Glass

The video tutorial explains how sound frequency is affected by the presence of water in a glass. It describes how an empty glass produces a lower frequency sound compared to a filled one. The tutorial further explores the mechanics of sound creation by detailing how rubbing a finger along the glass's rim causes vibrations, leading to sound production.

Why does a glass with water produce a lower frequency sound compared to an empty glass?

• Because the water increases the weight, slowing down the vibration.

• Because the water amplifies the sound.

• Because the water changes the color of the glass.

• Because the water makes the glass more transparent.

How does the presence of water in a glass affect its ability to be shaken?

• It allows the glass to be shaken faster.

• It prevents the glass from being shaken at all.

• It slows down the shaking speed.

• It makes the glass unbreakable.

What happens to the vibration of a glass when you rub your finger along its rim?

• The glass changes its shape.

• The glass becomes warmer.

• The glass stops vibrating completely.

• The glass vibrates due to the rapid stopping and starting of the finger.

What role does the finger play in making the glass vibrate?

• The finger changes the color of the glass.

• The finger heats up the glass.

• The finger's movement causes the glass to vibrate.

• The finger makes the glass heavier.

What is the result of the finger dragging across the top of the glass?

• The glass changes its color.

• The glass starts to shake.

• The glass becomes lighter.

• The glass becomes more transparent.