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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. An image created by a mirror or lens in such a way that light does actually come from where the image appears to be. If you place a screen in front of a real image - the image will be projected onto the screen.
Real image
Radiation
Compression
Photon
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 .
Angle of refraction
Normal
Dot product
Kinetic energy
3. The number of cycles executed by a system in one second. Frequency is the inverse of period - f = 1/T. Frequency is measured in hertz - Hz.
Electromagnetic wave
Frequency
Planck's constant
Doppler shift
4. The state of a nonrotating object upon whom the net torque acting is zero.
Orbit
Free
Frequency
Equilibrium
5. A positively charged particle that - along with the neutron - occupies the nucleus of the atom.
Calorie
Dispersion
Proton
Vector
6. A vector of magnitude 1 along one of the coordinate axes. Generally - we take the basis vectors to be and - the vectors of length 1 along the x- and y-axes - respectively.
Directly proportional
Basis vector
Acceleration
Beats
7. The two shorter sides of a right triangle that meet at the right angle.
Legs
Total internal reflection
Nuclear fusion
Spring
8. 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
Rigid body
Scalar
Wave speed
9. 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
Pitch
Collision
Dot product
Energy
10. With spherical mirrors - the center of the sphere of which the mirror is a part. All of the normals pass through it.
Faraday's Law
Universal gas constant
Center of curvature
Moment of inertia
11. 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
Tangent
Traveling waves
Neutron
Harmonic series
12. A means of defining the direction of the cross product vector. To define the direction of the vector - position your right hand so that your fingers point in the direction of A - and then curl them around so that they point in the direction of B. Th
Boiling point
Pascals
Right-hand rule
Radian
13. 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.
Spectroscope
Pendulum
Heat
Nucleus
14. The energy of a particle rotating around an axis.
Scalar
Gold foil experiment
Energy
Rotational kinetic energy
15. 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
Bohr atomic model
Direction
Ground state
16. 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.
Hertz (Hz)
Destructive interference
Spring
Vector
17. 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.
Maxima
Law of reflection
Compression
Instantaneous velocity
18. 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.
Axis of rotation
Michelson-Morley experiment
Pendulum
Zeroth Law of Thermodynamics
19. A constant - J · s - which is useful in quantum physics. A second constant associated with Planck's constant is .
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20. The temperature at which a material will change phase from liquid to gas or gas to liquid.
Pendulum
Alpha decay
Boiling point
Angular velocity
21. Energy cannot be made or destroyed; energy can only be changed from one place to another or from one form to another.
Magnetic flux
Component
Law of conservation of energy
Joule
22. 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.
Momentum
Entropy
Focal point
Planck's constant
23. For two given media - the smallest angle of incidence at which total internal reflection occurs.
Critical angle
Spectroscope
Collision
Third Law of Thermodynamics
24. Heat transfer via the mass movement of molecules.
Universal gas constant
Mass
Latent heat of transformation
Convection
25. 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
Ground state
Magnetic flux
Basis vector
26. The acceleration of a body experiencing uniform circular motion. This acceleration is always directed toward the center of the circle.
Magnification
Electronvolt
Margin of error
Centripetal acceleration
27. A machine that operates by taking heat from a hot place - doing some work with that heat - and then exhausting the rest of the heat into a cool place. The internal combustion engine of a car is an example of a heat engine.
Angular momentum
Loudness
Real image
Heat engine
28. The amount of heat of a material required to raise the temperature of either one kilogram or one gram of that material by one degree Celsius. Different units may be used depending on whether specific heat is measured in s of grams or kilograms - and
Reflection
Diffraction grating
Magnetic flux
Specific heat
29. The effect of force on rotational motion.
Torque
Angular acceleration
Hertz (Hz)
Simple harmonic oscillator
30. When two waves of slightly different frequencies interfere with one another - they produce a "beating" interference pattern that alternates between constructive (in-phase) and destructive (out-of-phase). In the case of sound waves - this sort of inte
Decibel
Beats
Work function
Inversely proportional
31. The force that causes simple harmonic motion. The restoring force is always directed toward an object's equilibrium position.
Frequency
Thermal energy
Restoring force
Latent heat of fusion
32. 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.
Gravitational constant
Decibel
Work-energy theorem
Isolated system
33. 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.
Index of refraction
Internal energy
Alpha decay
Latent heat of fusion
34. A measure of the average kinetic energy of the molecules in a system. Temperature is related to heat by the specific heat of a given substance.
Gamma decay
Beta decay
Angular acceleration
Temperature
35. 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.
Frequency
Longitudinal waves
Legs
Concave lens
36. 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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37. The time - T - required for a rigid body to complete one revolution.
Kinematic equations
Kinetic theory of gases
Beats
Angular period
38. The points on a standing wave where total destructive interference causes the medium to remain fixed at its equilibrium position.
Restoring force
Potential energy
Node
Frequency
39. The disorder of a system.
Entropy
Third Law of Thermodynamics
Threshold frequency
Inelastic collision
40. Objects that experience oscillatory or simple harmonic motion when distorted. Their motion is described by Hooke's Law.
Spring
Real image
Medium
Latent heat of sublimation
41. 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.
Nuclear fusion
Restoring force
Hertz (Hz)
Focal length
42. If a line is drawn from the sun to the planet - then the area swept out by this line in a given time interval is constant.
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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. Body diagram- Illustrates the forces acting on an object - drawn as vectors originating from the center of the object.
Free
Loudness
Critical angle
Magnetic flux
45. The points of maximum negative displacement along a wave. They are the opposite of wave crests.
Electronvolt
Chain reaction
Trough
Conservation of momentum
46. When a light ray strikes a surface - the angle of incidence is the angle between the incident ray and the normal.
Equilibrium
Coefficient of linear expansion
Angle of incidence
Convex lens
47. A wave on a string that is tied to a pole at one end will reflect back toward its source - producing a wave that is the mirror-image of the original and which travels in the opposite direction.
Angle of incidence
Reflect
Margin of error
Proton
48. A law - || = - which states that the induced emf is the change in magnetic flux in a certain time.
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49. Energy associated with the state of motion. The translational kinetic energy of an object is given by the equation .
Kinetic theory of gases
Spring constant
Weak nuclear force
Kinetic energy
50. The process by which a solid turns directly into gas - because it cannot exist as a liquid at a certain pressure.
Sublimation
Pendulum
Latent heat of sublimation
Decibel