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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. A number - Z - associated with the number of protons in the nucleus of an atom. Every element can be defined in s of its atomic number - since every atom of a given element has the same number of protons.
Gamma decay
Atomic number
Inclined plane
Uniform circular motion
2. Two materials are in thermal equilibrium if they are at the same temperature.
Thermal equilibrium
Center of mass
Nucleus
Equilibrium
3. 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.
Node
Minima
Nuclear fusion
Translational kinetic energy
4. A form of radioactive decay where a heavy element ejects a beta particle and a neutrino - becoming a lighter element in the process.
Tail
Inertia
Beta decay
Work function
5. 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.
Coefficient of linear expansion
Significant digits
First Law of Thermodynamics
Longitudinal waves
6. 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
Kinetic theory of gases
Universal gas constant
Destructive interference
Vector
7. The building blocks of all matter - quarks are the constituent parts of protons - neutrons - and mesons.
Crest
Latent heat of vaporization
Quark
Tension force
8. A collision in which momentum is conserved but kinetic energy is not.
Sublimation
Inelastic collision
Force
Decibel
9. The net change - - in a point's angular position - . It is a scalar quantity.
Charles's Law
Angular displacement
Pulley
Power
10. 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.
Dot product
Efficiency
Coefficient of static friction
Hertz (Hz)
11. The ray of light that is reflected from a mirror or other reflecting surface.
Rigid body
Reflected ray
Atomic number
Cross product
12. Two oscillators that have the same frequency and amplitude - but reach their maximum displacements at different times - are said to have different phases. Similarly - two waves are in phase if their crests and troughs line up exactly - and they are o
Minima
Axis of rotation
Polarization
Phase
13. The acceleration of a body experiencing uniform circular motion. This acceleration is always directed toward the center of the circle.
Neutrino
Weak nuclear force
Beta particle
Centripetal acceleration
14. Body diagram- Illustrates the forces acting on an object - drawn as vectors originating from the center of the object.
Neutrino
Coefficient of kinetic friction
Free
Instantaneous velocity
15. The separation of different color light via refraction.
Ideal gas law
Inelastic collision
Dispersion
Absolute zero
16. The number of hydrogen atoms in one gram of hydrogen - equal to . When counting the number of molecules in a gas - it is often convenient to count them in moles.
Mole
Heat engine
Node
Restoring force
17. The process by which a solid turns directly into gas - because it cannot exist as a liquid at a certain pressure.
Destructive interference
Sublimation
Margin of error
Work-energy theorem
18. 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.
Significant digits
Rotational motion
Beta particle
Constant of proportionality
19. A pulley is a simple machine that consists of a rope that slides around a disk or block.
Kinetic energy
Index of refraction
Hertz (Hz)
Pulley
20. 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
Normal force
Collision
Frictional force
Latent heat of vaporization
21. A particle - which consists of two protons and two neutrons. It is identical to the nucleus of a helium atom and is ejected by heavy particles undergoing alpha decay.
Internal energy
Rutherford nuclear model
Mole
Alpha particle
22. Heat transfer by molecular collisions.
Boiling point
Potential energy
Static friction
Conduction
23. The current induced in a circuit by a change in magnetic flux.
Bohr atomic model
Induced current
Cycle
Pascals
24. 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.
Concave mirror
Destructive interference
Focal length
Elastic collision
25. The coefficient of kinetic friction - - for two materials is the constant of proportionality between the normal force and the force of kinetic friction. It is always a number between zero and one.
Inclined plane
Coefficient of kinetic friction
Kepler's Second Law
Heat engine
26. 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
Motional emf
Electromagnetic spectrum
Margin of error
Vector
27. When dealing with reflection or refraction - the incident ray is the ray of light before it strikes the reflecting or refracting surface.
Heat
Reflection
Incident ray
Joule
28. A principle derived by Werner Heisenberg in 1927 that tells us that we can never know both the position and the momentum of a particle at any given time.
Pressure
Uncertainty principle
Rutherford nuclear model
Inversely proportional
29. 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.
Force
Normal
Cosine
Electromagnetic wave
30. The name of an electron released from the surface of a metal due to the photoelectric effect.
Photoelectron
Transformer
Tail
Angular frequency
31. A rigid body's resistance to being rotated. The moment of inertia for a single particle is MR2 - where M is the mass of the rigid body and R is the distance to the rotation axis. For rigid bodies - calculating the moment of inertia is more complicate
Celsius
Moment of inertia
Legs
Induced current
32. Any vector can be expressed as the sum of two mutually perpendicular component vectors. Usually - but not always - these components are multiples of the basis vectors - and ; that is - vectors along the x-axis and y-axis. We define these two vectors
Activity
Directly proportional
Normal
Component
33. 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.
Uniform circular motion
Nuclear fusion
Crest
Kinetic theory of gases
34. 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.
Snell's Law
Electronvolt
Right-hand rule
Concave lens
35. The energy of the molecules that make up an object. It is related to heat - which is the amount of energy transferred from one object to another object that is a different temperature.
Thermal energy
Minima
Refraction
Angular frequency
36. 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.
Neutron number
Reflected ray
Speed
Incident ray
37. 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.
Ground state
Law of reflection
Conservation of momentum
Quark
38. With spherical mirrors - the radius of the sphere of which the mirror is a part.
Radius of curvature
Pulley
Beta particle
Centripetal force
39. A scale for measuring temperature - defined such that water freezes at 0ºC and boils at 100ºC. 0ºC = 273 K.
Celsius
Direction
Center of mass
Angular velocity
40. Two quantities are directly proportional if an increase in one results in a proportional increase in the other - and a decrease in one results in a proportional decrease in the other. In a formula defining a certain quantity - those quantities to whi
Celsius
Angle of incidence
Directly proportional
Constructive interference
41. 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.
Activity
Conservation of Angular Momentum
Convex mirror
Angular position
42. 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.
Tail
Concave lens
Potential energy
Radioactive decay
43. 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.
Pascals
Dispersion
Rigid body
Melting point
44. A push or a pull that causes an object to accelerate.
Inversely proportional
Newton
Force
Faraday's Law
45. The force that causes simple harmonic motion. The restoring force is always directed toward an object's equilibrium position.
Refraction
Restoring force
Optics
Internal energy
46. The series of standing waves supported by a string with both ends tied down. The first member of the series - called the fundamental - has two nodes at the ends and one anti-node in the middle. The higher harmonics are generated by placing an integra
Refraction
Cycle
Harmonic series
Inclined plane
47. 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.
Alpha decay
Quark
Orbit
Third Law of Thermodynamics
48. 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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49. In the Bohr model of the atom - the state in which an electron has the least energy and orbits closest to the nucleus.
Melting point
Tip
Ground state
Electromagnetic spectrum
50. The property by which a changing current in one coil of wire induces an emf in another.
Dispersion
Decibel
Absolute zero
Mutual Induction