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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 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.
Electron
Rutherford nuclear model
Joule
Instantaneous velocity
2. The joule (J) is the unit of work and energy. A joule is 1 N · m or 1 kg · m2/s2.
Kinematics
Joule
Doppler shift
Electromagnetic wave
3. 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
Vector
Cycle
Total internal reflection
Medium
4. A neutrally charged particle that - along with protons - constitutes the nucleus of an atom.
Neutron
Displacement
Mutual Induction
Crest
5. 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
Gamma decay
Newton's First Law
Work function
6. The units of frequency - defined as inverse-seconds (1 Hz = 1 s-1). "Hertz" can be used interchangeably with "cycles per second."
Rotational motion
System
Gamma ray
Hertz (Hz)
7. 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.
Work
Equilibrium
Magnitude
Instantaneous velocity
8. 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
Right-hand rule
Gravitational Potential Energy
System
Normal force
9. The motion of a body in a circular path with constant speed.
Centripetal force
Nucleus
Uniform circular motion
Phase
10. The center of a mirror or lens.
Vertex
Cycle
Kinematics
Rutherford nuclear model
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 -
Compression
Reflect
Atom
Index of refraction
12. The amount of heat needed to raise the temperature of one gram of water by one degree Celsius. 1 cal = 4.19 J.
Coefficient of kinetic friction
Calorie
Maxima
Margin of error
13. 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.
Angular acceleration
Conservation of Angular Momentum
Meson
First Law of Thermodynamics
14. The ray of light that is reflected from a mirror or other reflecting surface.
Reflected ray
Radian
Chain reaction
Trough
15. 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).
Thermal energy
Total internal reflection
Weight
Power
16. A scale for measuring temperature - defined such that 0K is the lowest theoretical temperature a material can have. 273K = 0ºC.
Kinetic theory of gases
Kelvin
Electromagnetic induction
Rigid body
17. 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
Deposition
Kepler's Third Law
Wave speed
18. A measure of force per unit area. Pressure is measured in N/m2 or Pa.
Pressure
Nucleus
Medium
Angular momentum
19. 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
Collision
Tail
Uncertainty principle
Harmonic series
20. 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.
Inelastic collision
Weightlessness
Translational kinetic energy
Photoelectron
21. The force of gravity - F - between two particles of mass and - separated by a distance r - has a magnitude of - where G is the gravitational constant. The force is directed along the line joining the two particles.
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22. 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.
Electric generator
Direction
Convection
Destructive interference
23. A small particle-like bundle of electromagnetic radiation.
Constructive interference
Weak nuclear force
Oscillation
Photon
24. The principle stating that for any isolated system - linear momentum is constant with time.
Conservation of momentum
Atom
Radiation
Kepler's First Law
25. 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.
Uniform circular motion
Focal point
Index of refraction
Wave speed
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
Motional emf
Heat engine
Normal force
Law of conservation of energy
27. For a reflected light ray - . In other words - a ray of light reflects of a surface in the same plane as the incident ray and the normal - and at an angle to the normal that is equal to the angle between the incident ray and the normal.
Law of reflection
Threshold frequency
Newton's Third Law
Right-hand rule
28. Heat transfer via the mass movement of molecules.
Convection
Kepler's Third Law
Efficiency
Nuclear fission
29. The bending of light at the corners of objects or as it passes through narrow slits or apertures.
Component
Impulse
Zeroth Law of Thermodynamics
Diffraction
30. The line perpendicular to a surface. There is only one normal for any given surface.
Normal
Cycle
Static friction
Work-energy theorem
31. The straight line that runs through the focal point and the vertex of a mirror or lens.
Principal axis
Universal gas constant
Axis of rotation
Antinode
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
Electric generator
Spring constant
Frictional force
Atom
33. The phenomenon of light bouncing off a surface - such as a mirror.
Isotope
Reflection
Atom
Harmonic series
34. Waves that oscillate in the same direction as the propagation of the wave. Sound is carried by longitudinal waves - since the air molecules move back and forth in the same direction the sound travels.
Impulse
Atom
Calorie
Longitudinal waves
35. 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
Neutrino
Universal gas constant
Efficiency
Nuclear fission
36. When dealing with reflection or refraction - the incident ray is the ray of light before it strikes the reflecting or refracting surface.
Center of mass
Incident ray
Destructive interference
Refracted ray
37. A system with many parts in periodic - or repetitive - motion. The oscillations in one part cause vibrations in nearby parts.
Rutherford nuclear model
Wave
Gravitational constant
Joule
38. The property by which a charge moving in a magnetic field creates an electric field.
Electromagnetic induction
Constant of proportionality
Concave lens
Electron
39. For an oscillating spring - the restoring force exerted by the spring is directly proportional to the displacement. That is - the more the spring is displaced - the stronger the force that will pull toward the equilibrium position. This law is expres
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40. An almost massless particle of neutral charge that is released along with a beta particle in beta decay.
Third Law of Thermodynamics
Centripetal acceleration
Neutrino
Refracted ray
41. The building blocks of all matter - quarks are the constituent parts of protons - neutrons - and mesons.
Angular acceleration
Index of refraction
Center of mass
Quark
42. The temperature at which a material will change phase from solid to liquid or liquid to solid.
Superposition
Melting point
Second Law of Thermodynamics
Minima
43. A vector quantity - L - that is the rotational analogue of linear momentum. For a single particle - the angular momentum is the cross product of the particle's displacement from the axis of rotation and the particle's linear momentum - . For a rigid
Elastic collision
Mass number
Angular momentum
Proton
44. A negatively charged particle that orbits the nucleus of the atom.
Alpha decay
Hypotenuse
Newton's Second Law
Electron
45. 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.
Index of refraction
Component
Conservation of Angular Momentum
Absolute zero
46. In radioactive substances - the number of nuclei that decay per second. Activity - A - will be larger in large samples of radioactive material - since there will be more nuclei.
Neutron number
Activity
Node
Second Law of Thermodynamics
47. There are a few versions of this law. One is that heat flows spontaneously from hot to cold - but not in the reverse direction. Another is that there is no such thing as a 100% efficient heat engine. A third states that the entropy - or disorder - of
Second Law of Thermodynamics
Significant digits
Magnetic flux
Isotope
48. 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
Strong nuclear force
Speed
Fundamental
Component
49. The point of a mirror or lens where all light that runs parallel to the principal axis will be focused. Concave mirrors and convex lenses are designed to focus light into the focal point. Convex mirrors and concave lenses focus light away from the fo
Coefficient of kinetic friction
Hypotenuse
Boiling point
Focal point
50. The angle between a refracted ray and the line normal to the surface.
Angle of refraction
Simple harmonic oscillator
Equilibrium position
Weightlessness