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50 Cards in this Set
- Front
- Back
The lowest frequency in a sound |
fundamental frequency |
|
The higher frequencies in a sound |
harmonics |
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Sounds that have a frequency lower than 20 hertz |
infrasound |
|
Sounds that have a frequency higher than 20,000 hertz |
ultrasound |
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The unit of sound frequency |
hertz |
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The unit of sound intensity |
decibel |
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how high or low a sound seems |
pitch |
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The pitch of a sound depends on _____ |
frequency |
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The loudness of a sound depends on _____ |
amplitude |
|
loudness of a sound |
intensity |
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the source of all sound |
vibration |
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sound cannot travel through ____ |
space |
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what type of material does sound travel the fastest? |
solids |
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sound travels ___________ in warm air than in cold air |
faster |
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sound is a ________ wave |
longitudinal |
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light is a(n) _________ wave |
electromagnetic |
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what are the 6 kinds of electromagnetic waves (in order from low energy to high energy)? |
radio, infrared, visible light, ultraviolet, x-rays, gamma rays |
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what is the speed of light in meters/second? |
300,000,000 |
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The bending of light caused by a change in the speed of light |
refraction |
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which color of light is refracted the least |
red |
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if light enters a more dense medium, it will refract ________ the normal |
towards |
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light that vibrates in a single plane |
polarized light |
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what are the primary colors of light? |
red, blue, green |
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what are the primary pigments? |
yellow, cyan, magenta |
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type of lens that is thicker in the middle and thin at the edges |
convex lens |
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type of lens that is thinner in the middle than at the edges |
concave lens |
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type of image that cannot be projected onto a screen |
virtual |
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type of image that can be projected onto a screen |
real |
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type of reflection from a rough surface where reflected rays are scattered in many directions |
diffuse reflection |
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type of reflection from a smooth surface where reflected rays are parallel to one another |
regular reflection |
|
a particle of light |
photon |
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type of electromagnetic wave that has the longest wavelength |
radio waves |
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what happens to light when it passes through a prism |
it produces a rainbow |
|
|
polarized light |
|
|
regular reflection |
|
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concave lens |
|
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regular light |
|
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diffuse reflection |
|
|
convex lens |
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what are the names of the 3 tiny bones in the ear? |
hammer, anvil, stirrup |
|
what is the outer part of the ear that we see called? |
pinna |
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what is the membrane in the ear that vibrates when sound waves hit it |
eardrum |
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what do we called the snail-shaped structure in the ear that contains a fluid |
cochlea |
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what is the opening in the eye called? |
pupil |
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the back of the eyeball |
retina |
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nerve that connects the eye to the brain |
optic nerve |
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nerve that connects the ear to the brain |
auditory nerve |
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transparent coating on the outside of the eye that protects it |
cornea |
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colored part of the eye that surrounds the pupil |
iris |
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oval-shaped structure inside the eye that focuses light |
lens |