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September 29, 2016. Warm Up: Imagine a student was absent yesterday and you had to fill them in on today’s lesson. Write them a note describing how our vision works, and how our brain works to create a perception from this sensation . Or
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September 29, 2016 Warm Up: Imagine a student was absent yesterday and you had to fill them in on today’s lesson. Write them a note describing how our vision works, and how our brain works to create a perception from this sensation. Or Try to compose a tweet (yes, must only be 140 characters; use abbreviations!) summarizing how our brain tries to create a perception from the visual sensation.
HOW DO WE HEAR? Sound waves enter the ear… Amplified by an oval-shaped membrane called the ______________ Eardrum Ear Drum
HOW DO WE HEAR? Sound then vibrates along 3 bones: 1) ___________ 2) ___________ 3) ___________ Hammer Anvil Stirrup
THEN… Sound then passes along receptor cells in tiny hair-like structures known as __________ Cilia
HOW WE HEAR…IN PICTURES! Ear Ear Drum Sound Wave Hammer, Anvil, & Stirrup Cilia
Decibels Our hearing is measured in ____________ • 30 dB a whisper • 60 dB normal conversation • 70 dB rush-hour traffic • 85 dB RISK LEVEL - (Prolonged exposure louder than this will result in hearing loss) • 90 dB subway train; lawn mower • 100 dB power saw; drill • 115 dB loud rock concert • 140 dB jet engine • 170 dB shotgun blast
3 Aspects of Hearing Loudness 1) ______________: The intensity of a pressure wave (decibels) 2) PITCH: The frequency of a pressure wave 3) ______________: Helps differentiate between the same note played on different instruments Timbre
TIME FOR… BATTLE OF THE SENSES!!!
September 30, 2016 • Warm Up: • Cell phones and hearing loss article and questions Agenda: Warm Up Finish hearing BOTS Taste! - quick notes - video clips - BOTS! If time remains, continue on text hunt and vocab
THE TONGUE The tongue has tiny bumps covering its surface known as __________ Papillae contain hundreds of receptor cells known as _____________ Papillae Taste buds
DID YOU KNOW? Some people have EXTRA taste buds, which make them more sensitive to tastes SUPERTASTERS!
4 Tastes of the Tongue Saltiness 1) _____________: Necessary for survival 2) _____________ 3) _____________:Identifies rancid/poisonous food 4) _____________:Identifies healthy foods, rich in calories Sourness Bitterness Sweetness
TIME FOR… BATTLE OF THE SENSES!!!