8th Grade
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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What is heat? | The energy produced by the movement of molecules
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What are three ways heat is transferred? | 1. conduction
2. convection
3. radiation
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Describe heat transfer through conduction. | the transfer of heat within a solid
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Describe heat transfer through convection. | the transfer of heat within a liquid of gas.
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Describe heat transfer through radiation. | Heat waves from the sun.
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How is heat measured? | By the tempurature
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What are the three scales for measuring tempurature? | 1. farenheit
2. celcius
3. kelvin
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What causes sound? | vibration
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What is the study of sound called? | Acoustics
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Sound Waves are dependant on.... | molecules
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What are the parts of a sound wave? | crest, trough, baseline, amplitude and wave length
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what is a crest? | the crest is how high up it goes
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What is the trough? | the trough is how low it goes
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what is Amplitude? | the difference between the baseline and the crest or trough
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what is the baseline | silence
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what is the wave length? | the length between the waves.
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We hear frequency as........ | pitch
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We hear amplitude as.......... | volume
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Frequency is measured in.... | Hertz
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A sensitive human ear can hear which frequencies? | highest- 20,000 Hertz
lowest- 20 Hertz
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volume is measured in..... | decibels
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what do we hear the crest and trough as? | volume
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what so we hear the wavelength as? | the note, frequency
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Light travels through _________ _ and ________ | a vacuum and molecules
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Most sources of light appear as... | white light
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visible light can be remembered as....v | ROY G. BIV
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Objects can _________, __________, or ___________ light | reflect, absorb, transm it
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Objects can get their color by | Reflecting light
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In what order does the electromagnetic spectrum go? | 1. radio waves
2. micro waves
3 infared
4. visible light
5. ultra violet
6. x-rays
7. Gama rays
8. Cosmic rays
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the clear, dome shaped tissue covering the front of the eye | Cornea
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a patch of dense hair located above the eye | eyebrow
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one of the many hairs on the edge of the eyelid | eyelash
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the flap of skin tat can cover and protect the eye | eyelid
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the colored part of the eye- controls the amout of light that enters the eye | iris
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a crystalline structure located behind the iris and focuses light on the retina | Lens
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the nerve that transmits electrical impulses from the retina to the brain | Optic Nerve
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the opening in the center of the iris, changes size | pupil
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sensory tissue that lines the back of the eye contains rods and cones that convert light rays into electrical impulses | Retina
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a thick liquid that fills the center of the eye | Vitreous
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anvil | Tiny bone that passes vibrations from the hammer to the stirrup
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cochlea | spiral shaped, filled with fluid. lined with cilia (tiny hairs)that move when vibrated
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eardrum | (also called the tympanic membran) a thin membrane that vibrates when sound waves reach it
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Eustachian tube | a tube that connects the middle ear to the back of the nose
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Hammer | also called malleus- a tiny bone that passed vibrations from the eardrum to the anvil
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Nerves | carry electro chemical signals from the inner ear (the cochlea) to the brain
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outer ear canal | the tube through which sound travels to the eardrum
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pinna | (auricle) the visible part of the outer ear.\
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Semicircular canals | the loops atached to the cochlea
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stirrup | (stapes) tiny u shaped bone- connected to cochlea, smallest bone in body
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outer ear | from pinna to eardrum
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middle ear | includes tiny bones
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inner ear | cochlea and auditory nerves
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sound steps | 1. pinna
2. outer ear canal
3. eardrum
4. Hammer
5. Anvil
6. Stirrup
7. semicircular canals
8. cochlea
9. nerves
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