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"How We Hear Sound" Sound PPT Download
Part 1: Importing new lessons
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?
PPT on how we hear sounds, part 2: new lesson learning
Activity 1 Explore the structure and function of the ear
Observe the ear structure diagram. Do you know our ears?
Discussion: What are the functions of each part of the ear? What role do they play in helping us hear sounds?
Think about it:
Provide each group with a picture or model of the "Structure of the Ear". As a group, discuss the main functions of the outer ear, middle ear and inner ear based on the picture or model of the "Structure of the Ear".
Activity 2 Functions of ear structures
The pinna of the outer ear transmits the collected sound to the tympanic membrane through the ear canal, causing the tympanic membrane to vibrate. This vibration signal is transmitted to the brain. Through brain processing, we can hear a variety of sounds.
1. The ear is divided into three parts ( ) ( ) ( ).
2. ( ) and ( ) are inside the head and we cannot see them.
3. The outer ear is composed of ( ) and ( ). The middle ear is composed of ( ) ( ) and so on.
( ) is an oval/translucent film. The inner ear is made up of ( ) etc. The cochlea is connected to ( ).
PPT on how we hear sound, part three: conclusion
What did you gain from today’s study? Group discussions and exchanges, representatives speaking.
The human ear is composed of the outer ear, the middle ear and the inner ear. The auricle of the outer ear transmits the collected sound to the tympanic membrane through the ear canal, causing the tympanic membrane to vibrate. This vibration signal is transmitted to the brain. Through processing by the brain, we Various sounds can be heard.
PPT on how we hear sounds, Part 4: Classroom exercises
1. The ear is divided into three parts ( ) ( ) ( ).
2. ( ) and ( ) are inside the head and we cannot see them.
3. The outer ear is composed of ( ) and ( ). The middle ear is composed of ( ) ( ) and so on. ( ) is an oval/translucent film. The inner ear is made up of ( ) etc. The cochlea is connected to ( ).
PPT on how we hear sounds, Part 5: Homework assignments
1. Find out: Which animals have very long auricles?
2. What is the function of the long auricles of animals?
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