Deposition
Conservation of momentum
47. The spectrum containing all the different kinds of electromagnetic waves - ranging in wavelength and frequency.
Electromagnetic spectrum
Instantaneous velocity
Joule
Motional emf
48. The number of cycles executed by a system in one second. Frequency is the inverse of period - f = 1/T. Frequency is measured in hertz - Hz.
Atom
Impulse
Frequency
Refraction
49. A unit vector is a vector with length 1.
Pascals
Rutherford nuclear model
Unit vector
Decay constant
50. The current induced in a circuit by a change in magnetic flux.
Induced current
Vertex
Dynamics
Scalar
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