Term
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Definition
-SI Unit of Frequency -One vibration per second |
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Term
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Definition
| -formed by overlapping of two or more waves that arrive in region at same time |
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Term
| What kind of wave is sound? |
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Definition
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Term
| What causes the change in observed frequency ((The Doppler Effect))? |
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Definition
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Term
| What is the source of all wave motion? |
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Definition
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Term
| Do solids, liquids, or gases transmit sounds the best? |
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Definition
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Term
| Speed of sound depends on ________ |
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Definition
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Term
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Definition
| -frequency of a forced vibration on an object matches objects natural frequency |
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Term
| Can sound waves interfere with each other to the extent no sound results? |
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Definition
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Term
| Amount of light transmitted when two Polaroid filters are held with thier axes at right angles to each other? |
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Definition
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Term
| Shiny surfaces of metals most have to do with _______? |
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Definition
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Term
| Is glass transparent to either infared or ultavoilet light? |
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Definition
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Term
| Electromagnetic waves are______ |
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Definition
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Term
| Source of electromagnetic waves is_______ |
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Definition
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Term
| Complementary colors______ |
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Definition
| produce white light when added |
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Term
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Definition
| Lower frequncies of light are scatteres least by nitrigen and oxygen, leaving red orange and yellow sunlight. |
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Term
| Color of dots on TV screen______ |
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Definition
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Term
| Determines color of opaque objects________ |
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Definition
| whatever light is transmitted |
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Term
| What determines the color of objects we see? |
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Definition
| whatever light is absorbed, transmitted, reflected |
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Term
| Hear noises over long distance away over water at night_______ |
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Definition
| refraction of sound in air |
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Term
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Definition
changing speed in light waves
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Term
| What happens in a curved optical fiber? |
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Definition
| its internally reflected in straight line paths |
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Term
| Light travels fastest in________ |
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Definition
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Term
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Definition
| the angle of incidence = the angle of reflection |
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Term
| Type of lens is a magnifying glass? |
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Definition
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Term
| Fish out of waters goggles should be filled with_____ |
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Definition
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Term
| 4 characteristics of converging lens: |
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Definition
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Term
| speed of light in glass compared to water |
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Definition
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Term
| ray diagrams are used for_______ |
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Definition
| figuring out where image is located |
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Term
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Definition
a material that is a poor conducter of heat and delays the transfer of heat -poor conducter of electricity |
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Term
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Definition
| material that can be made to behave as a conductor or an insulator of electricity |
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Term
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Definition
| fundamental electrical property to which the mutual attraction or repulsions between elctrons and protons are attributed to. |
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Term
| Define Conservation of Charge. |
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Definition
| net electric charge is neither created or destroyed but transferable |
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Term
| When charge cloud passes overhead the ground______ |
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Definition
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Term
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Definition
| electric potential diffrence accross which one coloumb of charge gains or loses one joule of energy. |
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Term
| How many volts will charge a balloon after you rub it on your head? |
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Definition
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Term
| What is the feild strength inside negatively charged metal hollow spere? |
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Definition
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Term
| What does a VAn Der Graff generator do? |
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Definition
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Term
| What happens when two negative charges are held close together and then released? |
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Definition
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Term
| What type of current is in a battery? |
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Definition
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Term
| Where do the electrons that make the shock in the body of shocked woman come from? |
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Definition
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Term
| two things to make flow of charge |
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Definition
-the voltage provided by the voltge source -the resistance |
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Term
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Definition
| a flow of one coloumb of charge per second |
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Term
| Why can a bird perch harmlessly on bare high voltage wire? |
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Definition
| all parts of there body is the same potential as the wire |
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Term
| What is source of all magnetism? |
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Definition
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Term
| what is the motion of all electrons in magnets? |
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Definition
| move around nucleus and spin on axis |
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Term
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Definition
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Term
| What happens if you put a small compass in a mgnetic feild? |
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Definition
| makes parallel lines to magnetic feild lines |
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Term
| If you break a bar magnet in half, what will happen to each half? |
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Definition
| each will become a bar magnet with 2 poles |
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Term
| Two light bulbs are in a series, how much current flows through them? |
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Definition
| the same amount through both |
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Term
| What happens when one bulb burns out on a parallel unit? |
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Definition
| the flow will not be interrupted |
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Term
| What is required to form an electric current? |
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Definition
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Term
| Campare resistors ina series to the same two resitors connected in a parallel. |
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Definition
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Term
| Describe elctron flow in alternating current: |
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Definition
| constanly changing direction |
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