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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 coefficient that tells how much a material will expand or contract lengthwise when it is heated or cooled.
Coefficient of linear expansion
Electronvolt
Angle of incidence
Mole
2. The ray of light that is refracted through a surface into a different medium.
Second Law of Thermodynamics
Refracted ray
System
Beta decay
3. The force between two surfaces moving relative to one another. The frictional force is parallel to the plane of contact between the two objects and in the opposite direction of the sliding object's motion.
Uncertainty principle
Kinetic friction
Crest
Atom
4. 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.
Radioactive decay
Simple harmonic oscillator
Coefficient of linear expansion
Constructive interference
5. A quantity that possesses a magnitude but not a direction. Mass and length are common examples.
Basis vector
Convex lens
Scalar
Total internal reflection
6. A frequency - f - defined as the number of revolutions a rigid body makes in a given time interval. It is a scalar quantity commonly denoted in units of Hertz (Hz) or s-1.
Electric generator
Angular frequency
Coefficient of kinetic friction
Directly proportional
7. A unit of force: 1 N is equivalent to a 1 kg · m/s2.
Electronvolt
Wave speed
Frequency
Newton
8. 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.
Atomic number
Right-hand rule
Kepler's Third Law
Half
9. The force between two surfaces that are not moving relative to one another. The force of static friction is parallel to the plane of contact between the two objects and resists the force pushing or pulling on the object.
Torque
Tangent
Static friction
Normal
10. A wavelength - given by = h/mv - which is associated with matter. Louis de Broglie proposed the idea that matter could be treated as waves in 1923 and applied this theory successfully to small particles like electrons.
Activity
Latent heat of sublimation
De Broglie wavelength
Index of refraction
11. A scale for measuring temperature - defined such that water freezes at 0ºC and boils at 100ºC. 0ºC = 273 K.
Gamma decay
Conduction
Celsius
Atomic number
12. Heat transfer via electromagnetic waves.
Radiation
Strong nuclear force
Heat engine
Moment of inertia
13. 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.
Axis of rotation
Frequency
Angular acceleration
Completely inelastic collision
14. The application of kinematics to understand why objects move the way they do. More precisely - dynamics is the study of how forces cause motion.
Ground state
Isotope
Dynamics
Frequency
15. The distance between the focal point and the vertex of a mirror or lens. For concave mirrors and convex lenses - this number is positive. For convex mirrors and concave lenses - this number is negative.
Spring
Doppler shift
Force
Focal length
16. The ray of light that is reflected from a mirror or other reflecting surface.
Tail
Reflected ray
Inversely proportional
Vector
17. The number of hydrogen atoms in one gram of hydrogen - equal to . When counting the number of molecules in a gas - it is often convenient to count them in moles.
Coefficient of volume expansion
Direction
Mole
Free
18. The motion of a body in a circular path with constant speed.
Heat engine
Uniform circular motion
Impulse
Convex lens
19. The state of a nonrotating object upon whom the net torque acting is zero.
Cosine
Equilibrium
Force
Node
20. A measurement of a body's inertia - or resistance to being accelerated.
Mass
Constant of proportionality
De Broglie wavelength
Law of reflection
21. The phenomenon by which light traveling from a high n to a low n material will reflect from the optical interface if the incident angle is greater than the critical angle.
Diffraction
Wave
Total internal reflection
Loudness
22. The two shorter sides of a right triangle that meet at the right angle.
Legs
Kepler's First Law
Lenz's Law
Electromagnetic wave
23. 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.
Threshold frequency
Refracted ray
Nuclear fusion
Newton
24. A pulley is a simple machine that consists of a rope that slides around a disk or block.
Convex mirror
Pascals
Pulley
Electronvolt
25. The separation of different color light via refraction.
Coefficient of volume expansion
Virtual image
Distance
Dispersion
26. 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
Gravitational Potential Energy
Entropy
Collision
Uniform circular motion
27. A measure of force per unit area. Pressure is measured in N/m2 or Pa.
Pressure
Direction
Pulley
Heat engine
28. A sheet - film - or screen with a pattern of equally spaced slits. Typically the width of the slits and space between them is chosen to generate a particular diffraction pattern.
Critical angle
Universal gas constant
Diffraction grating
Unit vector
29. Light such that all of the associated waves have the same wavelength and are in phase.
Conservation of Angular Momentum
Force
Heat transfer
Coherent light
30. 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
Centripetal force
Diffraction grating
Gravitational constant
Angular velocity
31. In the Bohr model of the atom - the state in which an electron has the least energy and orbits closest to the nucleus.
Tail
Uniform circular motion
Ground state
Minima
32. 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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33. Energy associated with the state of motion. The translational kinetic energy of an object is given by the equation .
Beta decay
De Broglie wavelength
Kinetic energy
Ideal gas law
34. 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
Latent heat of sublimation
Superposition
Cycle
Weak nuclear force
35. Two materials are in thermal equilibrium if they are at the same temperature.
Tip
Hooke's Law
Absolute zero
Thermal equilibrium
36. The energy of a particle rotating around an axis.
Inertial reference frame
Gamma ray
Rotational kinetic energy
Cross product
37. The property of a vector that distinguishes it from a scalar: while scalars have only a magnitude - vectors have both a magnitude and a direction. When graphing vectors in the xy-coordinate space - direction is usually given by the angle measured cou
Node
Medium
Direction
Constructive interference
38. When dealing with reflection or refraction - the incident ray is the ray of light before it strikes the reflecting or refracting surface.
Incident ray
Diffraction
Medium
Kinetic theory of gases
39. The bending of light at the corners of objects or as it passes through narrow slits or apertures.
Tip
Bohr atomic model
Diffraction
Gamma decay
40. 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
Fundamental
Pitch
Refracted ray
41. 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
Frictional force
Component
Focal length
Phase change
42. 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
Celsius
Spring constant
Conduction
Orbit
43. 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
Velocity
Second Law of Thermodynamics
Gold foil experiment
Oscillation
44. 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.
Magnetic flux
Harmonic series
Orbit
Angular displacement
45. If a line is drawn from the sun to the planet - then the area swept out by this line in a given time interval is constant.
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46. If the net torque acting on a rigid body is zero - then the angular momentum of the body is constant or conserved.
Simple harmonic oscillator
Angular period
Polarization
Conservation of Angular Momentum
47. In an interference or diffraction pattern - the places where there is the least light.
Completely inelastic collision
Minima
Destructive interference
Photoelectron
48. The path of each planet around the sun is an ellipse with the sun at one focus.
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49. For two given media - the smallest angle of incidence at which total internal reflection occurs.
Critical angle
Temperature
Medium
Electromagnetic spectrum
50. The current induced in a circuit by a change in magnetic flux.
Newton's Second Law
Cosine
Induced current
Coefficient of volume expansion