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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. The distance between successive wave crests - or troughs. Wavelength is measured in meters and is related to frequency and wave speed by = v/f.
Law of reflection
Faraday's Law
Wavelength
Fundamental
2. 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.
Meson
Mole
Neutron number
Convex mirror
3. Occurs when every point in the rigid body moves in a circular path around a line called the axis of rotation.
Photoelectron
Harmonic series
Magnitude
Rotational motion
4. The bending of light as it passes from one medium to another. Light refracts toward the normal when going from a less dense medium into a denser medium and away from the normal when going from a denser medium into a less dense medium.
System
Displacement
Refraction
Power
5. 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.
Temperature
Isolated system
Electromagnetic wave
Translational kinetic energy
6. 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.
Reflect
Equilibrium
Momentum
Thermal energy
7. A vector quantity defined as the product of the force acting on a body multiplied by the time interval over which the force is exerted.
Impulse
Universal gas constant
Pendulum
Concave mirror
8. 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
Inversely proportional
Pendulum
Restoring force
Weber
9. The straight line that runs through the focal point and the vertex of a mirror or lens.
Latent heat of transformation
Principal axis
Law of conservation of energy
Internal energy
10. A coefficient that tells how much a material will expand or contract lengthwise when it is heated or cooled.
Energy
Chain reaction
Coefficient of linear expansion
Latent heat of vaporization
11. 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.
Gravitational Potential Energy
Refraction
Nuclear fusion
Gamma decay
12. A body or set of bodies that we choose to analyze as a group.
System
Equilibrium position
Phase change
Sound
13. The longest side of a right triangle - opposite to the right angle.
Hypotenuse
Legs
Spring constant
Center of mass
14. The amount of heat needed to raise the temperature of one gram of water by one degree Celsius. 1 cal = 4.19 J.
Newton's First Law
Inversely proportional
Calorie
Weber
15. 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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16. A law - || = - which states that the induced emf is the change in magnetic flux in a certain time.
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17. Also called a converging lens - a lens that is thicker in the middle than at the edges. Convex lenses refract light through a focal point.
Electric generator
Inertial reference frame
Atomic number
Convex lens
18. 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.
Kepler's First Law
Focal length
Minima
Zeroth Law of Thermodynamics
19. The unit for measuring pressure. One Pascal is equal to one Newton per meter squared - 1 Pa = 1 N/m2.
Pascals
First Law of Thermodynamics
Specific heat
Boyle's Law
20. 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.
Total internal reflection
Nuclear fission
Velocity
Static friction
21. 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.
Centripetal force
Mass number
Angle of reflection
Activity
22. 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.
Static friction
Rotational motion
Coherent light
Heat
23. 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
Mechanical energy
Longitudinal waves
Proton
24. The points midway between nodes on a standing wave - where the oscillations are largest.
Alpha decay
Third Law of Thermodynamics
Equilibrium position
Antinode
25. 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.
Superposition
Planck's constant
Phase change
Concave lens
26. 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
Gravitational constant
Cross product
Center of mass
Magnetic flux
27. 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
Gravitational Potential Energy
Frictional force
Convex mirror
Internal energy
28. The cancellation of one wave by another wave that is exactly out of phase with the first. Despite the dramatic name of this phenomenon - nothing is "destroyed" by this interference—the two waves emerge intact once they have passed each other.
Beta particle
Destructive interference
Mole
Compression
29. 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.
Incident ray
Absolute zero
Conservation of Angular Momentum
Spring
30. If the net torque acting on a rigid body is zero - then the angular momentum of the body is constant or conserved.
Half
Mass defect
Efficiency
Conservation of Angular Momentum
31. States that the net work done on an object is equal to the object's change in kinetic energy.
Photoelectron
Melting point
Bohr atomic model
Work-energy theorem
32. Energy associated with an object's position in space - or configuration in relation to other objects. This is a latent form of energy - where the amount of potential energy reflects the amount of energy that potentially could be released as kinetic e
Potential energy
Gravitational Potential Energy
Conduction
Convex mirror
33. A particle - identical to an electron. Beta particles are ejected from an atom in the process of beta decay.
Beta particle
Photoelectron
Neutrino
First Law of Thermodynamics
34. 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.
Neutron
Electromagnetic wave
Component
Normal force
35. 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.
Diffraction
Kinetic theory of gases
Electromagnetic induction
Law of reflection
36. 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.
Equilibrium
Work function
Translational kinetic energy
Induced current
37. 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.
Pressure
Electromagnetic spectrum
Activity
Collision
38. 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.
Neutron number
Orbit
Convex lens
Heat transfer
39. A system with many parts in periodic - or repetitive - motion. The oscillations in one part cause vibrations in nearby parts.
Uncertainty principle
Angle of incidence
Induced current
Wave
40. 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
Right-hand rule
Angular velocity
Phase change
Isotope
41. An object that retains its overall shape - meaning that the particles that make up the rigid body stay in the same position relative to one another.
Rigid body
Gamma decay
Third Law of Thermodynamics
Legs
42. A quantity that possesses a magnitude but not a direction. Mass and length are common examples.
Scalar
Equilibrium position
Destructive interference
Dispersion
43. With spherical mirrors - the radius of the sphere of which the mirror is a part.
Celsius
Radius of curvature
Axis of rotation
Mass defect
44. A small particle-like bundle of electromagnetic radiation.
Radioactive decay
Latent heat of fusion
Photon
Oscillation
45. A unit vector is a vector with length 1.
Velocity
Magnification
Isolated system
Unit vector
46. An object is called radioactive if it undergoes radioactive decay.
Radioactivity
Kepler's Second Law
Pendulum
Focal point
47. Waves that oscillate in the same direction as the propagation of the wave. Sound is carried by longitudinal waves - since the air molecules move back and forth in the same direction the sound travels.
Mechanical energy
Cycle
Principal axis
Longitudinal waves
48. When electromagnetic radiation shines upon a metal - the surface of the metal releases energized electrons. The way in which these electrons are released contradicts classical theories of electromagnetic radiation and supports the quantum view accord
Photoelectric effect
Angular frequency
Acceleration
Diffraction grating
49. The ray of light that is reflected from a mirror or other reflecting surface.
Margin of error
Entropy
Refraction
Reflected ray
50. 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 - .
Rigid body
Fundamental
Inclined plane
Decibel