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| list the regions of the electromagnetic spectrum from the shortest wavelengths to the longest wavelengths |
gamma rays
x-rays
ultraviolet
visible light
infrared
microwaves
T.V, F.M
Radio Waves |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| state one piece of evidence supporting the particle model of light |
light can knock electrons off metals and travel through a vacuum |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| state one piece of evidence supporting the wave model of light |
light experiences reflection, refraction, diffraction, interference |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| when an object is leaving, what happens to the frequency, wavelength, speed, and pitch? |
increases: wavelength
decreases: frequency, pitch
same: speed |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| when an object is approaching, what happens to the frequency, wavelength, speed, and pitch? |
increases: frequency, pitch
decreases: wavelength
same: speed |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| why do objects have color? |
because they reflect certain wavelengths of light |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| why is light sometimes black? |
because there is an absence of color |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| why is light sometimes white? |
because all colors are combined together |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| curved mirrors distort images because... |
the angles at which light is reflected are not all the same |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| flat mirrors form... |
virtual images |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| what is the Law of Reflection? |
the angle of incidence equals the angle of reflection |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| smooth surfaces reflect rays in ______ direction |
the same |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| rough surfaces reflect rays in _______ directions |
all |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| rainbows are caused by... |
disperion and internal reflection as water droplets in the air cause light to bend at different angle |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| in a spectrum, violet light is bent more than red because violet light... |
traves slower than red light |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| a _____ seperates white light into seperate colors (dispersion) |
prism |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| ______ can magnify images, creating virtual images of different size |
lenses |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| _____ makes objects appear in different positions |
refraction |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| light is bent when it passes through different mediums because... |
the speed is different through different mediums |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| when the wavelength is 5.89x10^-7 and the speed is 1.94x10^8 m/s, what is the frequency? |
3.3x10^14 Hz |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| when the frequency is 2.5x10^4 Hz, and the speed is 331 m/s, what is the wavelength? |
0.01 m |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| a wave crest passes you 5 times every 15 seconds. what is the frequency? period? |
frequency: 1/3 m/s
period: 3 seconds |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| pules down a stretch of rope: 2 pulses per second. The distance between pulses is 5 meters. What is the speed? |
10 m/s |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| a man is standing on the shore. every 5 seconds a wave comes. what is the period? |
5 seconds |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| the amount of light illuminating a surface |
intensity |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| brightness depends on... |
intensity and distance |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| energy is proportional to... |
frequency |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| resonance is heard when the body of an instrument vibrates... |
at the same frequency as the strings |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| sound is produced by... |
standing waves |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| pitch is determined by... |
frequency
a. rapid vibrations = high frequency = high pitch |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| intensity is proportional to... |
amplitude |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| loudness is determined by... |
intensity |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| what transwers sound waves faster out of solid, liquid, and gas? |
solids and liquids |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| the speed of sound depends on... |
how often molecules of the medium collide and transmit energy.
a. more collisions = faster speed |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| waves are defined as transfers of... |
energy |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| the frequency of a sound wave determines... |
pitch |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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| sound waves are __________ waves |
longitudinal |
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chunsah Fri, 28 Mar 2008 02:34:53 GMT |
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