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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. An object that moves about a stable equilibrium point and experiences a restoring force that is directly proportional to the oscillator's displacement.
Work-energy theorem
Simple harmonic oscillator
Mutual Induction
Nucleus
2. The points on a standing wave where total destructive interference causes the medium to remain fixed at its equilibrium position.
Center of curvature
Node
Potential energy
Simple harmonic oscillator
3. In the Bohr model of the atom - the state in which an electron has the least energy and orbits closest to the nucleus.
Coefficient of kinetic friction
Pitch
Ground state
Newton's Third Law
4. The amount of heat necessary to transform a liquid at a given temperature into a gas of the same temperature - or the amount of heat needed to be taken away from a gas of a given temperature to transform it into a liquid of the same temperature.
Directly proportional
Amplitude
Latent heat of vaporization
Alpha particle
5. An object at rest remains at rest - unless acted upon by a net force. An object in motion remains in motion - unless acted upon by a net force.
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6. 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
Kepler's Second Law
Normal force
Work-energy theorem
Pressure
7. 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
Scalar
Directly proportional
Electronvolt
8. 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.
Angular acceleration
Mole
Heat engine
Electromagnetic wave
9. The tendency of an object to remain at a constant velocity - or its resistance to being accelerated. Newton's First Law is alternatively called the Law of Inertia because it describes this tendency.
Translational motion
Potential energy
Tail
Inertia
10. A force caused by the roughness of two materials in contact - deformations in the materials - and a molecular attraction between the materials. Frictional forces are always parallel to the plane of contact between two surfaces and opposite the direct
Fundamental
Frictional force
Focal point
Centripetal force
11. 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.
First Law of Thermodynamics
Decibel
Beats
Orbit
12. A body or set of bodies that we choose to analyze as a group.
Newton's First Law
System
Uncertainty principle
Calorie
13. A constant - J · s - which is useful in quantum physics. A second constant associated with Planck's constant is .
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14. The amount of energy that metal must absorb before it can release a photoelectron from the metal.
Neutron
Work function
Simple harmonic oscillator
Kepler's Second Law
15. The process by which unstable nuclei spontaneously release particles and/or energy so as to come to a more stable arrangement. The most common forms of radioactive decay are alpha decay - beta decay - and gamma decay.
Dynamics
Snell's Law
Radioactive decay
Normal force
16. In reference to oscillation - amplitude is the maximum displacement of the oscillator from its equilibrium position. Amplitude tells how far an oscillator is swinging back and forth. In periodic motion - amplitude is the maximum displacement in each
Ground state
Equilibrium position
Amplitude
Virtual image
17. When dealing with reflection or refraction - the incident ray is the ray of light before it strikes the reflecting or refracting surface.
Legs
Newton's Second Law
Incident ray
Mole
18. 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
Centripetal acceleration
Phase
Convex lens
Entropy
19. The application of kinematics to understand why objects move the way they do. More precisely - dynamics is the study of how forces cause motion.
Gravitational constant
Celsius
Dynamics
Kinematics
20. 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.
Neutrino
Inertial reference frame
Motional emf
Virtual image
21. Two quantities are directly proportional if an increase in one results in a proportional increase in the other - and a decrease in one results in a proportional decrease in the other. In a formula defining a certain quantity - those quantities to whi
Law of reflection
Mass defect
Proton
Directly proportional
22. A collision in which the colliding particles stick together.
Gravitational constant
Radius of curvature
Completely inelastic collision
Instantaneous velocity
23. The two shorter sides of a right triangle that meet at the right angle.
Specific heat
Joule
Nucleus
Legs
24. The sum of a system's potential and kinetic energy. In many systems - including projectiles - pulleys - pendulums - and motion on frictionless surfaces - mechanical energy is conserved. One important type of problem in which mechanical energy is not
Force
Polarization
Mechanical energy
Absolute zero
25. 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
Mass number
Index of refraction
Angular momentum
Transformer
26. A class of elementary particle whose mass is between that of a proton and that of an electron. A common kind of meson is the pion.
Angular displacement
Wavelength
Radioactive decay
Meson
27. 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
Angular momentum
Unit vector
Pendulum
Radius of curvature
28. A neutrally charged particle that - along with protons - constitutes the nucleus of an atom.
Angular acceleration
Photoelectron
Boiling point
Neutron
29. The motion of a body in a circular path with constant speed.
Index of refraction
Uniform circular motion
Melting point
Nucleus
30. The square of the amplitude of a sound wave is called the sound's loudness - or volume.
Loudness
Specific heat
Kinematic equations
Center of curvature
31. An area of high air pressure that acts as the wave trough for sound waves. The spacing between successive rarefactions is the wavelength of sound - and the number of successive areas of rarefaction that arrive at the ear per second is the frequency -
Rarefaction
Gamma decay
Third Law of Thermodynamics
Vertex
32. 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.
Vector
Alpha particle
Radiation
Isotope
33. The building blocks of all matter - quarks are the constituent parts of protons - neutrons - and mesons.
Quark
Right-hand rule
Radiation
Doppler shift
34. The angle between a reflected ray and the normal.
Photon
Distance
Inversely proportional
Angle of reflection
35. Another word for the frequency of a sound wave.
Pitch
Spectroscope
Gravitational constant
Angular displacement
36. The property by which a charge moving in a magnetic field creates an electric field.
Oscillation
Electromagnetic induction
Weightlessness
Refraction
37. 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.
Rotational motion
Antinode
Specific heat
Real image
38. 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
Law of conservation of energy
Polarization
Vector
Right-hand rule
39. Life- The amount of time it takes for one-half of a radioactive sample to decay.
Sound
Deposition
Half
Electromagnetic spectrum
40. 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
Work function
Pulley
Absolute zero
41. The center of an atom - where the protons and neutrons reside. Electrons then orbit this nucleus.
Cycle
Significant digits
Beta decay
Nucleus
42. 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
Transformer
Decibel
Gravitational constant
43. The force necessary to maintain a body in uniform circular motion. This force is always directed radially toward the center of the circle.
Focal point
Centripetal force
Inertial reference frame
Axis of rotation
44. The ray of light that is reflected from a mirror or other reflecting surface.
Reflected ray
Gold foil experiment
Rigid body
Spring
45. A coefficient that tells how much the volume of a solid will change when it is heated or cooled.
Tangent
Wavelength
Translational kinetic energy
Coefficient of volume expansion
46. 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.
Electromagnetic spectrum
Celsius
Inelastic collision
Michelson-Morley experiment
47. In a right triangle - the sine of a given angle is the length of the side opposite the angle divided by the length of the hypotenuse.
Sine
Node
Half
Focal point
48. The effect of force on rotational motion.
Virtual image
Torque
Radioactive decay
Restoring force
49. 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.
Convection
Concave mirror
Rotational motion
Gravitational constant
50. A unit of force: 1 N is equivalent to a 1 kg · m/s2.
Refracted ray
Work
Sublimation
Newton
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