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How can we make sounds.pptx

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How can we make sounds? 14 February 2018 Key words: Vibrations, ear drum, vacuum How can we make sounds? 14 February 2018 Key words: Vibrations, ear drum, vacuum Starter: Have a white board ready to guess the sound…

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The big picture: “How are sounds made? ” Learning outcomes üTo identify how sounds The big picture: “How are sounds made? ” Learning outcomes üTo identify how sounds can be made üTo explain how sounds can be changed. üTo analyse how sounds reach our ears.

Sound investigation Around the room there are different everyday objects to make a sound Sound investigation Around the room there are different everyday objects to make a sound with. ALL: Find out how the sound is made. Most: Find out how the sound can be made louder/ quieter. Some: Find out how the sound can be made higher/ lower pitched. Fill in your table as you go. LO: To identify how sounds can be made To explain how sounds can be changed.

Name of experiment The Ruler The Rubber Band Paper clips Tin foil The shaker Name of experiment The Ruler The Rubber Band Paper clips Tin foil The shaker The cardboard tub How can you make the sound? What can you see? What is producing the sound? How can the sound be made louder or softer? Challenge: How can the sound be made higher or lower pitched?

The guitar string makes the air particles Vibrate and move towards the ear. The guitar string makes the air particles Vibrate and move towards the ear.

Air particles bump into air particles inside the ear and these particles vibrate. Air particles bump into air particles inside the ear and these particles vibrate.

The vibrating air makes the ear drum vibrate and we hear the sound. The vibrating air makes the ear drum vibrate and we hear the sound.

Fill in the gaps task Fill in the gaps on how sound travels to Fill in the gaps task Fill in the gaps on how sound travels to our ears. Extra challenge: Why can the sound of this alarm clock not be heard by the end of the video? Answer in your books. http: //www. youtube. com/watch? v=ce 7 AMJdq 0 Gw Word bank bones brain ear drum vibrating electrical air particles wave sound ears

Fill in the gaps task Any sound is caused by something _____. The vibrating Fill in the gaps task Any sound is caused by something _____. The vibrating object causes the _________ next to it to vibrate; those air particles then cause the particles next to them to vibrate. In this way, a disturbance of the air moves out from the source of the ______. Sound travels through the air as a sound _____ , and may eventually reach the _____ of a listener. When we hear a sound, air vibrates against the ____ causing it to vibrate also. The vibrations are passed on by 3 small _____ to the cochlea. Here in the cochlea, the vibrations are changed into _____ messages. These messages travel along a nerve to the _____. Word bank bones brain ear drum vibrating electrical air particles wave sound ears

Self-assessment Any sound is caused by something vibrating. The vibrating object causes the air Self-assessment Any sound is caused by something vibrating. The vibrating object causes the air particles next to it to vibrate; those air particles then cause the particles next to them to vibrate. In this way, a disturbance of the air moves out from the source of the sound. Sound travels through the air as a sound wave, and may eventually reach the ear of a listener. When we hear a sound, air vibrates against the ear drum causing it to vibrate also. The vibrations are passed on by 3 small bones to the cochlea. Here in the cochlea, the vibrations are changed into electrical messages. These messages travel along a nerve to the brain. Word bank bones brain ear drum vibrating electrical air particles wave sound ears

1 thing I need to find out about 2 new things I have learnt 1 thing I need to find out about 2 new things I have learnt today 3 things I already knew but now understand better Set your self a short term goal to try and find out about your one thing you need to find out after this lesson.