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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. The center of a mirror or lens.
Vertex
Work
Destructive interference
Cycle
2. Occurs when every point in the rigid body moves in a circular path around a line called the axis of rotation.
Charles's Law
Phase
Elastic collision
Rotational motion
3. The angle between a refracted ray and the line normal to the surface.
Magnetic flux
Kepler's Third Law
Angle of refraction
Focal length
4. If the net torque acting on a rigid body is zero - then the angular momentum of the body is constant or conserved.
Kepler's Second Law
Cycle
Center of mass
Conservation of Angular Momentum
5. The energy stored in a thermodynamic system.
Beats
Internal energy
Static friction
Wave
6. The mass difference between a nucleus and the sum of the masses of the constituent protons and neutrons.
Rotational kinetic energy
Dynamics
Mass defect
Inelastic collision
7. In radioactive substances - the number of nuclei that decay per second. Activity - A - will be larger in large samples of radioactive material - since there will be more nuclei.
Activity
Kinetic friction
Celsius
Pascals
8. The five equations used to solve problems in kinematics in one dimension with uniform acceleration.
Kinematic equations
Basis vector
Calorie
Photon
9. 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
Wavelength
Conservation of Angular Momentum
Moment of inertia
Newton's Third Law
10. The building blocks of all matter - atoms are made up of a nucleus consisting of protons and neutrons - and a number of electrons that orbit the nucleus. An electrically neutral atom has as many protons as it has electrons.
Atom
Atomic number
Gravitational Potential Energy
Pressure
11. A device that breaks incoming light down into spectral rays - so that one can see the exact wavelength constituents of the light.
Spectroscope
Force
Efficiency
Scalar
12. The property by which a changing current in one coil of wire induces an emf in another.
Mutual Induction
Velocity
Convection
Destructive interference
13. When a solid - liquid - or gas changes into another phase of matter.
Proton
Equilibrium
Phase change
Critical angle
14. 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.
Direction
Center of mass
Coefficient of static friction
Angular period
15. Energy cannot be made or destroyed; energy can only be changed from one place to another or from one form to another.
Newton's Third Law
Oscillation
Law of conservation of energy
Radioactive decay
16. An almost massless particle of neutral charge that is released along with a beta particle in beta decay.
Neutrino
Deposition
Crest
Work-energy theorem
17. In oscillation - a cycle occurs when an object undergoing oscillatory motion completes a "round-trip." For instance - a pendulum bob released at angle has completed one cycle when it swings to and then back to again. In period motion - a cycle is the
Rigid body
Electromagnetic spectrum
Electron
Cycle
18. The unit for measuring pressure. One Pascal is equal to one Newton per meter squared - 1 Pa = 1 N/m2.
Refracted ray
Ground state
Pascals
Chain reaction
19. A scale for measuring temperature - defined such that 0K is the lowest theoretical temperature a material can have. 273K = 0ºC.
Spring
Kelvin
Wave speed
Heat
20. 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.
Bohr atomic model
Sound
Neutron number
Nuclear fusion
21. An object cannot be cooled to absolute zero.
Third Law of Thermodynamics
Coherent light
First Law of Thermodynamics
Universal gas constant
22. 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.
Refracted ray
Refraction
Electronvolt
Cosine
23. 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
Uniform circular motion
Cycle
Transformer
Motional emf
24. Another word for the frequency of a sound wave.
Absolute zero
Pitch
Meson
Uncertainty principle
25. A constant in the numerator of a formula.
Entropy
Constructive interference
System
Constant of proportionality
26. An image created by a mirror or lens in such a way that light does not actually come from where the image appears to be.
Right-hand rule
Virtual image
Gamma ray
Chain reaction
27. 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.
Orbit
Atomic number
Convection
Radius of curvature
28. 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
Diffraction
Harmonic series
Impulse
Rotational kinetic energy
29. Represented by R = 8.31 J/mol · K - the universal gas constant fits into the ideal gas law so as to relate temperature to the average kinetic energy of gas molecules.
Amplitude
Hypotenuse
Basis vector
Universal gas constant
30. 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.
Power
Law of reflection
Concave mirror
Sine
31. The amount heat necessary to cause a substance to undergo a phase transition.
Coefficient of static friction
Latent heat of transformation
Dot product
Inertia
32. A transfer of thermal energy. We don't speak about systems "having" heat - but about their "transferring" heat - much in the way that dynamical systems don't "have" work - but rather "do" work.
Faraday's Law
Heat
Node
Ideal gas law
33. A neutrally charged particle that - along with protons - constitutes the nucleus of an atom.
Convex lens
Fundamental
Neutron
Meson
34. The spectrum containing all the different kinds of electromagnetic waves - ranging in wavelength and frequency.
Acceleration
Electromagnetic spectrum
Weak nuclear force
Constructive interference
35. A device that converts mechanical energy to electrical energy by rotating a coil in a magnetic field; sometimes called a "dynamo."
Coefficient of linear expansion
Activity
Amplitude
Electric generator
36. The speed at which a wave crest or trough propagates. Note that this is not the speed at which the actual medium (like the stretched string or the air particles) moves.
Inelastic collision
Legs
Wave speed
Boyle's Law
37. The points of maximum negative displacement along a wave. They are the opposite of wave crests.
Trough
Joule
Gamma decay
Mass defect
38. F = ma. The net force - F - acting on an object causes the object to accelerate - a. The magnitude of the acceleration is directly proportional to the net force on the object and inversely proportional to the mass - m - of the object.
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39. 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.
Photoelectric effect
Unit vector
Momentum
Law of reflection
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.
Alpha decay
Beta particle
Energy
Momentum
41. For a gas held at a constant temperature - pressure and volume are inversely proportional.
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42. 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.
Mass number
Isotope
Transformer
Weak nuclear force
43. 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
Spectroscope
Trough
Free
44. Waves carried by variations in air pressure. The speed of sound waves in air at room temperature and pressure is roughly 343 m/s.
Weight
Frictional force
Sound
Constant of proportionality
45. A nuclear reaction in which a high-energy neutron bombards a heavy - unstable atomic nucleus - causing it to split into two smaller nuclei - and releasing some neutrons and a vast amount of energy at the same time
Sublimation
Nuclear fission
Inclined plane
Tip
46. The ratio of the size of the image produced by a mirror or lens to the size of the original object. This number is negative if the image is upside-down.
Zeroth Law of Thermodynamics
Alpha decay
Momentum
Magnification
47. For a heat engine - the ratio of work done by the engine to heat intake. Efficiency is never 100%.
Efficiency
Threshold frequency
Lenz's Law
Pulley
48. 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.
Weightlessness
Angular period
Period
Pulley
49. 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
Chain reaction
Phase change
Traveling waves
50. 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.
Photoelectron
Alpha particle
Cycle
First Law of Thermodynamics