What does it mean if something vibrates?

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?

A vibrating object can produce sound.

What happens when materials vibrate?

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 _________.

How does hitting a drum produce sound?

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 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?

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?

What is the definition of sound?