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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. 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.
Mutual Induction
Isotope
Frictional force
Nuclear fusion
2. 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.
Inertia
Ideal gas law
Cross product
Compression
3. 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.
Axis of rotation
Inertia
Zeroth Law of Thermodynamics
Refraction
4. 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.
Wavelength
Mass defect
Calorie
Frequency
5. A number - Z - associated with the number of protons in the nucleus of an atom. Every element can be defined in s of its atomic number - since every atom of a given element has the same number of protons.
Radiation
Atomic number
Direction
Neutrino
6. The ray of light that is refracted through a surface into a different medium.
Beta particle
Refracted ray
Force
Pressure
7. A form of radioactivity where an excited atom releases a photon of gamma radiation - thereby returning to a lower energy state. The atomic structure itself does not change in the course of gamma radiation.
Photoelectron
Gamma decay
Pulley
Cycle
8. A vector quantity defined as the rate of change of the displacement vector with time. It is to be contrasted with speed - which is a scalar quantity for which no direction is specified.
Electromagnetic wave
Velocity
Kinetic friction
Constant of proportionality
9. An almost massless particle of neutral charge that is released along with a beta particle in beta decay.
Destructive interference
Electromagnetic wave
Convection
Neutrino
10. 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
Temperature
Collision
Rutherford nuclear model
Mass
11. A coefficient that tells how much the volume of a solid will change when it is heated or cooled.
Coefficient of volume expansion
Legs
Work function
Alpha decay
12. A particle - which consists of two protons and two neutrons. It is identical to the nucleus of a helium atom and is ejected by heavy particles undergoing alpha decay.
Trough
Alpha particle
Vector
Superposition
13. The angle between a reflected ray and the normal.
Phase
Latent heat of transformation
Right-hand rule
Angle of reflection
14. Two quantities are inversely proportional if an increase in one results in a proportional decrease in the other - and a decrease in one results in a proportional increase in the other. In a formula defining a certain quantity - those quantities to wh
Optics
Inversely proportional
Spring constant
Activity
15. The net change - - in a point's angular position - . It is a scalar quantity.
Node
Angular displacement
Convex mirror
First Law of Thermodynamics
16. For a gas held at constant pressure - temperature and volume are directly proportional.
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17. 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
Angular velocity
Isolated system
Distance
Destructive interference
18. 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
Kepler's Second Law
Medium
Universal gas constant
19. 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.
Simple harmonic oscillator
Wave speed
Tail
Radian
20. 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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21. The lowest theoretical temperature a material can have - where the molecules that make up the material have no kinetic energy. Absolute zero is reached at 0 K or -273º C.
Angular frequency
Absolute zero
Torque
Boyle's Law
22. A unit for measuring angles; also called a "rad." 2p rad = 360º.
Radiation
Reflect
Radian
Isotope
23. 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.
Faraday's Law
Translational kinetic energy
Significant digits
Kelvin
24. A property of a metal - the minimum frequency of electromagnetic radiation that is necessary to release photoelectrons from that metal.
Minima
Work
Third Law of Thermodynamics
Threshold frequency
25. A neutrally charged particle that - along with protons - constitutes the nucleus of an atom.
Meson
Quark
Rarefaction
Neutron
26. 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
Transformer
Boiling point
Lenz's Law
Cycle
27. 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.
Neutrino
Orbit
Angular acceleration
Reflect
28. The energy stored in a thermodynamic system.
Internal energy
Simple harmonic oscillator
Law of conservation of energy
Kinetic friction
29. 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
Dot product
Spring constant
Isotope
Traveling waves
30. The amount of error that's possible in a given measurement.
Margin of error
Medium
Transformer
Conduction
31. 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.
Translational kinetic energy
Standing wave
Atomic number
Weight
32. The points on a standing wave where total destructive interference causes the medium to remain fixed at its equilibrium position.
Electric generator
Node
Tangent
Nuclear fusion
33. A body or set of bodies that we choose to analyze as a group.
Dot product
Conservation of Angular Momentum
Induced current
System
34. 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
Alpha decay
Beta particle
Kepler's Third Law
Bohr atomic model
35. A reference frame in which Newton's First Law is true. Two inertial reference frames move at a constant velocity relative to one another. According to the first postulate of Einstein's theory of special relativity - the laws of physics are the same i
Atomic number
Inertial reference frame
Node
Pulley
36. The line that every particle in the rotating rigid body circles about.
Work function
Axis of rotation
Power
Tension force
37. 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
Planck's constant
Destructive interference
Second Law of Thermodynamics
38. A device that converts mechanical energy to electrical energy by rotating a coil in a magnetic field; sometimes called a "dynamo."
Diffraction
Wave speed
Activity
Electric generator
39. A scale for measuring temperature - defined such that water freezes at 0ºC and boils at 100ºC. 0ºC = 273 K.
Gamma decay
Trough
Celsius
Hooke's Law
40. 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
Specific heat
Basis vector
Gamma decay
41. The bending of light at the corners of objects or as it passes through narrow slits or apertures.
Work-energy theorem
Diffraction
Completely inelastic collision
Equilibrium position
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 - .
Ground state
Newton's Law of Universal Gravitation
Thermal energy
Fundamental
43. The mass difference between a nucleus and the sum of the masses of the constituent protons and neutrons.
Wave speed
Mass defect
Magnification
Quark
44. 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
Medium
Impulse
Lenz's Law
Doppler shift
45. The motion of a body in a circular path with constant speed.
Beta decay
Uniform circular motion
Momentum
Temperature
46. A form of radioactive decay where a heavy element emits an alpha particle and some energy - thus transforming into a lighter - more stable - element.
Virtual image
Alpha decay
Mechanical energy
Force
47. The amount of heat of a material required to raise the temperature of either one kilogram or one gram of that material by one degree Celsius. Different units may be used depending on whether specific heat is measured in s of grams or kilograms - and
Specific heat
Angle of refraction
Coefficient of volume expansion
Displacement
48. The path of each planet around the sun is an ellipse with the sun at one focus.
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49. 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 -
Electron
Axis of rotation
Rarefaction
Center of curvature
50. A vector quantity - or vector - is an object possessing - and fully described by - a magnitude and a direction. Graphically a vector is depicted as an arrow with its magnitude given by the length of the arrow and its direction given by where the arro
First Law of Thermodynamics
Neutron
Kinetic friction
Vector