"How We Hear Sound" Sound PPT Courseware 2

Description

"How We Hear Sound" Sound PPT Courseware 2

1. The basic process of how the ear perceives sound

External sound → tympanic membrane vibration → amplification of the ossicles and other tissues (semicircular canals → vestibule → cochlea) → auditory nerve → brain nerve center

Types of non-congenital deafness include:

⑴Nerve damage; ⑵Conduction disorder.

During the Spring Festival, a grand fireworks display is held in Baietan. People gather on the shore to enjoy it. The sound of fireworks will cause an imbalance in the air pressure inside and outside the eardrum, causing the eardrum to rupture. What measures can be taken to reduce this pressure?

Beethoven was a great German musician. After he became deaf, what method did he use to "hear" his own playing on the piano and create music?

Do it:

① Tap the pen holder with your fingernail near your ear and listen for the sound;

②Plug your ears with your fingers and listen to the sound;

③ Please plug your ears with your fingers, put one end of the pen against your forehead, the bones of your back ears, and your teeth, and tap the penholder with your nails to see if you can hear the sound.

2. Bone sound transmission

Sound can also be transmitted to the auditory nerve through the skull, jaws, teeth, etc., causing hearing. This sound conduction method is called bone sound transmission.

3. Binaural Effect and Stereo Sound

Using the binaural effect, people can accurately determine the direction of sound.

Operation

There are many reasons that can cause hearing loss. What are some other causes in life? In response to these situations, how should we protect our hearing? Come up with your ideas and write a short essay.

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For more information about the PPT courseware "Sound How We Hear Sound", please click the Sound ppt How We Hear Sound ppt tag.

"How We Hear Sound" Sound PPT Download:

"How We Hear Sounds" Sound PPT Download Part 1: Introduction to the new lesson How do ears hear sounds? The vibration of the object produces sound, which is transmitted through the air to our ears in the form of waves. So how do the ears hear the sound?

"How We Hear Sounds" Sound PPT:

"How We Hear Sound" Sound PPT Part 1 Content: The Structure and Function of the Ear Observe the structural diagram of the ear. Think about what are the main functions of the outer ear, middle ear, and inner ear? Share your ideas within the group. Sound ear canal tympanic membrane auditory ossicles cochlea auditory nerve large...

"How We Hear Sound" Sound PPT Courseware 3:

"How We Hear Sounds" Sound PPT Courseware 3 (1) Structure of the ear External ear: auricle External auditory canal Middle ear: Tympanic membrane Auditory ossicles Inner ear: Semicircular canal Eustachian tube Auditory nerve Cochlea (2) The functions of each part of the auricle are ( ) function. The external auditory canal has ( )..

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Update Time: 2024-11-25

This template belongs to science courseware Fourth Grade Science Volume 1, Textbook Edition industry PPT template

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