"Changes of Sound" Sound PPT Courseware 4

Description

"Changes of Sound" Sound PPT Courseware 4

Study the relationship between the amplitude of the steel ruler and the volume

1. Gently turn the steel ruler and observe and describe the sound made by the steel ruler;

2. Push the steel ruler hard and observe and describe the sound it makes. Repeat 3 times and record in the record sheet.

I see

The intensity of sound is described by volume. Volume is a quantity that describes the amplitude of the vibration of an object. The unit is: decibel (dB). The greater the vibration amplitude, the stronger the sound; the smaller the vibration amplitude, the weaker the sound.

Observe and compare the changes in the sound pitch of four cups containing different amounts of water.

1. If these 4 cups are hit with the same force, predict the difference in the sounds they make?

2. Use the words high, high, low, and low to describe their changes.

3. Fill in the record form.

Why does a person's voice change when he has a cold?

The nasal cavity is a resonance system of the human body. Since the nasal cavity and sinuses are structurally a whole, the sinuses can be compared to the resonance box of a violin or huqin. Having a resonance box can make the sound pleasant and harmonious. On the contrary, if you have sinus diseases during a cold, your "resonance box" function will be lost, and the pleasant sound will change.

Why does the sound get louder and louder when I pour water into the thermos bottle?

When pouring water, the air column in the thermos bottle will vibrate. As the water level rises, the air column becomes shorter and shorter. The frequency of the air column vibration becomes larger and larger, and the pitch becomes higher and higher. Therefore, according to the pitch of the sound, You will know if the water is full.

Keywords: sound teaching courseware, sound change teaching courseware, fourth grade science PPT courseware download from the textbook edition, fourth grade science slide courseware download, sound PPT courseware download, sound change PPT courseware download, .PPT format;

For more information about the "Changes in Sounds" PPT courseware, please click on the "Changes in Sounds ppt" ppt tag.

"Changes of Sound" Sound PPT Download:

"Changes of Sound" Sound PPT Download Part One: Introduction of New Lessons Do students usually like to play with toys? Today we are also going to play with toys. We are not only competing to see who can play well, but also competing to see who has gained more knowledge while playing. Today the teacher...

"Changes of Sound" Sound PPT:

"Changes in Sound" Sound PPT Part 1: Observe and compare changes in sound intensity. Make part of a steel ruler or plastic ruler extend out of the table about 10 to 12cm. Use one hand to hold one end of the ruler, and the other hand to move the other end of the ruler. First gently move...

"Changes of Sound" Sound PPT Courseware 5:

"Changes in Sound" Sound PPT Courseware 5 Comparative Experiment 1: Observe and compare the changes in sound intensity Requirements: Take a steel ruler or part of a plastic ruler and extend it about 10-12 cm from the table. Press one end of the ruler with one hand and dial the other end of the ruler with the other hand. ..

File Info

Update Time: 2024-09-27

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

Preview