Can you hear the sound of the piano? Cover your ears again. What can you find now?You know that sound makes air vibrate(震动), then it makes sound waves(声波). Before you can hear the sound, the sound waves must get to your ears.Our ears are made up of three parts. They are ...
Of course we hear sound(声音) with our ears.But do you know how we use our ears?Ask your friend clap(拍手) his hands.Cover(遮盖) your ears.Can you hear your friend clapping his hands?Put down your hands.Ask your friend to play the piano.Can you hear the sound of the piano?Cover...
It seems like no matter how far away from the ocean you are, you can still hold a seashell up to your ear and hear the roar of the waves rolling onto the shore. The best shells for producing this sound are the large, spiral conch shells. Some people have suggested that the sound you...
from Chapter 1 / Lesson 14 52K Explore the fascinating world of sound waves to discover what it is people really hear. Investigate how sound waves move through matter and how different vibration speeds create different sounds. Finally, learn why sound waves are important. Related...
In this simulation, you will be able to interact with elements and materials that allow you to build a scale model of the organ of hearing. In this way, you wil…
Of course we hear sounds with our ears! But Blnner ea:do you know how our ears work?Middle Ask your friend to clap()car his hands. Cover(遮盖) your ears. Can you hear your friend clapping hands? Ask your friend to play the piano. Can you hear the sound of the piano? Cover you...
2 The simplest way of listening to music is to listen for the sheer pleasure of the musical sound itself. That is the sensuous plane. It is the plane on which we hear music without thinking, without considering it in any way. One turns on the radio while doing something else and absent...
after class to make a determination of sound speed experiment, in order to improve the students' interest in learning, enhance students' perceptual knowledge. 5. How do we hear voices? Through the "when the speaker sound, soap film demonstration experiment will sound vibration", causes ...
Intensity of a sound is a measure of the power of its waves. Loudness refers to how strong a sound seems when we hear it. Noise is a sound that is unpleasant, annoying, and distracting. Pitch is the degree of highness or lowness of a sound as we hear it. ...
That's why someone's voice on a phone has a distinctive sound. Compare these two voices: Click here to hear a normal voice. Click here to hear the same voice on the telephone. You can prove that this sort of filtering actually happens by using the following sound files: 1,000-hertz ...