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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 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
Sublimation
Frictional force
Electromagnetic wave
Spring constant
2. The movement of a rigid body's center of mass in space.
Translational motion
Axis of rotation
Decay constant
Proton
3. The units of frequency - defined as inverse-seconds (1 Hz = 1 s-1). "Hertz" can be used interchangeably with "cycles per second."
Mutual Induction
Gamma ray
Hertz (Hz)
Specific heat
4. 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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5. In an interference or diffraction pattern - the places where there is the most light.
Scalar
Half
Maxima
Boiling point
6. The process by which a solid turns directly into gas - because it cannot exist as a liquid at a certain pressure.
Latent heat of fusion
Boiling point
Sublimation
Gravitational constant
7. The property by which a charge moving in a magnetic field creates an electric field.
Kepler's First Law
Conservation of momentum
Electromagnetic induction
Proton
8. For a reflected light ray - . In other words - a ray of light reflects of a surface in the same plane as the incident ray and the normal - and at an angle to the normal that is equal to the angle between the incident ray and the normal.
Rigid body
Inertia
Law of reflection
Chain reaction
9. 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
Coefficient of linear expansion
Equilibrium
Medium
Directly proportional
10. When a light ray strikes a surface - the angle of incidence is the angle between the incident ray and the normal.
De Broglie wavelength
Pressure
Electronvolt
Angle of incidence
11. 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
Latent heat of vaporization
Coefficient of static friction
Threshold frequency
12. 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.
Displacement
Tail
Planck's constant
Activity
13. A coefficient that tells how much a material will expand or contract lengthwise when it is heated or cooled.
Orbit
Weightlessness
Angular period
Coefficient of linear expansion
14. The net change - - in a point's angular position - . It is a scalar quantity.
Center of curvature
Melting point
Heat
Angular displacement
15. The points midway between nodes on a standing wave - where the oscillations are largest.
Heat
Work
Centripetal force
Antinode
16. Essentially a restatement of energy conservation - it states that the change in the internal energy of a system is equal to the heat added plus the work done on the system.
Induced current
First Law of Thermodynamics
Planck's constant
Medium
17. 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.
Latent heat of vaporization
Doppler shift
Coefficient of kinetic friction
Photoelectron
18. 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.
Heat
Reflection
Collision
Angle of reflection
19. A pendulum consists of a bob connected to a rod or rope. At small angles - a pendulum's motion approximates simple harmonic motion as it swings back and forth without friction.
Specific heat
De Broglie wavelength
Pendulum
Weight
20. A body or set of bodies that we choose to analyze as a group.
Pascals
System
Half
Isolated system
21. The force involved in beta decay that changes a proton to a neutron and releases an electron and a neutrino.
Weak nuclear force
Newton's Second Law
Basis vector
Displacement
22. The number of digits that have been accurately measured. When combining several measurements in a formula - the resulting calculation can only have as many significant digits as the measurement that has the smallest number of significant digits.
Tail
Significant digits
Latent heat of vaporization
Center of mass
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.
Efficiency
Angular velocity
Nuclear fusion
Translational motion
24. Light such that all of the associated waves have the same wavelength and are in phase.
Magnification
Boiling point
Coherent light
Angular acceleration
25. 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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26. A wave on a string that is tied to a pole at one end will reflect back toward its source - producing a wave that is the mirror-image of the original and which travels in the opposite direction.
Heat engine
Law of conservation of energy
Strong nuclear force
Reflect
27. 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
Electromagnetic induction
Celsius
Mechanical energy
Reflected ray
28. The process by which a gas turns directly into a solid because it cannot exist as a liquid at certain pressures.
Nuclear fusion
Alpha particle
Deposition
Quark
29. If the net torque acting on a rigid body is zero - then the angular momentum of the body is constant or conserved.
Nuclear fission
Real image
Conservation of Angular Momentum
Internal energy
30. 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
Threshold frequency
Wavelength
Focal point
Radioactive decay
31. A rigid body's resistance to being rotated. The moment of inertia for a single particle is MR2 - where M is the mass of the rigid body and R is the distance to the rotation axis. For rigid bodies - calculating the moment of inertia is more complicate
Standing wave
Snell's Law
Moment of inertia
Oscillation
32. 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.
Tangent
Kepler's Second Law
De Broglie wavelength
Virtual image
33. 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.
Reflection
Speed
Mass
Elastic collision
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
Mechanical energy
Free
Newton
Cross product
35. The separation of different color light via refraction.
Rigid body
Radioactive decay
Dispersion
Amplitude
36. 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.
Beats
Mass
Velocity
Normal
37. 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.
Acceleration
Axis of rotation
Mole
Joule
38. The amount heat necessary to cause a substance to undergo a phase transition.
Node
Newton's Law of Universal Gravitation
Latent heat of transformation
Deposition
39. 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.
Frequency
Kinetic energy
Entropy
Doppler shift
40. A scale for measuring temperature - defined such that 0K is the lowest theoretical temperature a material can have. 273K = 0ºC.
Wavelength
Entropy
Kelvin
Nucleus
41. A particle - identical to an electron. Beta particles are ejected from an atom in the process of beta decay.
Beta particle
Alpha decay
Electromagnetic induction
Center of curvature
42. The longest side of a right triangle - opposite to the right angle.
Vertex
Hypotenuse
Focal length
Polarization
43. Waves in which the medium moves in the direction perpendicular to the propagation of the wave. Waves on a stretched string - water waves - and electromagnetic waves are all examples of transverse waves.
Sublimation
Universal gas constant
Transverse waves
Optics
44. A unit of force: 1 N is equivalent to a 1 kg · m/s2.
Proton
Pressure
Constructive interference
Newton
45. A measurement of a body's inertia - or resistance to being accelerated.
Reflection
Latent heat of transformation
Mass
Static friction
46. In a right triangle - the tangent of a given angle is the length of the side opposite the angle divided by the length of the side adjacent to the triangle.
Tangent
Third Law of Thermodynamics
Pendulum
Quark
47. 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.
Translational kinetic energy
Coefficient of kinetic friction
Universal gas constant
Node
48. 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
Cycle
Force
Angular frequency
Phase change
49. A logorithmic unit for measuring the volume of sound - which is the square of the amplitude of sound waves.
Law of reflection
Mass defect
Decibel
Faraday's Law
50. Linear momentum - p - commonly called "momentum" for short - is a vector quantity defined as the product of an object's mass - m - and its velocity - v.
Compression
Momentum
Energy
Longitudinal waves