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75 Cards in this Set
- Front
- Back
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What color is NOT a color of the visible spectrum? |
Magenta |
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What is a series of organized sound waves with specific pitches that have been deliberately arranged? |
Music |
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The multiplication of force by a machine under ideal conditions is the ____. |
IMA |
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A change in sound frequency caused by an object's motion is the ____ effect. |
Doppler |
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A measure of how well a machine converts input work into output work is the machine's ____. |
Efficiency |
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A lens that is curved outward, causing light rays to converge and objects to appear magnified, is a ____ lens. |
Convex |
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What is the rate of doing work? |
Power |
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When two notes interfere in a disagreeable way, the result is ____. |
Dissonance |
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What is a violent compression pulse caused by an object moving faster than the speed of sound? |
Shock wave |
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What is sound heard distinctly after being reflected from an object? |
Echo |
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A beam of light containing waves that all vibrate in the same direction is ____. |
Polarized |
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Who demonstrated that light consists of electromagnetic waves? |
James Clerk Maxwell |
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What is the average speed of a person who walks 28 km in 7.0 hr? |
4.0 km/ hr |
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A vector showing the combined effect of two or more vectors is a ____. |
Resultant |
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What is the process by which colors are produced by interference of reflected light, often seen in soap bubbles and thin films? |
Iridescence |
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What is the vector representing the change in an object's position? |
Displacement |
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The technique of transmitting light through narrow glass cables ,such as for communications, is ____. |
Fiber optics |
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What unit is used to measure sound intensity in a way that reflects how our ears perceive sound? |
Decibel |
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What is the SI unit of force? |
Newton |
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The subtractive primary colors of pigment are ____. |
Cyan, magenta, and yellow |
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The angle of incidence equals the angle of reflection |
Law of reflection |
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For every action there is an equal and opposite reaction |
Third law of motion |
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When the overall external force acting on a system is zero, the momentum of the whole system remains constant |
Law of conservation of momentum |
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Any two objects attract each other with a force that depends on their masses and the distance between them |
Law of universal gravitation |
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Force is directly proportional to mass and acceleration |
Second law of motion |
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The velocity of an object does not change unless the object is acted upon by an external force |
First law of motion |
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What device uses reflected electromagnetic waves to measure the distance and direction of faraway objects? |
Radar |
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Name the scientist who predicted stimulated emission and formulated the theory of relativity. |
Albert Einstein |
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On what does the energy of a photon depend? |
frequency |
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What behavior of light causes the scintillation of stars? |
Refraction |
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What property of an object equals the product of the object's mass and velocity? |
Momentum |
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What term refers to any change in speed, direction, or both? |
Acceleration |
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What simple device uses defraction to produce a better spectrum than a prism can produce? |
Diffraction grating |
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What is the three-dimensional image produced by laser light? |
Hologram |
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A lever that has the input force between the fulcrum and output force is a class ____ lever. |
3 |
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Sound waves are a type of ____ wave. |
Longitudinal |
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What effect is NOT predicted by the special theory of relativity? |
Volume expansion |
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Light that consist of only one frequency is ____. |
Monochromatic |
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The frequency relationships between the fundamental and overtones are described by the ____ series. |
Harmonic |
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What type of friction keeps a stationary object from moving? |
Static |
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What is NOT a property of laser light? |
Polarized |
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What is a "center-seeking" force that causes an object to travel in a curved path rather than in a straight line? |
Centripetal force |
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A physical quantity that has both magnitude and direction in a ____ quantity. |
Vector |
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How much work is done in lifting a 60. N box 2.9 m? |
120 J |
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What is the spread out part of a longitudinal wave? |
Rarefaction pulse |
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Sound with frequency above the range of human hearing is _____ sound. |
Ultrasonic |
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The process that occurs when an excited atom is struck by one photon and emits two photons is ____. |
Stimulated emission |
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Find the speed of a wave that has a wavelength of 1.5 m and a frequency of 4.0 Hz. |
6.0 m/s |
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What is the maximum distance that particles are displaced by a wave? |
Amplitude |
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What is the mutual reinforcement or cancellation that occurs when two or more waves meet |
Interference |
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And what phenomenon does light not electrons lose from the atoms of certain metals? |
Photoelectric effect |
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Which group of instruments includes the clarinet? |
Woodwinds |
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The type of ultra violet radiation that causes suntans and sunburns is ____. |
UVB |
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What type of machine is a combination of fixed and movable pulleys? |
Block and tackle |
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The illusion of water covering a hot highway in the distance is an example of a ____ |
Mirage |
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The idea that gravity is an effect of the geometry of space is part of the ____ theory of relativity. |
General |
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The fastest possible speed in the universe is the speed of ____ in a vacuum. |
Light |
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A visible spectrum in the sky produced by falling raindrops is a ____, |
Rainbow |
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Light consist of electromagnetic waves traveling as tiny bundles or packets of energy called ____. |
Photons |
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The change in a wave's direction when passing from one medium to another is ____. |
Refraction |
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The effect of frequency on the way our ears perceives sound is ____. |
Pitch |
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The theory stating that light has characteristics of both particles and waves is the _____ theory of light. |
Quantum |
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Low-frequency waves widely used for communication |
Radio waves |
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High-frequency electromagnetic waves used in medicine, dentistry, and airport security to "see" inside solid objects |
X-rays |
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The most powerful and penetrating form of electromagnetic radiation |
Gamma rays |
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Electromagnetic waves sometimes referred to as "heat rays" |
Infrared waves |
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A combination of all the colors of light mixture together is perceived as ____. |
White |
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The branches of physics developed since 1900 are called ____ physics. |
Modern |
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Constructive interference of light in slit diffraction produces a light fringe called a ____ |
Antinode |
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An arrangement of all forms of electromagnetic radiation in order of frequency and wavelength is the ____. |
Electromagnetic spectrum |
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The resistance arising to an object's motion through a fluid or across a surface is ____. |
Friction |
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The theory based on the ideas that all motion is relative to some reference point and that the speed of light is constant in relation to any observer in the ____ theory of relativity. |
Special |
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The strength of a soundwave is its ____. |
Intensity |
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The spreading out of a wave after it passes through a narrow opening is ____. |
Diffraction |
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The speed of light is constant in a ____. |
Vacuum |
