Waves and Sound SOL PS8.

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Presentation transcript:

Waves and Sound SOL PS8

Remember the topics we discussed about waves Remember the topics we discussed about waves. Can you describe the meaning of the following? 1. vibration 2. waves carry energy forward 3. energy 4. longitudinal waves 5. frequency

Today you will be learning more about waves and how they produce sound Today you will be learning more about waves and how they produce sound. After you watch the upcoming video, you will answer questions on a worksheet about things you learned about sound. SO PLEASE PAY ATTENTION!!

What causes all sounds? Vibrations

What are some things that might vibrate to make a sound? 1. rubber bands 2. guitar string 3. vocal cords 4. air

What determines if the sound is loud or soft? The amount of energy used to create the sound!! A greater force - a louder sound A small force – a softer sound

What does the term “frequency” mean? The number of times per second that something vibrates

Can we hear sounds of all different frequencies? No. Humans can not hear sounds below 20 Hz or above 20,000 Hz

Complete the short worksheet you are given as a quiz on this material Complete the short worksheet you are given as a quiz on this material ! Hand it in when you are finished.