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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. 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.
Tip
Mechanical energy
Efficiency
Orbit
2. The disorder of a system.
Entropy
Meson
Kelvin
Coefficient of kinetic friction
3. The cosine of an angle in a right triangle is equal to the length of the side adjacent to the angle divided by the length of the hypotenuse.
Weber
Medium
Cosine
Center of mass
4. The coefficient of static friction - for two materials is the constant of proportionality between the normal force and the maximum force of static friction. It is always a number between zero and one.
Electric generator
Coefficient of static friction
Kepler's Third Law
Radius of curvature
5. A particle - identical to an electron. Beta particles are ejected from an atom in the process of beta decay.
System
Pressure
Beta particle
Coherent light
6. 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 friction
Convex mirror
Sublimation
Harmonic series
7. An object is called radioactive if it undergoes radioactive decay.
Tension force
Melting point
Radioactivity
Superposition
8. The bending of light at the corners of objects or as it passes through narrow slits or apertures.
Diffraction
Ideal gas law
Restoring force
Isotope
9. The points of maximum displacement along a wave. In traveling waves - the crests move in the direction of propagation of the wave. The crests of standing waves - also called anti-nodes - remain in one place.
Crest
Concave mirror
Strong nuclear force
Convex lens
10. The amount of heat necessary to transform a solid at a given temperature into a liquid of the same temperature - or the amount of heat needed to be removed from a liquid of a given temperature to transform it into a solid of the same temperature.
Second Law of Thermodynamics
Angular momentum
Latent heat of fusion
Wavelength
11. A process that aligns a wave of light to oscillate in one dimension rather than two.
Kepler's First Law
Hypotenuse
Polarization
Scalar
12. For a gas held at a constant temperature - pressure and volume are inversely proportional.
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13. A device made of two coils - which converts current of one voltage into current of another voltage. In a step-up transformer - the primary coil has fewer turns than the secondary - thus increasing the voltage. In a step-down transformer - the seconda
Refracted ray
Transformer
Angular period
Transverse waves
14. 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
Photoelectric effect
Lenz's Law
Threshold frequency
15. 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
Right-hand rule
Decay constant
Electronvolt
Focal point
16. The study of the properties of visible light - i.e. - the portion of the electromagnetic spectrum with wavelengths between 360 and 780 nm (1 nm = m/s).
Centripetal force
Pendulum
Optics
Crest
17. 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.
Concave mirror
Angle of refraction
Kinetic friction
Radian
18. 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.
Normal force
Mole
Speed
Concave lens
19. The square of the amplitude of a sound wave is called the sound's loudness - or volume.
Weightlessness
Loudness
Antinode
Harmonic series
20. 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.
Kinetic theory of gases
Inertial reference frame
Focal length
Convex mirror
21. A push or a pull that causes an object to accelerate.
Normal
Efficiency
Kinetic friction
Force
22. The energy of a particle rotating around an axis.
Newton's First Law
Angular position
Moment of inertia
Rotational kinetic energy
23. For an oscillating spring - the restoring force exerted by the spring is directly proportional to the displacement. That is - the more the spring is displaced - the stronger the force that will pull toward the equilibrium position. This law is expres
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24. Indicates how "bouncy" or "stiff" a spring is. More specifically - the spring constant - k - is the constant of proportionality between the restoring force exerted by the spring - and the spring's displacement from equilibrium. The greater the value
Angle of reflection
Pendulum
Dispersion
Spring constant
25. A unit vector is a vector with length 1.
Convex mirror
Normal
Meson
Unit vector
26. With spherical mirrors - the center of the sphere of which the mirror is a part. All of the normals pass through it.
Coefficient of linear expansion
Angular frequency
Center of curvature
Medium
27. 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.
Kepler's Second Law
Conservation of momentum
Destructive interference
Nuclear fission
28. A scale for measuring temperature - defined such that water freezes at 0ºC and boils at 100ºC. 0ºC = 273 K.
Celsius
Rutherford nuclear model
Rigid body
Destructive interference
29. To every action - there is an equal and opposite reaction. If an object A exerts a force on another object B - B will exert on A a force equal in magnitude and opposite in direction to the force exerted by A.
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30. The unit of magnetic flux - equal to one T · m2.
Longitudinal waves
Real image
Weber
Angular acceleration
31. 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.
Radioactive decay
Angular period
Newton's Second Law
Displacement
32. A form of radioactive decay where a heavy element emits an alpha particle and some energy - thus transforming into a lighter - more stable - element.
Wave speed
Compression
Latent heat of transformation
Alpha decay
33. 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.
Kinetic theory of gases
Gamma decay
Gravitational Potential Energy
Radioactivity
34. A negatively charged particle that orbits the nucleus of the atom.
Angular frequency
Transverse waves
Boiling point
Electron
35. For a heat engine - the ratio of work done by the engine to heat intake. Efficiency is never 100%.
Magnification
Thermal equilibrium
Efficiency
Angular position
36. The center of a mirror or lens.
Heat engine
Sound
Longitudinal waves
Vertex
37. A pulley is a simple machine that consists of a rope that slides around a disk or block.
Pulley
Electron
Newton's Third Law
Photoelectric effect
38. Light such that all of the associated waves have the same wavelength and are in phase.
Kinetic friction
Coherent light
Celsius
Wave speed
39. A unit of force: 1 N is equivalent to a 1 kg · m/s2.
Newton
Vertex
Scalar
Boiling point
40. 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.
Rutherford nuclear model
Equilibrium position
Normal
Thermal equilibrium
41. The process by which a gas turns directly into a solid because it cannot exist as a liquid at certain pressures.
Second Law of Thermodynamics
Wave
Deposition
Conservation of Angular Momentum
42. For two given media - the smallest angle of incidence at which total internal reflection occurs.
Conservation of momentum
Mechanical energy
Spectroscope
Critical angle
43. The time - T - required for a rigid body to complete one revolution.
Beta decay
Angular period
Radioactivity
Pascals
44. Relates the angle of incidence to the angle of refraction: .
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45. A vector quantity - or vector - is an object possessing - and fully described by - a magnitude and a direction. Graphically a vector is depicted as an arrow with its magnitude given by the length of the arrow and its direction given by where the arro
Inertia
Vector
Newton's Second Law
Fundamental
46. The amount heat necessary to cause a substance to undergo a phase transition.
Latent heat of transformation
Tension force
Joule
Oscillation
47. 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
Free
Atomic number
Center of mass
Pascals
48. The energy stored in a thermodynamic system.
Constant of proportionality
Zeroth Law of Thermodynamics
Rutherford nuclear model
Internal energy
49. The state of a nonrotating object upon whom the net torque acting is zero.
Weightlessness
Radiation
Equilibrium
Alpha particle
50. The ray of light that is reflected from a mirror or other reflecting surface.
Reflected ray
Frictional force
Phase
Phase change