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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. Defined as the rate at which work is done - or the rate at which energy is transformed. P is measured in joules per second (J/s) - or watts (W).
Power
Kinematic equations
Angle of reflection
Alpha particle
2. 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
Unit vector
Kelvin
Optics
3. The disorder of a system.
Angular frequency
Mechanical energy
Entropy
Node
4. An object that moves about a stable equilibrium point and experiences a restoring force that is directly proportional to the oscillator's displacement.
Centripetal acceleration
Simple harmonic oscillator
Frictional force
Convection
5. 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.
Oscillation
Conduction
Minima
Refraction
6. 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
Cross product
Weber
Law of reflection
7. 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 -
Energy
Kinetic energy
Coefficient of kinetic friction
Polarization
8. 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.
Focal length
Isolated system
Newton
Equilibrium position
9. The points midway between nodes on a standing wave - where the oscillations are largest.
Angle of reflection
Calorie
Antinode
Refraction
10. The ray of light that is refracted through a surface into a different medium.
Restoring force
Pressure
Refracted ray
Angle of reflection
11. The spectrum containing all the different kinds of electromagnetic waves - ranging in wavelength and frequency.
Tail
Electromagnetic spectrum
Electric generator
Force
12. Waves carried by variations in air pressure. The speed of sound waves in air at room temperature and pressure is roughly 343 m/s.
Isotope
Sound
Third Law of Thermodynamics
Planck's constant
13. For two given media - the smallest angle of incidence at which total internal reflection occurs.
Constant of proportionality
Equilibrium position
Critical angle
Induced current
14. The movement of a rigid body's center of mass in space.
Hooke's Law
Translational motion
Displacement
Boyle's Law
15. 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.
Spring constant
First Law of Thermodynamics
Destructive interference
Inertial reference frame
16. The process by which a solid turns directly into gas - because it cannot exist as a liquid at a certain pressure.
Threshold frequency
Tension force
Sublimation
Electromagnetic wave
17. 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.
Kinetic theory of gases
Incident ray
Vector
Convex mirror
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
Unit vector
Instantaneous velocity
Lenz's Law
19. Given the trajectory of an object or system - the center of mass is the point that has the same acceleration as the object or system as a whole would have if its mass were concentrated at that point. In terms of force - the center of mass is the poin
Velocity
Node
Center of mass
Weightlessness
20. 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.
Newton's Second Law
Impulse
Chain reaction
Kelvin
21. 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.
Speed
Sublimation
Pulley
Joule
22. The points on a standing wave where total destructive interference causes the medium to remain fixed at its equilibrium position.
Heat
Decibel
Node
Index of refraction
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.
Concave lens
Nuclear fusion
Uniform circular motion
Angle of refraction
24. The application of kinematics to understand why objects move the way they do. More precisely - dynamics is the study of how forces cause motion.
Dynamics
Acceleration
Centripetal force
Angle of incidence
25. A frequency - f - defined as the number of revolutions a rigid body makes in a given time interval. It is a scalar quantity commonly denoted in units of Hertz (Hz) or s-1.
Wave
Snell's Law
Oscillation
Angular frequency
26. The property by which a charge moving in a magnetic field creates an electric field.
Electromagnetic induction
Significant digits
Energy
Inclined plane
27. The model of the atom according to which negatively charged electrons orbit a positively charged nucleus. This model was developed by Ernest Rutherford in light of the results from his gold foil experiment.
Convection
Rutherford nuclear model
Equilibrium
Rotational kinetic energy
28. 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
Constructive interference
Superposition
Photoelectric effect
Efficiency
29. The joule (J) is the unit of work and energy. A joule is 1 N · m or 1 kg · m2/s2.
Power
Radian
Newton's First Law
Joule
30. Two materials are in thermal equilibrium if they are at the same temperature.
Thermal equilibrium
Kelvin
Radiation
Alpha particle
31. The line that every particle in the rotating rigid body circles about.
Completely inelastic collision
Law of conservation of energy
Snell's Law
Axis of rotation
32. A positively charged particle that - along with the neutron - occupies the nucleus of the atom.
Conduction
Decibel
Mechanical energy
Proton
33. 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.
Traveling waves
Pendulum
Amplitude
Significant digits
34. 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.
Rotational kinetic energy
Latent heat of vaporization
Pulley
Mass defect
35. A unit for measuring angles; also called a "rad." 2p rad = 360º.
Vertex
Radian
Newton's First Law
Joule
36. 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
Neutron
Kinetic energy
Third Law of Thermodynamics
37. A reference frame in which Newton's First Law is true. Two inertial reference frames move at a constant velocity relative to one another. According to the first postulate of Einstein's theory of special relativity - the laws of physics are the same i
Inertial reference frame
Angular displacement
Alpha decay
Maxima
38. A vector quantity - equal to the rate of change of the angular velocity vector with time. It is typically given in units of rad/s2.
Angular acceleration
Coefficient of static friction
Angular frequency
Reflected ray
39. A measurement of a body's inertia - or resistance to being accelerated.
Third Law of Thermodynamics
Heat
Mass
First Law of Thermodynamics
40. 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
Heat
Maxima
Mass defect
41. The reaction force of the ground - a table - etc. - when an object is placed upon it. The normal force is a direct consequence of Newton's Third Law: when an object is placed on the ground - the ground pushes back with the same force that it is pushe
Normal force
Acceleration
Photoelectric effect
Principal axis
42. 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.
Orbit
Index of refraction
Momentum
Latent heat of vaporization
43. An object at rest remains at rest - unless acted upon by a net force. An object in motion remains in motion - unless acted upon by a net force.
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44. A device that converts mechanical energy to electrical energy by rotating a coil in a magnetic field; sometimes called a "dynamo."
Dynamics
Force
Electric generator
Beats
45. A constant - J · s - which is useful in quantum physics. A second constant associated with Planck's constant is .
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46. A form of radioactivity where an excited atom releases a photon of gamma radiation - thereby returning to a lower energy state. The atomic structure itself does not change in the course of gamma radiation.
Zeroth Law of Thermodynamics
Boiling point
Frictional force
Gamma decay
47. The velocity at any given instant in time. To be contrasted with average velocity - which is a measure of the change in displacement over a given time interval.
Instantaneous velocity
Gravitational constant
Sound
Pitch
48. The acceleration of a body experiencing uniform circular motion. This acceleration is always directed toward the center of the circle.
Kepler's Second Law
Centripetal acceleration
Destructive interference
Temperature
49. The angle between a reflected ray and the normal.
Oscillation
Hertz (Hz)
Angle of reflection
Phase change
50. The unit of magnetic flux - equal to one T · m2.
Weight
Calorie
Tip
Weber