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Science_Lab_Yellow / Lesson 2: What Can Sound Go Through?

What Can Sound Go Through
What will we be learning today?


  • In this lesson, we are going to learn all about what else can sound go through.


What Else Can Sound Go Through?


  • When you hear sounds, what is usually around you? Air! You can hear sounds in the air. When sound waves reach your ear, they make parts inside the ear vibrate. Since air is a mixture of gases, you may conclude that sound can travel through gases. It travels as sound waves.


Solids


  • Can sound also travel through solids and liquids? You can tell that sound travels through solids just by putting your ear onto a tabletop. If someone taps the table at the other end, you can hear the tapping louder than if you lift your head away from the table.


Liquids




  • If you do any underwater swimming, you probably can tell that you can hear sounds in water. You can hear someone calling you from above the surface. You can also hear sounds in the water around you.


  • Sound waves can travel through all forms of matter. In fact, sound waves depend on matter in order to travel away from the vibrating object that produces them. Without matter, sound waves could not travel. Can you hear sounds in a vacuum? No. A vacuum is a place where there is no matter.


  • Let's Review What We Learned Today!


    • Now complete your worksheet!