Download Hearing and Taste

HOW DO WE HEAR?
Sound waves enter the ear…
Amplified by an oval-shaped membrane
called the ______________
WHAT HAPPENS IF…
HOW DO WE HEAR?
Sound then vibrates along 3 bones:
1) ___________
2) ___________
3) ___________
THEN…
Sound then passes along receptor cells in tiny
hair-like structures known as __________
HOW WE HEAR…IN PICTURES!
HEARING & HEARING LOSS
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
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
TIME FOR…
THE TONGUE
The tongue has tiny bumps covering its
surface known as __________
Papillae contain hundreds of receptor
cells known as _____________
DID YOU KNOW?
Some people have EXTRA taste buds,
which make them more sensitive to tastes
4 Tastes of the Tongue
1) _____________: Necessary for survival
2) _____________
3) _____________: Identifies rancid/poisonous food
4) _____________: Identifies
healthy foods, rich in calories
TIME FOR…