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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.
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 amount of heat needed to raise the temperature of one gram of water by one degree Celsius. 1 cal = 4.19 J.
Calorie
Latent heat of fusion
Reflection
Thermal energy
2. A vector quantity - - that reflects the change of angular displacement with time - and is typically given in units of rad/s. To find the direction of the angular velocity vector - take your right hand and curl your fingers along the particle or body
Angular velocity
Gold foil experiment
Rigid body
Second Law of Thermodynamics
3. A system with many parts in periodic - or repetitive - motion. The oscillations in one part cause vibrations in nearby parts.
Pendulum
Wave
Elastic collision
Period
4. 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.
Induced current
Reflect
Ground state
Index of refraction
5. Light such that all of the associated waves have the same wavelength and are in phase.
Third Law of Thermodynamics
Coherent light
Electric generator
Center of curvature
6. 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
Conduction
Doppler shift
Wavelength
Hooke's Law
7. The ray of light that is reflected from a mirror or other reflecting surface.
Reflected ray
Right-hand rule
Hertz (Hz)
Displacement
8. A measurement of a body's inertia - or resistance to being accelerated.
Mass
Torque
Directly proportional
Alpha particle
9. 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.
Ideal gas law
Translational kinetic energy
Neutrino
Gamma decay
10. 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.
Decay constant
Mass number
Translational motion
Equilibrium position
11. 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
Rotational motion
Kinetic theory of gases
Lenz's Law
Radioactivity
12. 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
Newton's Second Law
Cross product
Gravitational constant
Constant of proportionality
13. A vector of magnitude 1 along one of the coordinate axes. Generally - we take the basis vectors to be and - the vectors of length 1 along the x- and y-axes - respectively.
Weight
Basis vector
Heat
Medium
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
Celsius
Cycle
Angular velocity
Bohr atomic model
15. A system that no external net force acts upon. Objects within the system may exert forces upon one another - but they cannot receive any impulse from outside forces. Momentum is conserved in isolated systems.
Reflection
Mass number
Isolated system
Amplitude
16. The force that causes simple harmonic motion. The restoring force is always directed toward an object's equilibrium position.
Restoring force
Trough
Photon
Equilibrium
17. 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.
Period
Absolute zero
Concave lens
Centripetal force
18. The state of a nonrotating object upon whom the net torque acting is zero.
Equilibrium
Inversely proportional
Entropy
Zeroth Law of Thermodynamics
19. The emf created by the motion of a charge through a magnetic field.
Refracted ray
Optics
Motional emf
Center of mass
20. 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.
Period
Destructive interference
Loudness
Doppler shift
21. A vector quantity - equal to the rate of change of the angular velocity vector with time. It is typically given in units of rad/s2.
Phase change
Kepler's Second Law
Concave lens
Angular acceleration
22. 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.
Universal gas constant
Charles's Law
Boyle's Law
Convex mirror
23. 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 function
Decibel
Magnitude
Sine
24. A scalar quantity. If an object is moved from point A to point B in space along path AB - the distance that the object has traveled is the length of the path AB. Distance is to be contrasted with displacement - which is simply a measure of the distan
Distance
Kepler's First Law
Equilibrium position
Pulley
25. The time - T - required for a rigid body to complete one revolution.
Doppler shift
Angular period
Moment of inertia
Instantaneous velocity
26. Another word for the frequency of a sound wave.
Pitch
Mass
Tail
Free
27. An object cannot be cooled to absolute zero.
Uniform circular motion
Weightlessness
Third Law of Thermodynamics
Margin of error
28. The energy of a particle moving in space. It is defined in s of a particle's mass - m - and velocity - v - as (1/2)mv2.
Isolated system
Mole
Constant of proportionality
Translational kinetic energy
29. The bending of light as it passes from one medium to another. Light refracts toward the normal when going from a less dense medium into a denser medium and away from the normal when going from a denser medium into a less dense medium.
Refraction
Displacement
Half
Crest
30. When electromagnetic radiation shines upon a metal - the surface of the metal releases energized electrons. The way in which these electrons are released contradicts classical theories of electromagnetic radiation and supports the quantum view accord
Gravitational constant
Proton
Gravitational Potential Energy
Photoelectric effect
31. A machine that operates by taking heat from a hot place - doing some work with that heat - and then exhausting the rest of the heat into a cool place. The internal combustion engine of a car is an example of a heat engine.
Beats
Heat engine
Coefficient of kinetic friction
Weightlessness
32. When a solid - liquid - or gas changes into another phase of matter.
Rutherford nuclear model
Phase change
Reflection
Heat
33. A process that aligns a wave of light to oscillate in one dimension rather than two.
Polarization
Second Law of Thermodynamics
Electronvolt
Beta particle
34. The points on a standing wave where total destructive interference causes the medium to remain fixed at its equilibrium position.
Atomic number
Nucleus
Crest
Node
35. The property by which a changing current in one coil of wire induces an emf in another.
Collision
Motional emf
Mutual Induction
Hypotenuse
36. The points midway between nodes on a standing wave - where the oscillations are largest.
Gravitational Potential Energy
Velocity
Antinode
Legs
37. 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.
Standing wave
Coherent light
Convection
Coefficient of volume expansion
38. The acceleration of a body experiencing uniform circular motion. This acceleration is always directed toward the center of the circle.
Centripetal acceleration
Electronvolt
Principal axis
Cross product
39. The amount heat necessary to cause a substance to undergo a phase transition.
Beta decay
Neutrino
Inelastic collision
Latent heat of transformation
40. The temperature at which a material will change phase from solid to liquid or liquid to solid.
Moment of inertia
Velocity
Center of curvature
Melting point
41. Two oscillators that have the same frequency and amplitude - but reach their maximum displacements at different times - are said to have different phases. Similarly - two waves are in phase if their crests and troughs line up exactly - and they are o
Elastic collision
Work-energy theorem
Phase
Radiation
42. For two given media - the smallest angle of incidence at which total internal reflection occurs.
Efficiency
Critical angle
Thermal equilibrium
Diffraction
43. A nuclear reaction that takes place only at very high temperatures. Two light atoms - often hydrogen - fuse together to form a larger single atom - releasing a vast amount of energy in the process.
Standing wave
Centripetal force
Nuclear fusion
Magnitude
44. A back-and-forth movement about an equilibrium position. Springs - pendulums - and other oscillators experience harmonic motion.
Oscillation
Nucleus
Threshold frequency
Work-energy theorem
45. A scale for measuring temperature - defined such that water freezes at 0ºC and boils at 100ºC. 0ºC = 273 K.
Ideal gas law
Third Law of Thermodynamics
Celsius
Tail
46. A logorithmic unit for measuring the volume of sound - which is the square of the amplitude of sound waves.
Angular frequency
System
Radius of curvature
Decibel
47. The name of an electron released from the surface of a metal due to the photoelectric effect.
Kinetic energy
Photoelectron
Tension force
Decibel
48. The bending of light at the corners of objects or as it passes through narrow slits or apertures.
Diffraction
Snell's Law
Lenz's Law
Wavelength
49. If the net torque acting on a rigid body is zero - then the angular momentum of the body is constant or conserved.
Kepler's First Law
Temperature
Conservation of Angular Momentum
Angular period
50. 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
Hertz (Hz)
Force
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