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