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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 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
Tangent
Boyle's Law
Nuclear fission
Inversely proportional
2. The amount of heat needed to raise the temperature of one gram of water by one degree Celsius. 1 cal = 4.19 J.
De Broglie wavelength
Gold foil experiment
Atomic number
Calorie
3. Waves produced by a source that is moving with respect to the observer will seem to have a higher frequency and smaller wavelength if the motion is towards the observer - and a lower frequency and longer wavelength if the motion is away from the obse
Gamma ray
Focal point
Inclined plane
Doppler shift
4. Objects that experience oscillatory or simple harmonic motion when distorted. Their motion is described by Hooke's Law.
Spring
Direction
Index of refraction
First Law of Thermodynamics
5. The spectrum containing all the different kinds of electromagnetic waves - ranging in wavelength and frequency.
Mass
Momentum
Electromagnetic spectrum
Reflected ray
6. 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
Frictional force
Pressure
Tension force
Pascals
7. 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.
Directly proportional
Orbit
Unit vector
Cosine
8. For a gas held at constant pressure - temperature and volume are directly proportional.
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9. A form of radioactive decay where a heavy element emits an alpha particle and some energy - thus transforming into a lighter - more stable - element.
Work-energy theorem
Meson
Weightlessness
Alpha decay
10. The tendency of an object to remain at a constant velocity - or its resistance to being accelerated. Newton's First Law is alternatively called the Law of Inertia because it describes this tendency.
Third Law of Thermodynamics
Inertia
Concave lens
Sublimation
11. Occurs when every point in the rigid body moves in a circular path around a line called the axis of rotation.
Rotational motion
Weight
Temperature
Specific heat
12. 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.
Faraday's Law
Angular velocity
Direction
Basis vector
13. The amount of heat necessary for a material undergoing sublimation to make a phase change from gas to solid or solid to gas - without a change in temperature.
Superposition
Latent heat of sublimation
Electromagnetic wave
Total internal reflection
14. The lowest theoretical temperature a material can have - where the molecules that make up the material have no kinetic energy. Absolute zero is reached at 0 K or -273º C.
Absolute zero
Center of mass
Maxima
Normal
15. A unit for measuring angles; also called a "rad." 2p rad = 360º.
Constant of proportionality
Radian
Equilibrium position
Tangent
16. A collision in which the colliding particles stick together.
Photoelectric effect
Completely inelastic collision
Bohr atomic model
Momentum
17. Energy associated with the state of motion. The translational kinetic energy of an object is given by the equation .
Kinetic energy
Magnetic flux
Tangent
Equilibrium
18. 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.
Kinetic friction
Moment of inertia
Rigid body
Concave mirror
19. 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.
Radioactivity
Real image
Trough
Tangent
20. A coefficient that tells how much the volume of a solid will change when it is heated or cooled.
Coefficient of volume expansion
Free
Specific heat
Electromagnetic wave
21. A transverse traveling wave created by the oscillations of an electric field and a magnetic field. Electromagnetic waves travel at the speed of light - m/s. Examples include microwaves - X rays - and visible light.
Cross product
Electromagnetic wave
Michelson-Morley experiment
Hypotenuse
22. The unit of magnetic flux - equal to one T · m2.
Refraction
Pitch
Boyle's Law
Weber
23. 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.
Neutrino
Beta particle
Electronvolt
Concave lens
24. Heat transfer by molecular collisions.
Gravitational Potential Energy
Half
Longitudinal waves
Conduction
25. 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.
Lenz's Law
Convection
Vector
Rutherford nuclear model
26. 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.
Magnification
Distance
Focal point
Mole
27. The reaction force of the ground - a table - etc. - when an object is placed upon it. The normal force is a direct consequence of Newton's Third Law: when an object is placed on the ground - the ground pushes back with the same force that it is pushe
Compression
Hooke's Law
Tension force
Normal force
28. The current induced in a circuit by a change in magnetic flux.
Induced current
Virtual image
Absolute zero
Normal force
29. In the graphical representation of vectors - the tip of the arrow is the pointy end.
Entropy
Tip
Orbit
Uncertainty principle
30. Life- The amount of time it takes for one-half of a radioactive sample to decay.
Angular period
Half
Hertz (Hz)
Gold foil experiment
31. Another word for the frequency of a sound wave.
Right-hand rule
Completely inelastic collision
Pitch
Gamma ray
32. An experiment in 1879 that showed that the speed of light is constant to all observers. Einstein used the results of this experiment as support for his theory of special relativity.
Maxima
Michelson-Morley experiment
Induced current
Acceleration
33. Two quantities are inversely proportional if an increase in one results in a proportional decrease in the other - and a decrease in one results in a proportional increase in the other. In a formula defining a certain quantity - those quantities to wh
Basis vector
Angular acceleration
Inversely proportional
Centripetal acceleration
34. The path of each planet around the sun is an ellipse with the sun at one focus.
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35. 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.
Universal gas constant
Work function
Kepler's Second Law
Heat
36. A process that aligns a wave of light to oscillate in one dimension rather than two.
Tip
Antinode
Force
Polarization
37. 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.
Principal axis
Rotational motion
Activity
Center of mass
38. A logorithmic unit for measuring the volume of sound - which is the square of the amplitude of sound waves.
Refracted ray
Alpha particle
Tail
Decibel
39. An equation - PV = nRT - that relates the pressure - volume - temperature - and quantity of an ideal gas. An ideal gas is one that obeys the approximations laid out in the kinetic theory of gases.
Refracted ray
Minima
Ideal gas law
Atom
40. A pulley is a simple machine that consists of a rope that slides around a disk or block.
Sound
Beta decay
Snell's Law
Pulley
41. 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
Instantaneous velocity
Speed
Refraction
42. 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.
Frequency
Axis of rotation
Restoring force
Significant digits
43. The force that binds protons and neutrons together in the atomic nucleus.
Entropy
Induced current
Strong nuclear force
Minima
44. Heat transfer via electromagnetic waves.
Kepler's Third Law
Superposition
Harmonic series
Radiation
45. 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.
Boiling point
Radioactive decay
Rigid body
Coefficient of kinetic friction
46. 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.
Longitudinal waves
Force
Beta decay
Unit vector
47. 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.
Dynamics
Mechanical energy
Coefficient of static friction
Decay constant
48. In an interference or diffraction pattern - the places where there is the most light.
Maxima
Weight
Uniform circular motion
Pulley
49. The ray of light that is refracted through a surface into a different medium.
Impulse
Refracted ray
Frictional force
Angle of reflection
50. 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
Longitudinal waves
Mole
Center of mass
Sound