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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. 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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2. 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
Law of reflection
Nuclear fission
Alpha decay
Speed
3. The property of a vector that distinguishes it from a scalar: while scalars have only a magnitude - vectors have both a magnitude and a direction. When graphing vectors in the xy-coordinate space - direction is usually given by the angle measured cou
Sine
Direction
Newton's Law of Universal Gravitation
Superposition
4. 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.
Hertz (Hz)
Momentum
Reflection
Centripetal acceleration
5. 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.
Concave lens
Focal point
Latent heat of fusion
Harmonic series
6. Light such that all of the associated waves have the same wavelength and are in phase.
Dot product
Displacement
Orbit
Coherent light
7. The principle stating that for any isolated system - linear momentum is constant with time.
Coefficient of volume expansion
Conservation of momentum
Atom
Electromagnetic spectrum
8. A unit of measurement for energy on atomic levels. 1 eV = J.
Electronvolt
Heat
Convex lens
Translational motion
9. The longest side of a right triangle - opposite to the right angle.
Kelvin
Hypotenuse
Atom
Amplitude
10. The center of a mirror or lens.
Vertex
Refracted ray
Vector
Diffraction
11. With spherical mirrors - the radius of the sphere of which the mirror is a part.
Power
Uncertainty principle
Transformer
Radius of curvature
12. The energy stored in a thermodynamic system.
Conduction
Diffraction grating
Potential energy
Internal energy
13. 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.
Atomic number
Speed
First Law of Thermodynamics
Cosine
14. 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.
Mutual Induction
Axis of rotation
Total internal reflection
Angular acceleration
15. 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
Basis vector
Hooke's Law
Isotope
16. The path of each planet around the sun is an ellipse with the sun at one focus.
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17. In an interference or diffraction pattern - the places where there is the least light.
Neutrino
Minima
Elastic collision
Lenz's Law
18. 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.
Moment of inertia
Restoring force
Normal force
Law of reflection
19. Heat transfer via the mass movement of molecules.
Convection
Pressure
Completely inelastic collision
Normal
20. 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.
Cosine
Gamma decay
Gravitational constant
Convex mirror
21. A coefficient that tells how much the volume of a solid will change when it is heated or cooled.
Kinematics
Absolute zero
Convex lens
Coefficient of volume expansion
22. A wavelength - given by = h/mv - which is associated with matter. Louis de Broglie proposed the idea that matter could be treated as waves in 1923 and applied this theory successfully to small particles like electrons.
Gravitational Potential Energy
De Broglie wavelength
Deposition
Torque
23. 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
Moment of inertia
Mass defect
Meson
Sine
24. A transfer of thermal energy from one system to another.
Beta decay
Heat transfer
Calorie
Convex mirror
25. Life- The amount of time it takes for one-half of a radioactive sample to decay.
Principal axis
Optics
Antinode
Half
26. 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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27. The square of the amplitude of a sound wave is called the sound's loudness - or volume.
Tail
Loudness
Heat transfer
Angular displacement
28. The effect of force on rotational motion.
Fundamental
Kelvin
Law of reflection
Torque
29. The line that every particle in the rotating rigid body circles about.
Translational motion
Axis of rotation
Inertia
Displacement
30. The building blocks of all matter - quarks are the constituent parts of protons - neutrons - and mesons.
Quark
Torque
Hypotenuse
Normal force
31. An object is called radioactive if it undergoes radioactive decay.
Latent heat of sublimation
Radioactivity
Reflect
Amplitude
32. 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.
Center of curvature
Coefficient of static friction
Motional emf
Nucleus
33. A small particle-like bundle of electromagnetic radiation.
Bohr atomic model
Photon
Threshold frequency
Reflection
34. Waves carried by variations in air pressure. The speed of sound waves in air at room temperature and pressure is roughly 343 m/s.
Sound
Activity
Inelastic collision
Impulse
35. The process by which a solid turns directly into gas - because it cannot exist as a liquid at a certain pressure.
Lenz's Law
Radiation
Translational kinetic energy
Sublimation
36. If the net torque acting on a rigid body is zero - then the angular momentum of the body is constant or conserved.
Photon
Activity
Destructive interference
Conservation of Angular Momentum
37. A device that converts mechanical energy to electrical energy by rotating a coil in a magnetic field; sometimes called a "dynamo."
Optics
Newton's First Law
Electric generator
Gamma ray
38. A pendulum consists of a bob connected to a rod or rope. At small angles - a pendulum's motion approximates simple harmonic motion as it swings back and forth without friction.
Pendulum
Transformer
Magnitude
Kelvin
39. 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
Free
Kinematics
Heat
40. 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.
Power
Equilibrium
Heat engine
Focal length
41. 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
Coefficient of static friction
Component
Wavelength
Free
42. When a light ray strikes a surface - the angle of incidence is the angle between the incident ray and the normal.
Angle of incidence
Work-energy theorem
Atomic number
Boiling point
43. A measure of force per unit area. Pressure is measured in N/m2 or Pa.
Pressure
Celsius
Cosine
Diffraction
44. A constant - - not to be confused with wavelength - that defines the speed at which a radioactive element undergoes decay. The greater is - the faster the element decays.
Virtual image
Decay constant
Electromagnetic wave
Specific heat
45. 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.
Angular period
Refracted ray
Boiling point
Significant digits
46. The ray of light that is reflected from a mirror or other reflecting surface.
Phase change
Restoring force
Angular velocity
Reflected ray
47. The unit for measuring pressure. One Pascal is equal to one Newton per meter squared - 1 Pa = 1 N/m2.
Frictional force
Focal length
Optics
Pascals
48. A vector quantity - L - that is the rotational analogue of linear momentum. For a single particle - the angular momentum is the cross product of the particle's displacement from the axis of rotation and the particle's linear momentum - . For a rigid
Speed
Mass
Destructive interference
Angular momentum
49. The movement of a rigid body's center of mass in space.
Crest
Translational motion
Concave lens
Heat
50. 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.
Cross product
Heat
Total internal reflection
Gravitational Potential Energy