Investigate how vibrating material makes sound - 1st Grade Science
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What does it mean if something vibrates?
What does it mean if something vibrates?
Vibrating means small, quick back-and-forth movements. When you pluck a rubber band, it vibrates, when we talk our vocal cords vibrate, everything vibrates when it makes sounds.
Vibrating means small, quick back-and-forth movements. When you pluck a rubber band, it vibrates, when we talk our vocal cords vibrate, everything vibrates when it makes sounds.
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Pat's class is given an empty metal can with plastic wrap stretched across the top secured with a rubber band. His teacher sprinkles salt on the top of the plastic wrap. He is given a tuning fork and told to strike it on the desk and touch it to the side of the can. The rice starts to jump and he hears a sound. Why is this happening?
Pat's class is given an empty metal can with plastic wrap stretched across the top secured with a rubber band. His teacher sprinkles salt on the top of the plastic wrap. He is given a tuning fork and told to strike it on the desk and touch it to the side of the can. The rice starts to jump and he hears a sound. Why is this happening?
The salt moved because of the vibrations of the tuning fork. When struck on the desk it begins vibrating which makes a quiet sound. When the tuning fork is placed against the can it gets louder because the can is also vibrating. This causes the rice to start "jumping" because it is also vibrating. Pat will hear the tuning fork, metal can, and the sound of the rice hitting the plastic wrap because of the vibrations.
The salt moved because of the vibrations of the tuning fork. When struck on the desk it begins vibrating which makes a quiet sound. When the tuning fork is placed against the can it gets louder because the can is also vibrating. This causes the rice to start "jumping" because it is also vibrating. Pat will hear the tuning fork, metal can, and the sound of the rice hitting the plastic wrap because of the vibrations.
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A vibrating object can produce sound.
A vibrating object can produce sound.
This is a true statement. Vibrating materials do create sounds. If you think if the strings of a guitar, when strummed the strings vibrate and create the sounds. Sound comes from vibrations.
This is a true statement. Vibrating materials do create sounds. If you think if the strings of a guitar, when strummed the strings vibrate and create the sounds. Sound comes from vibrations.
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What happens when materials vibrate?
What happens when materials vibrate?
When a material vibrates sound waves are produced and travel through the air. Without vibrations, there would be no sound.
When a material vibrates sound waves are produced and travel through the air. Without vibrations, there would be no sound.
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Ms. Dube's class is experimenting with science today. At the Tuning Fork Station, students hit the tuning forks on the side of a cup. The vibration causes _________.
Ms. Dube's class is experimenting with science today. At the Tuning Fork Station, students hit the tuning forks on the side of a cup. The vibration causes _________.
The vibration of the tuning fork causes sounds to be heard. When an object or material vibrates it creates sound waves. Those waves travel through the air and our ears receive and process the noises.
The vibration of the tuning fork causes sounds to be heard. When an object or material vibrates it creates sound waves. Those waves travel through the air and our ears receive and process the noises.
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How does hitting a drum produce sound?
How does hitting a drum produce sound?
A drum produces sound when it is struck with a hand or object because the skin or outer covering vibrates. The air vibrates and sound waves move through the air producing the banging noises we hear with drums.
A drum produces sound when it is struck with a hand or object because the skin or outer covering vibrates. The air vibrates and sound waves move through the air producing the banging noises we hear with drums.
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Students place their hands on the front of their throat. The teacher asks them to hum softly and write down what they feel. The teacher asks them to hum louder and write down what they feel. The teacher asks them to be silent and write down what they feel.
Why was there no humming sound when there was no vibration?
Students place their hands on the front of their throat. The teacher asks them to hum softly and write down what they feel. The teacher asks them to hum louder and write down what they feel. The teacher asks them to be silent and write down what they feel.
Why was there no humming sound when there was no vibration?
When materials (including our vocal cords) vibrate, a sound is produced. When the students hum, there is a vibration; when there is no sound, there is no vibration. For sound waves to be produced, the material has to vibrate.
When materials (including our vocal cords) vibrate, a sound is produced. When the students hum, there is a vibration; when there is no sound, there is no vibration. For sound waves to be produced, the material has to vibrate.
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Students are told to make sounds in class. They stomp their feet, whistle, clap, and snap their fingers.
What do all these sounds have in common?
Students are told to make sounds in class. They stomp their feet, whistle, clap, and snap their fingers.
What do all these sounds have in common?
All of these sounds have movement in common. Something is moving before or during the sound so cause it to happen. Vibrations from clapping or whistling create the sound waves that carry the noise we hear to our ears.
All of these sounds have movement in common. Something is moving before or during the sound so cause it to happen. Vibrations from clapping or whistling create the sound waves that carry the noise we hear to our ears.
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Place a ruler on the edge of a desk, so that eight inches of it hangs over the side. Place one hand on the four inches that remain on the desk to hold the ruler securely. With your other hand, whack the end of the ruler that is hanging off of the desk. The ruler will vibrate up and down.
What will be produced because of the vibrations?
Place a ruler on the edge of a desk, so that eight inches of it hangs over the side. Place one hand on the four inches that remain on the desk to hold the ruler securely. With your other hand, whack the end of the ruler that is hanging off of the desk. The ruler will vibrate up and down.
What will be produced because of the vibrations?
Sounds will be produced because of the vibrations from the ruler. When the ruler is whacked and vibrates up and down, sound waves are created, and noise will be heard.
Sounds will be produced because of the vibrations from the ruler. When the ruler is whacked and vibrates up and down, sound waves are created, and noise will be heard.
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What is the definition of sound?
What is the definition of sound?
Sound is what you hear when vibrations create sound waves and they travel to your ear to be processed. When vibrations happen sound is created.
Sound is what you hear when vibrations create sound waves and they travel to your ear to be processed. When vibrations happen sound is created.
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