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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 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.
Thermal equilibrium
Angular velocity
Latent heat of fusion
Hertz (Hz)
2. The acceleration of a body experiencing uniform circular motion. This acceleration is always directed toward the center of the circle.
Wavelength
Law of reflection
Centripetal acceleration
Wave speed
3. When a solid - liquid - or gas changes into another phase of matter.
Phase change
Equilibrium position
Coefficient of static friction
Acceleration
4. 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.
Oscillation
Spring constant
Coefficient of kinetic friction
Absolute zero
5. In the Bohr model of the atom - the state in which an electron has the least energy and orbits closest to the nucleus.
Ground state
Instantaneous velocity
Traveling waves
Constructive interference
6. 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.
Charles's Law
Ideal gas law
Heat engine
Atomic number
7. For a heat engine - the ratio of work done by the engine to heat intake. Efficiency is never 100%.
Sound
Basis vector
Nuclear fission
Efficiency
8. Body diagram- Illustrates the forces acting on an object - drawn as vectors originating from the center of the object.
Electromagnetic spectrum
Chain reaction
Free
Polarization
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
Motional emf
Cycle
Mutual Induction
Cosine
10. A process that aligns a wave of light to oscillate in one dimension rather than two.
Translational kinetic energy
Newton's Law of Universal Gravitation
Polarization
Constant of proportionality
11. An image created by a mirror or lens in such a way that light does actually come from where the image appears to be. If you place a screen in front of a real image - the image will be projected onto the screen.
Ideal gas law
Real image
Gravitational Potential Energy
Scalar
12. 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.
Coefficient of volume expansion
Basis vector
Significant digits
Electromagnetic spectrum
13. A property of a metal - the minimum frequency of electromagnetic radiation that is necessary to release photoelectrons from that metal.
Equilibrium position
Radiation
Threshold frequency
Inertia
14. The emf created by the motion of a charge through a magnetic field.
Kepler's First Law
Motional emf
Frequency
Isolated system
15. A back-and-forth movement about an equilibrium position. Springs - pendulums - and other oscillators experience harmonic motion.
Oscillation
Electromagnetic wave
Mass number
Temperature
16. An object that retains its overall shape - meaning that the particles that make up the rigid body stay in the same position relative to one another.
Rigid body
Momentum
Period
Activity
17. States that the current induced in a circuit by a change in magnetic flux is in the direction that will oppose that change in flux. Using the right-hand rule - point your thumb in the opposite direction of the change in magnetic flux. The direction y
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18. A form of radioactive decay where a heavy element emits an alpha particle and some energy - thus transforming into a lighter - more stable - element.
Alpha decay
Coefficient of static friction
Frequency
Beta decay
19. The amplification of one wave by another - identical wave of the same sign. Two constructively interfering waves are said to be "in phase."
Constructive interference
Collision
Meson
Conservation of momentum
20. The property by which a charge moving in a magnetic field creates an electric field.
Virtual image
Maxima
Electromagnetic induction
Oscillation
21. The stable position of a system where the net force acting on the object is zero.
Induced current
Equilibrium position
Torque
Concave lens
22. The current induced in a circuit by a change in magnetic flux.
Induced current
Melting point
Transverse waves
Electric generator
23. 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
Tip
Kinetic theory of gases
Velocity
Deposition
24. 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.
Michelson-Morley experiment
Power
Velocity
Impulse
25. 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
Inertial reference frame
Static friction
Gravitational Potential Energy
Moment of inertia
26. 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.
Cosine
Momentum
Law of conservation of energy
Internal energy
27. The disorder of a system.
Entropy
Photoelectric effect
Latent heat of sublimation
Normal
28. 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.
Equilibrium
Decibel
Concave lens
Collision
29. A coefficient that tells how much a material will expand or contract lengthwise when it is heated or cooled.
Work function
Electric generator
Coefficient of linear expansion
Harmonic series
30. A positively charged particle that - along with the neutron - occupies the nucleus of the atom.
Proton
Charles's Law
Transformer
Collision
31. 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
Angle of incidence
Focal point
Neutron number
Diffraction
32. The amount of energy that metal must absorb before it can release a photoelectron from the metal.
Gamma decay
Weak nuclear force
Work function
Amplitude
33. A means of defining the direction of the cross product vector. To define the direction of the vector - position your right hand so that your fingers point in the direction of A - and then curl them around so that they point in the direction of B. Th
Photoelectric effect
Kinetic energy
Right-hand rule
Direction
34. The distance between successive wave crests - or troughs. Wavelength is measured in meters and is related to frequency and wave speed by = v/f.
Crest
Wavelength
Neutrino
Cycle
35. 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
Vector
Thermal equilibrium
Chain reaction
Proton
36. The temperature at which a material will change phase from liquid to gas or gas to liquid.
Hertz (Hz)
Meson
Boiling point
Lenz's Law
37. 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
Polarization
Efficiency
Transformer
Concave mirror
38. 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 - .
Concave mirror
Fundamental
Law of reflection
Atom
39. The constant of proportionality in Newton's Law of Gravitation. It reflects the proportion of the gravitational force and - the product of two particles' masses divided by the square of the bodies' separation. N · m2/kg2.
Gravitational constant
Orbit
Electromagnetic induction
Photoelectric effect
40. The property by which a changing current in one coil of wire induces an emf in another.
Mutual Induction
Margin of error
Moment of inertia
Melting point
41. A collision in which the colliding particles stick together.
Tangent
Completely inelastic collision
Elastic collision
Rotational kinetic energy
42. For a gas held at a constant temperature - pressure and volume are inversely proportional.
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43. 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
Polarization
Restoring force
Potential energy
Dot product
44. A collision in which momentum is conserved but kinetic energy is not.
Distance
Node
Frictional force
Inelastic collision
45. 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
Magnitude
Atomic number
Second Law of Thermodynamics
Impulse
46. A scale for measuring temperature - defined such that water freezes at 0ºC and boils at 100ºC. 0ºC = 273 K.
Celsius
Oscillation
Wave speed
Real image
47. A wave with wave crests that propagate down the length of the medium - in contrast to stationary standing waves. The velocity at which a crest propagates is called the wave speed.
Traveling waves
Normal
Dispersion
Medium
48. 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
Bohr atomic model
Distance
Speed
Translational kinetic energy
49. 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.
Component
Efficiency
Weightlessness
Normal
50. 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
Wave speed
Third Law of Thermodynamics
Equilibrium
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