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| When you throw a ball into the air its mechanical energy at any point is the ______ in its kinetic energy and gravitational potential energy |
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| As an object falls toward Earth, the gravitational potential energy of the object _______1 |
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| The total amount of energy in an isolated, closed system ________ |
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| A system that does not lose or gain mass is a _________ |
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| The ability of an object to produce a change in itself or its surroundings is _____ |
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| The total increase in the thermal energy of a system is the work done on it______ the heat addedd to it |
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| An increase in the average kinetic energy of particles means an ________ in temperature |
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| convection typically takes place in _______ |
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| fluids (gasses AND liquids) |
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| A thermometer is used to measure ______ |
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| the measure of hotness of an object is |
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| a heat engine continously converts |
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| Thermal energy to mechanical energy |
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| Energy that flows as a result of a difference in temperature is called |
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| Two objects are in thermal equilibrium if they |
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| Have the same thermal energy |
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| the SI unit of pressure is the |
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| According to pascal's principle a change on a confined fluid _____ |
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| is transmitted unchanged throughout the fluid |
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| the buyoant force exerted on an object immersed in a fluid is equal to the ________ |
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| weight of the displaced fluid |
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| According to Bernoulli's principle, as the velocity of a fluid increases, the __________ |
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| Pressure of the fluid decreases |
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| A crystal lattice is a characteristic of many_____ |
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| An object that is deformed by a force and returns to its original form when the force is removed is exhibiting the property of ______ |
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| The ______ is the state of matter in matter in which electrons have been torn away from the atoms |
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| the ____ forces within a liquid account for surface tension |
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| _____ transmits energy without transferring matter |
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| The time interval during which wave motion repeats is the ________ |
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| The number of vibrations per second is the _________ |
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| The speed of any mechanical wave depends on _______ |
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| The medium through which it travells |
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| when light from the air enters a body of water, in what form does some of the energy move back into the air |
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| this may be produced during destructive interference of waves |
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| The change in wave direction at the boundary of two different media is ______ |
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| The spreading of waves around the edge of a barrier is ______ |
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| Increasing the amplitude of a wave _____ the rate of energy |
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| Frequency is ______ related to period |
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| wavelength is measured in ______ |
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| the ____ is a line at a right angle to the barrier |
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| the outermost structure of the human ear that is used to collect sound waves is called the ______ |
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| Tonal quality or tone color is also called ______ |
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| For a __________ resonator a colum of length 1/2 will resonate with a tuning fork |
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| The frequency of a beat is the _____________ of the frequencies of the 2 waves that produce it |
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| absolute vaue of the difference |
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| A sound specctrum of an instrument is a graph of wave amplitude versus _____ |
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| The ear detects ____ vvarations as sound |
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| in a ___ pipe the reflected wave is inverted |
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| Sound level is measured in _____ |
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| Echoes demonstrate this behavior of sound waves |
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| Sound is an example of ______ wave |
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| The amplitude of sound as measured on a logarithmic scale is called ______ |
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| a detected apparent change in the pitch caused by the motion of a sound source or of an observer is called _____ |
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| The pitch of a sound depends most directly upon the sound's |
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| If two notes have a frequeny ratio of 1:2 the notes differ by an ______ |
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| the lowest frequency that will resonate in a pipe is the ______ |
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| A pleasent combination of pitches is called ______ |
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| An oscillation of wave amplitude caused by the sounding of two nearly identical frequencies is called a _____ |
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| electrical force is a vector quanity because it has magnitude and _____ |
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| An electrical field is equal to _______ |
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| As an elecctric field becomes stronge, the field lines should be drawn _____ |
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| As an electric field becomes stronger the field lines should be drawn _____ |
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| a good device to indicate electric field lines is a ________ |
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| with two _____ charges you must do work to pull one charge away from the other |
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| Robert Millikan determined the charge of a _______ to be 1.6 x 10^-19 C |
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| touching an object to the earth to elimate excess charge is _______ |
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| The charges on a hollow conductor are found on the _____ surface |
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| A ____ is made up of two conductors seperated by an insulator |
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| A charge pump created a flow of charged particles, or ________ |
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| A closed loop thruogh which charges can flow is an ____________ |
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| When a water wheel drives a generator the generator converts the ________energy of the water into electric energy |
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| The unit used to measure the rate of flow of electric current is an ________ |
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| the ______ of a conductor an be determined in potential difference and current are known |
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| a device that has constant resistance and appears to be independent of the _______ is said to obey Ohm's Law |
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| The current flowing in an electric circut can be increased by ______ |
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| Increasing voltage or decreasing resistance |
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| A device that can measure the amount of current in a circut is an ________ |
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| Electricity is carried long distance at high voltages because _____ |
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Definition
| this reduces current and less power is lost as thermal energy |
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| Utility companies measure energy used in _______ |
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| Albert Einstein described light as if it consisted of ______ |
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| Scanners, Cd players, digital cameras...ect |
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| A photocell is A device that converts light energy into ________ |
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| photoelectrons are electrons that have been liberated from a metal by ______ |
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| light shows properties of |
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| the amount of current flowing in photocells is porpotional to _____ |
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| Analog recording technology has limited fidelity because |
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Definition
| It cant capture the full range of sound |
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| the term Digital refers to _____ |
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| All optical discs _______ |
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| use laser beams to reproduce info |
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| a DvD can _____ than a Cd |
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| light modulation refers to the process of ______ |
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| Transmitting information in pulses of light |
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| infared light ____ the range of transmission |
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| ______ occurs when 2 waves occupy the same space at the same time |
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| thin film interference occcurs when light is reflected from _____ and ____ of the thin film surface |
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| Soap bubbles are an example of _____ |
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| quality camera lenses are coated with thin films to _____ the loss of light due to reflection |
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| ____ is a method of recording an interference pattern |
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| Waves transmit energy without transporting _____ |
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| nodes are ____ points in a medium |
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| after a waves passes through a medium the medium _____ |
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Definition
| returns to its previous condition |
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| structural colors are produced by _______ |
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| Iridescense refers to dependance of color on ________ |
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| photonic crystals are in nature....they are caused by _____ |
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| 3D perioic structure of the crystals |
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| Iridescence due to multilayer structure depends on the _____ and ____ of the layers |
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| a CD may be used to _____ light |
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| on a thin soap film it appears dark because ____ of the light is reflected |
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| the human eye can see _____ of the electromagnetic spectrum |
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