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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. An experiment by Ernest Rutherford that proved for the first time that atoms have nuclei.
Collision
Wave speed
Gold foil experiment
Principal axis
2. 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.
Focal point
Angular displacement
Collision
Convex lens
3. An electromagnetic wave of very high frequency.
Gamma ray
Deposition
Nuclear fission
Momentum
4. 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
Directly proportional
Inertia
Frequency
5. 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.
Directly proportional
Elastic collision
Beats
Radioactive decay
6. The center of an atom - where the protons and neutrons reside. Electrons then orbit this nucleus.
Nucleus
Sublimation
Rotational motion
Radioactive decay
7. 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
Angle of reflection
Quark
Gravitational Potential Energy
Translational kinetic energy
8. A mirror that is curved such that its center is farther from the viewer than the edges - such as the front of a spoon. Concave mirrors reflect light through a focal point.
Wave speed
Gamma ray
Period
Concave mirror
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 -
Rutherford nuclear model
Decibel
Rarefaction
Loudness
10. A model for the atom developed in 1913 by Niels Bohr. According to this model - the electrons orbiting a nucleus can only orbit at certain particular radii. Excited electrons may jump to a more distant radii and then return to their ground state - em
Angular velocity
Photon
Bohr atomic model
Heat
11. The ray of light that is reflected from a mirror or other reflecting surface.
Electric generator
Rutherford nuclear model
Total internal reflection
Reflected ray
12. For a heat engine - the ratio of work done by the engine to heat intake. Efficiency is never 100%.
Momentum
Thermal energy
Efficiency
Centripetal acceleration
13. The separation of different color light via refraction.
Dispersion
Free
Mass
Acceleration
14. 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.
Transverse waves
Newton's Third Law
Half
Destructive interference
15. 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.
Focal point
Orbit
Completely inelastic collision
Significant digits
16. When a solid - liquid - or gas changes into another phase of matter.
Wave speed
Phase change
Pendulum
Strong nuclear force
17. The time it takes a system to pass through one cycle of its repetitive motion. The period - T - is the inverse of the motion's frequency - f = 1/T.
Period
Completely inelastic collision
Normal
Electronvolt
18. The dot product of the area and the magnetic field passing through it. Graphically - it is a measure of the number and length of magnetic field lines passing through that area. It is measured in Webers (Wb).
Magnetic flux
Conservation of momentum
Electron
Decibel
19. The acceleration of a body experiencing uniform circular motion. This acceleration is always directed toward the center of the circle.
Centripetal acceleration
Centripetal force
Thermal energy
Pressure
20. 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.
Focal length
Angular displacement
Isotope
Work-energy theorem
21. In reference to oscillation - amplitude is the maximum displacement of the oscillator from its equilibrium position. Amplitude tells how far an oscillator is swinging back and forth. In periodic motion - amplitude is the maximum displacement in each
Specific heat
Maxima
Transverse waves
Amplitude
22. In the Bohr model of the atom - the state in which an electron has the least energy and orbits closest to the nucleus.
Elastic collision
Power
Ground state
Spring
23. 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.
Planck's constant
Frequency
Loudness
Moment of inertia
24. The angle between a refracted ray and the line normal to the surface.
Energy
Angle of refraction
Convection
Internal energy
25. When two waves of slightly different frequencies interfere with one another - they produce a "beating" interference pattern that alternates between constructive (in-phase) and destructive (out-of-phase). In the case of sound waves - this sort of inte
Beats
Radian
Absolute zero
Distance
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.
Diffraction grating
Axis of rotation
Gravitational Potential Energy
Temperature
27. 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
Focal point
Isolated system
Elastic collision
Work-energy theorem
28. 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.
Velocity
Efficiency
Crest
Uncertainty principle
29. The application of kinematics to understand why objects move the way they do. More precisely - dynamics is the study of how forces cause motion.
Centripetal force
Coefficient of linear expansion
Dynamics
Elastic collision
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
Phase
Angular displacement
Gravitational constant
Angular velocity
31. 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
Coefficient of static friction
Transformer
Velocity
32. 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.
Reflection
Latent heat of sublimation
Boyle's Law
Electromagnetic induction
33. The unit for measuring pressure. One Pascal is equal to one Newton per meter squared - 1 Pa = 1 N/m2.
Latent heat of vaporization
Dispersion
Heat
Pascals
34. A push or a pull that causes an object to accelerate.
Force
Electric generator
Melting point
Neutron
35. A collision in which momentum is conserved but kinetic energy is not.
Gold foil experiment
Superposition
Neutron number
Inelastic collision
36. 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.
Work-energy theorem
Convection
Orbit
Virtual image
37. A small particle-like bundle of electromagnetic radiation.
Minima
Photon
Scalar
Normal
38. The gravitational force exerted on a given mass.
Efficiency
Standing wave
Thermal equilibrium
Weight
39. A unit vector is a vector with length 1.
Traveling waves
Unit vector
Wavelength
Dynamics
40. 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.
Centripetal acceleration
Momentum
Rotational motion
Fundamental
41. The temperature at which a material will change phase from liquid to gas or gas to liquid.
Velocity
Convex lens
Boiling point
Threshold frequency
42. The motion of a body in a circular path with constant speed.
De Broglie wavelength
Electronvolt
Polarization
Uniform circular motion
43. The stable position of a system where the net force acting on the object is zero.
Optics
Focal point
Equilibrium position
Beats
44. 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.
System
Photoelectron
Decay constant
Nuclear fusion
45. A system that no external net force acts upon. Objects within the system may exert forces upon one another - but they cannot receive any impulse from outside forces. Momentum is conserved in isolated systems.
Isolated system
Dot product
Refraction
Angular frequency
46. 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.
Loudness
Coefficient of static friction
Reflect
Coherent light
47. The tendency of an object to remain at a constant velocity - or its resistance to being accelerated. Newton's First Law is alternatively called the Law of Inertia because it describes this tendency.
Beats
Conservation of Angular Momentum
Inertia
Phase
48. The spectrum containing all the different kinds of electromagnetic waves - ranging in wavelength and frequency.
Rarefaction
Michelson-Morley experiment
Chain reaction
Electromagnetic spectrum
49. The line perpendicular to a surface. There is only one normal for any given surface.
Power
Photoelectric effect
Normal
Angular momentum
50. A law - || = - which states that the induced emf is the change in magnetic flux in a certain time.
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