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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. In the graphical representation of vectors - the tip of the arrow is the pointy end.
Loudness
Tip
Second Law of Thermodynamics
Latent heat of sublimation
2. A vector quantity - commonly denoted by the vector s - which reflects an object's change in spatial position. The displacement vector points from the object's starting position to the object's current position in space. If an object is moved from poi
Center of curvature
Medium
Normal
Displacement
3. 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.
Frictional force
Real image
Frequency
Induced current
4. An electromagnetic wave of very high frequency.
Centripetal force
Hooke's Law
Doppler shift
Gamma ray
5. For a gas held at constant pressure - temperature and volume are directly proportional.
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6. To every action - there is an equal and opposite reaction. If an object A exerts a force on another object B - B will exert on A a force equal in magnitude and opposite in direction to the force exerted by A.
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7. 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.
Diffraction grating
Normal force
Significant digits
Rotational kinetic energy
8. The center of an atom - where the protons and neutrons reside. Electrons then orbit this nucleus.
Nucleus
Motional emf
Melting point
Mechanical energy
9. 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 -
Nuclear fusion
Rarefaction
Spring
Angular acceleration
10. 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.
Dynamics
Hertz (Hz)
Isotope
Gravitational constant
11. 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
Pascals
Conservation of momentum
Transformer
Polarization
12. With spherical mirrors - the radius of the sphere of which the mirror is a part.
Temperature
Radius of curvature
Harmonic series
Constructive interference
13. 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.
Spectroscope
Concave lens
Photoelectron
Right-hand rule
14. In radioactive substances - the number of nuclei that decay per second. Activity - A - will be larger in large samples of radioactive material - since there will be more nuclei.
Activity
Impulse
Inclined plane
Translational motion
15. The net change - - in a point's angular position - . It is a scalar quantity.
Angular displacement
Angular momentum
Dynamics
Simple harmonic oscillator
16. A scalar quantity that tells us how fast an object is moving. It measures the rate of change in distance over time. Speed is to be contrasted with velocity in that there is no direction associated with speed.
Displacement
Pulley
Rotational kinetic energy
Speed
17. The mass difference between a nucleus and the sum of the masses of the constituent protons and neutrons.
Newton's Law of Universal Gravitation
Standing wave
Mass defect
Impulse
18. 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.
Strong nuclear force
Cycle
Electromagnetic wave
Magnitude
19. A conserved scalar quantity associated with the state or condition of an object or system of objects. We can roughly define energy as the capacity for an object or system to do work. There are many different types of energy - such as kinetic energy -
Boyle's Law
Energy
Mass number
Chain reaction
20. 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
Rarefaction
Direction
Total internal reflection
Proton
21. A transfer of thermal energy. We don't speak about systems "having" heat - but about their "transferring" heat - much in the way that dynamical systems don't "have" work - but rather "do" work.
Sound
Kepler's First Law
Heat
Spectroscope
22. The square of the amplitude of a sound wave is called the sound's loudness - or volume.
Phase
Gravitational Potential Energy
Loudness
Spring
23. 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
Spring constant
Basis vector
Phase
Meson
24. A coefficient that tells how much the volume of a solid will change when it is heated or cooled.
Oscillation
Chain reaction
Constant of proportionality
Coefficient of volume expansion
25. The disorder of a system.
First Law of Thermodynamics
Entropy
Reflected ray
Directly proportional
26. A measure of the average kinetic energy of the molecules in a system. Temperature is related to heat by the specific heat of a given substance.
System
Spring constant
Magnification
Temperature
27. For two given media - the smallest angle of incidence at which total internal reflection occurs.
Activity
Critical angle
Transformer
Loudness
28. 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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29. States that the net work done on an object is equal to the object's change in kinetic energy.
Kepler's Second Law
Work-energy theorem
Absolute zero
Temperature
30. The force that binds protons and neutrons together in the atomic nucleus.
Total internal reflection
Strong nuclear force
Heat
Equilibrium
31. The acceleration of a body experiencing uniform circular motion. This acceleration is always directed toward the center of the circle.
Pitch
Concave mirror
Centripetal acceleration
Tangent
32. Given the period - T - and semimajor axis - a - of a planet's orbit - the ratio is the same for every planet.
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33. 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
Calorie
Angular frequency
Spring constant
Transformer
34. 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
Cross product
Spring
Fundamental
Real image
35. A system with many parts in periodic - or repetitive - motion. The oscillations in one part cause vibrations in nearby parts.
Oscillation
Wave
Lenz's Law
Optics
36. In an interference or diffraction pattern - the places where there is the most light.
Power
Maxima
Beats
Second Law of Thermodynamics
37. 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
Rotational motion
Beta particle
Crest
Angular velocity
38. 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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39. 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.
Meson
Unit vector
Velocity
Angular frequency
40. The force transmitted along a rope or cable.
Tension force
Reflection
Loudness
Inertia
41. 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.
Kepler's First Law
Direction
Weightlessness
Sine
42. The amount of heat necessary for a material undergoing sublimation to make a phase change from gas to solid or solid to gas - without a change in temperature.
Uniform circular motion
Latent heat of sublimation
Sublimation
Beta decay
43. A transfer of thermal energy from one system to another.
Heat transfer
Energy
Angle of reflection
Axis of rotation
44. 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
Angle of reflection
Polarization
Frictional force
Electromagnetic induction
45. Heat transfer via electromagnetic waves.
Static friction
Polarization
Decay constant
Radiation
46. A property of a metal - the minimum frequency of electromagnetic radiation that is necessary to release photoelectrons from that metal.
Threshold frequency
Alpha decay
Restoring force
Neutron number
47. 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.
Kinetic friction
Coefficient of volume expansion
Electromagnetic wave
Collision
48. A collision in which momentum is conserved but kinetic energy is not.
Inelastic collision
Threshold frequency
Scalar
Angular acceleration
49. 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.
Convex mirror
Weber
Angular displacement
Traveling waves
50. 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.
Angular displacement
Kinetic energy
Latent heat of vaporization
Newton's Second Law