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Test your basic knowledge |
SAT Subject Test: hysics
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Study First
Subjects
:
sat
,
science
,
physics
Instructions:
Answer 50 questions in 15 minutes.
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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 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.
Harmonic series
Cross product
Gamma decay
Focal length
2. The index of refraction n = c/v of a substance characterizes the speed of light in that substance - v. It also characterizes - by way of Snell's Law - the angle at which light refracts in that substance.
Boyle's Law
Legs
Phase
Index of refraction
3. Body diagram- Illustrates the forces acting on an object - drawn as vectors originating from the center of the object.
Free
Distance
Cosine
Crest
4. An area of high air pressure that acts as the wave crest for sound waves. The spacing between successive compressions is the wavelength of sound - and the number of successive areas of compression that arrive at the ear per second is the frequency -
Compression
Strong nuclear force
System
Internal energy
5. 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
Mass
Destructive interference
Directly proportional
6. An electromagnetic wave of very high frequency.
Refraction
Bohr atomic model
Gamma ray
Centripetal acceleration
7. 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.
Weber
Isotope
First Law of Thermodynamics
Displacement
8. Heat transfer by molecular collisions.
Third Law of Thermodynamics
Scalar
Conduction
Gamma decay
9. The property by which a changing current in one coil of wire induces an emf in another.
Alpha decay
Mutual Induction
Pulley
Superposition
10. A unit for measuring angles; also called a "rad." 2p rad = 360º.
Component
Translational kinetic energy
Latent heat of vaporization
Radian
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
Conservation of momentum
Longitudinal waves
Threshold frequency
Collision
12. In an interference or diffraction pattern - the places where there is the least light.
Photoelectric effect
Axis of rotation
Latent heat of vaporization
Minima
13. The state of a nonrotating object upon whom the net torque acting is zero.
Radiation
Constant of proportionality
Equilibrium
Equilibrium position
14. 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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15. 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
Speed
Spring constant
Law of conservation of energy
16. The longest side of a right triangle - opposite to the right angle.
Frequency
Hypotenuse
Alpha particle
Heat
17. The angle between a refracted ray and the line normal to the surface.
Celsius
Minima
Angle of refraction
Sublimation
18. 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.
De Broglie wavelength
Restoring force
Sound
Pascals
19. A unit of measurement for energy on atomic levels. 1 eV = J.
Radioactivity
Electronvolt
Thermal energy
Potential energy
20. 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.
Pascals
Rutherford nuclear model
Weightlessness
Newton
21. A device that converts mechanical energy to electrical energy by rotating a coil in a magnetic field; sometimes called a "dynamo."
Electric generator
Absolute zero
Melting point
Joule
22. 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
Scalar
Trough
Concave mirror
23. The force that binds protons and neutrons together in the atomic nucleus.
Beta decay
Work-energy theorem
Strong nuclear force
Nucleus
24. 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
Alpha decay
Law of reflection
Specific heat
Direction
25. An object is called radioactive if it undergoes radioactive decay.
Pitch
Work-energy theorem
Radioactivity
Normal
26. The bending of light at the corners of objects or as it passes through narrow slits or apertures.
Gravitational constant
Wave speed
Diffraction
Crest
27. The points of maximum negative displacement along a wave. They are the opposite of wave crests.
Gravitational constant
Phase
Trough
Pitch
28. 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.
Virtual image
Phase change
Minima
Isotope
29. A back-and-forth movement about an equilibrium position. Springs - pendulums - and other oscillators experience harmonic motion.
Neutron
Completely inelastic collision
Oscillation
Nuclear fusion
30. An object cannot be cooled to absolute zero.
Nuclear fission
Kepler's Third Law
Electric generator
Third Law of Thermodynamics
31. 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
Dispersion
Diffraction grating
Sublimation
Mechanical energy
32. 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.
Atom
Velocity
Weight
Isolated system
33. Waves produced by a source that is moving with respect to the observer will seem to have a higher frequency and smaller wavelength if the motion is towards the observer - and a lower frequency and longer wavelength if the motion is away from the obse
Kepler's Second Law
Angular displacement
Doppler shift
Sound
34. 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
Threshold frequency
Gamma ray
Phase change
35. 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.
Speed
Instantaneous velocity
Moment of inertia
Ideal gas law
36. The principle stating that for any isolated system - linear momentum is constant with time.
Electronvolt
Phase change
Conservation of momentum
Coefficient of kinetic friction
37. The gravitational force exerted on a given mass.
Pendulum
Center of curvature
Weight
Optics
38. 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.
Electromagnetic wave
Dispersion
Translational kinetic energy
Nuclear fusion
39. The two shorter sides of a right triangle that meet at the right angle.
Weak nuclear force
Loudness
Legs
Internal energy
40. A form of vector multiplication - where two vectors are multiplied to produce a scalar. The dot product of two vectors - A and B - is expressed by the equation A · B = AB cos .
Dot product
Inertial reference frame
Kinematic equations
Joule
41. A coefficient that tells how much a material will expand or contract lengthwise when it is heated or cooled.
Convex mirror
Coefficient of linear expansion
Rarefaction
Inversely proportional
42. The distance between successive wave crests - or troughs. Wavelength is measured in meters and is related to frequency and wave speed by = v/f.
Third Law of Thermodynamics
Focal point
Wavelength
Node
43. The process by which a gas turns directly into a solid because it cannot exist as a liquid at certain pressures.
Inertia
Pressure
Cross product
Deposition
44. A rough approximation of how gases work - that is quite accurate in everyday conditions. According to the kinetic theory - gases are made up of tiny - round molecules that move about in accordance with Newton's Laws - and collide with one another and
Basis vector
Constant of proportionality
Electric generator
Kinetic theory of gases
45. Heat transfer via electromagnetic waves.
Phase change
Crest
Kinematics
Radiation
46. The stable position of a system where the net force acting on the object is zero.
Gold foil experiment
Angular momentum
Compression
Equilibrium position
47. The path of each planet around the sun is an ellipse with the sun at one focus.
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48. A scale for measuring temperature - defined such that 0K is the lowest theoretical temperature a material can have. 273K = 0ºC.
Convex lens
Constructive interference
Spring
Kelvin
49. A negatively charged particle that orbits the nucleus of the atom.
Neutrino
Electron
Focal length
Angle of incidence
50. Another word for the frequency of a sound wave.
Pitch
Decay constant
Polarization
Electron
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