Term
| a common source of wave motion is a... |
|
Definition
|
|
Term
| in a longitudinal wave the compression and rare fractions travel in... |
|
Definition
|
|
Term
| the vibrating of a transverse wave move in a direction... |
|
Definition
| at right angles to the direction of wave travel |
|
|
Term
| wave interferrence occurs for.. |
|
Definition
|
|
Term
| the doppler effect is characteristic of... |
|
Definition
|
|
Term
| a dopple effect occurs when a source of sound moves... |
|
Definition
| either towards you or away from you. |
|
|
Term
| for light, a red shift indicates that the light source is moving... |
|
Definition
|
|
Term
| the amplitude of a particular wave is 1 meter. the top to bottom distance of the disturbance is... |
|
Definition
|
|
Term
| if you double the frequency of a vibrating object, its period... |
|
Definition
|
|
Term
|
Definition
|
|
Term
| sound waves cannot travel in... |
|
Definition
|
|
Term
| which force binds atoms together to form molecules? |
|
Definition
|
|
Term
| in an electrically neutral atom the number of protons in the nucleus is equal to the number of... |
|
Definition
| electrons that surround the nucleus. |
|
|
Term
| a positive ion has more... |
|
Definition
|
|
Term
| to say that electrical force between charged is strongest when the charges are.... |
|
Definition
|
|
Term
| the electrical force between charges depends only on the charge's... |
|
Definition
| magnitude and sepearation distance |
|
|
Term
| superconductors are noted for their... |
|
Definition
| absence of electrical resistance |
|
|
Term
| two protons attract each other gravitationally and repel each other electrically. by far the greater force is... |
|
Definition
| the electrical repulsion. |
|
|
Term
| electrical potential, measure in volts, is the ration of electric energy to amount of electric.... |
|
Definition
|
|
Term
| a difference between electric forces and gravitational forces is that gravitational forces are not affected by... |
|
Definition
|
|
Term
| charge carries in a metal are electrons rather than protons because electrons are.... |
|
Definition
|
|
Term
| you can touch a 100,000 volt van de graaff generator wiht little harm because alothough the voltage is high, the relavtively small amount of charge means there is a relatively small amount of... |
|
Definition
|
|
Term
| a proton and an electron are places in an electric field, which undergoes the greater acceleration? |
|
Definition
|
|
Term
| electrons are made to flow in a wire when there is... |
|
Definition
| a potential difference across its ends |
|
|
Term
| an ampere is a unit of electrical.. |
|
Definition
|
|
Term
|
Definition
| charge flows in a closed circuit. |
|
|
Term
| electrons move in an electrical circuit... |
|
Definition
| by interacting with an established electric field. |
|
|
Term
| heat a copper wire and its electrical resistance... |
|
Definition
|
|
Term
| a wire carrying a current is normally charged... |
|
Definition
|
|
Term
| in an ac circuit, the electric field.... |
|
Definition
| changes magnitude and direction with time. |
|
|
Term
| the primary source of electrons is an ordinary electrical circuit is... |
|
Definition
| the electrical circuit itself. |
|
|
Term
| alternating current is normally produced by a... |
|
Definition
|
|
Term
| when two lamps are connected in parallel to a battery, the electrical resistance that the battery senses is... |
|
Definition
| less than the resistance of either lamp. |
|
|
Term
| when two lamps are connected is series to a battery, the electrical resistance that the battery sense is... |
|
Definition
| more than the resistance of either lamp. |
|
|
Term
| a circuit breaker often serves the same purpose as a... |
|
Definition
|
|
Term
| the source of all magnetism is... |
|
Definition
|
|
Term
| moving electric charges will interact wih... |
|
Definition
| an electric field or a magnetic field. |
|
|
Term
| if a steady magnetic field exerts a force on a moving charge, that force is directed.... |
|
Definition
| at right angles to the direction of the motion. |
|
|
Term
| an iron rod becomes magnetic when.... |
|
Definition
| the net spins of its electrons are in the same direction |
|
|
Term
| like kinds of magnetic poles repel while unlike kinds of magentic poles.. |
|
Definition
|
|
Term
| several paper clips dangle from the north pole of the magnet. the induced pole in the bottom of the lower most paper clip is a.... |
|
Definition
|
|
Term
| an iron nail is more strongly attracted to the.. |
|
Definition
| north or south pole-- no difference |
|
|
Term
| magnetism is due to the motion of electrons as they... |
|
Definition
| choices A and B are both.. |
|
|
Term
| magnetic domains normally occur in.... |
|
Definition
|
|
Term
| magnetic field lines about a current carrying wire.... |
|
Definition
| circle the wire in closed loops |
|
|
Term
| the force on an electron moving in a magnetic field will be the largest when its direction is... |
|
Definition
| perpendicular to the magnetic field direction |
|
|
Term
| magnet A has twice the magnetic field strength of Magnet B and at a certain distance pulls on magnet B with a force of 100 N. the amount of force that magnet A exerts on magnet B is.... |
|
Definition
|
|
Term
| compared to the huge force that attracts on iron tack to a storng magnet, the force that the tack exerts on the magnet is... |
|
Definition
|
|
Term
| an electron is shot through a spot somewhere between the ends of a horseshoe magnet. the electron... |
|
Definition
|
|
Term
| outside a magnet, magnetic field lines are conventionally drawn from.... |
|
Definition
|
|
Term
| which force field can accelerate an electron, but never change its speed? |
|
Definition
|
|
Term
| which force field can increase a moving electron's speed? |
|
Definition
|
|
Term
| when there is a change in the magnetic field in a closed loop of wire.... |
|
Definition
|
|
Term
| when a bar magnet is thrust into a coil of copper wire, the coil tends to.... |
|
Definition
| repel the magnet as it enters. |
|
|
Term
| voltage can be induced in a wire by... |
|
Definition
| choices A and B and C are all correct. |
|
|
Term
| the magnetic field strength inside a current carrying coil will be greater if the coil encloses a.... |
|
Definition
|
|
Term
| if a magnet is pushed into a coil, voltage is induced across the coil. if the same magnet is pushed into a coil with twice the number of loops... |
|
Definition
| twice as much voltage is induced |
|
|
Term
| a device that transforms electrical energy to machanical energy is a.... |
|
Definition
|
|
Term
| a transformer actually transforms.... |
|
Definition
|
|
Term
| transformers use ac so there will be the required.... |
|
Definition
| change in magnetic field for operation. |
|
|
Term
| the output power of an ideal transformer is.... |
|
Definition
| equal to the input power. |
|
|
Term
| disconnect a small voltage battery form a coil of many loops of wire and a large voltage is produced by.... |
|
Definition
| the sudden collapse in the magnetic field. |
|
|
Term
| rapid change of a magnetic field induces.... |
|
Definition
|
|
Term
| a step-up transformer increase.... |
|
Definition
|
|
Term
| a certain transformer doubles input voltage. if the primary coil has 10 A of current, then the current in the secondary coil is... |
|
Definition
|
|
Term
| most of the waves in the electromagnetic spectrum are... |
|
Definition
|
|
Term
| compared to radio waves, the velocity of visible light waves in a vacuum is.... |
|
Definition
|
|
Term
| if an electric charge is shaken up and down... |
|
Definition
| a magnetic field is created. |
|
|
Term
| which of the following is fundamentally different from the others? |
|
Definition
|
|
Term
| compared to its average speed in air, the average speed of a beam of light in glass is.... |
|
Definition
|
|
Term
| materials generally become warmer when light is... |
|
Definition
|
|
Term
|
Definition
|
|
Term
| a lunar eclipse occurs when... |
|
Definition
| moon passes into the earth's shadow. |
|
|
Term
| electromagnetic waves consist of.... |
|
Definition
| oscilicating electric and magnetic fields. |
|
|
Term
| the source of all electromagnetic wave is.... |
|
Definition
| accelerating electric changes. |
|
|
Term
| the sensation of color is seen when light falls on the eye's.... |
|
Definition
|
|
Term
| in the periphery of our vision, we are... |
|
Definition
| sensitive to movement, but cannot see color. |
|
|
Term
| which of the following cannot travel in a vacuum? |
|
Definition
|
|
Term
| color depends on what characteristic of light? |
|
Definition
|
|
Term
| the color of an opaque object is the same as the light that is.... |
|
Definition
|
|
Term
| what color light is transmitted by a piece of blue glass? |
|
Definition
|
|
Term
| the brightest color emitted by the sun is... |
|
Definition
|
|
Term
| which will warm up quicker in sunlight? |
|
Definition
|
|
Term
| the sky is blue because air molecules in the sky act as tiny.... |
|
Definition
| resonators which scatter blue light. |
|
|
Term
| a whitish sky is evidence that the atmosphere contains... |
|
Definition
| a mixture of particle sizes. |
|
|
Term
| a variety of sunset colors is evidence for a variety of.... |
|
Definition
|
|
Term
| the greenish blue of water is evidence for the... |
|
Definition
|
|
Term
| a blue object will appear black when illuminated with... |
|
Definition
|
|
Term
| if sunlight were green instead of white, the most comfortable color to wear on a hot day would be... |
|
Definition
|
|
Term
| light id emitted when.... |
|
Definition
| electron clouds of atoms are forced into oscillation |
|
|
Term
| light will almost always travel from one place to another along a path of least... |
|
Definition
|
|
Term
| when light reflects form a surface, there is a change inits.... |
|
Definition
|
|
Term
| ninety five percent of light inident on a mirror is refelcted. how much light is reflected when three of these mirrors are arrange so light reflects from one after the other? |
|
Definition
|
|
Term
| a mirage is a result of atmospheric.... |
|
Definition
|
|
Term
| refraction results form difference in light's... |
|
Definition
|
|
Term
| light refracts when traveling form air into glass because light... |
|
Definition
| travels slower in glass than in air. |
|
|
Term
| the average speed of light is greatest in... |
|
Definition
|
|
Term
| the type of lens that spreads parallel light is a.... |
|
Definition
|
|
Term
| a burning glass used to concentrate sunlight in a tiny spot is a... |
|
Definition
|
|
Term
| the image of the "infinitely-far-away" sun produced by converging lens appears... |
|
Definition
|
|
Term
| chromatic aberration is a consequence of different colors in a lens having different... |
|
Definition
|
|
Term
| different colors of light travel at differnt speeds in a transparent medium. in a vacuum, different colors of light travel at... |
|
Definition
|
|
Term
| if you wish to spear a fish with a regular spear, you should compensate for refraction between the air and water and throw your spear.... |
|
Definition
|
|
Term
| consider plane waves incident upon a barrier with a small opening. after passing through the opening, the waves... |
|
Definition
|
|
Term
| diffraction is more pronounced through relatively... |
|
Definition
|
|
Term
| to perceive greater detail a dolphin emits sounds of.. |
|
Definition
|
|
Term
| diffraction is a result of.... |
|
Definition
|
|
Term
| the highest frequency light of those below is.... |
|
Definition
|
|
Term
| the energy of a photon is related to... |
|
Definition
|
|
Term
| an atom that absorbs a photon of a certain energy can then emit..... |
|
Definition
| only a photon of the same or lower energy. |
|
|
Term
| light is emitted when an electron... |
|
Definition
| makes a transition to a lower energy level. |
|
|
Term
| to say that energy levels in an atom are discrete is to say the energy levels are well defined and.... |
|
Definition
| separate form one another |
|
|
Term
| some doubt pane airplane windows darken when the inner pane is rotated. the panes are... |
|
Definition
|
|
Term
| polarization is a property of.... |
|
Definition
|
|
Term
| interference is a property of.... |
|
Definition
|
|
Term
| which color of light carries the most energy per photon? |
|
Definition
|
|
Term
| the variety of colors seen in a burning log comes from the variety of... |
|
Definition
| electron transitions in various atoms |
|
|
Term
| the greater proportion of energy immediately converted to heat rather than light occurs in... |
|
Definition
|
|
Term
| discrete spectral lines occur when excitation takes place in a.... |
|
Definition
|
|
Term
| the dark lines in the sun's spectrum represent light that is.... |
|
Definition
| absorbed by the sun's atmosphere |
|
|
Term
| astronomers can tell whether a star is approaching or receding from earth by.... |
|
Definition
|
|
Term
| atoms can be excited by.... |
|
Definition
|
|
Term
| compared to the energy put into a laser, the energy of the laser beam is.... |
|
Definition
|
|
Term
|
Definition
|
|
Term
| a certain object emits infrared waves. if it were to emit light waves instead, its temperature would have to be... |
|
Definition
|
|
Term
| the absorption of an infrared photon that excited an atom to emit a green photon.... |
|
Definition
| violates the law of energy conservation |
|
|
Term
| the doppler effect from the back and forth motion of atoms in a glowing discharge tube tends to make the spectral lines slightly |
|
Definition
|
|
Term
| the photoelectric effect, the brighter the illuminating light on a photosensitive surface, the greater the... |
|
Definition
| number of ejected electrons |
|
|
Term
| in the photoelectric effect, the greater the frequency of the illuminating light, the greater the.... |
|
Definition
| maximum velocity of ejected electrons. |
|
|
Term
| the photoelectric effect best demonstrates the... |
|
Definition
| particle nature of light. |
|
|
Term
| light behaves primarily as a particle when it... |
|
Definition
|
|
Term
| in the double-slit experiment with electrons, the electrons arrive at the screen in a... |
|
Definition
| particle-like way with a pattern that is wave like. |
|
|
Term
| the uncertainty principle applies not only to momentum and position, but also to energy and time. this statement is.... |
|
Definition
|
|
Term
| according to the uncertainty primciple, the more we know about a particle's momentum, the less we know about its..... |
|
Definition
|
|
Term
| in the relationship E=hf for a photon emitted from an atom, the symbol E is used to represent the energy... |
|
Definition
|
|
