Sound

• Nask / Techniek
• Middelbare school
• vmbo b
• Leerjaar 2

Chapter: Sound

Stuff you need:

- Your phone

- Your calculator

Make sound

• Source of sound 
• Tunningfork
  

How can you hear sound?

• What is sound?
• How does sound get to my ear?
• My ear
  

What is another name for something that creates sound?

1. A heat source
2. A machine
3. A source of sound
4. A chair

What is sound?

1. The air in the sky
2. A vibration that travels throught he air
3. A string of a guitar
4. A drumset

Arthur talks to me in space, but I can't hear him. That is because there is no …. in space.

Speed of sound

Sound has a speed. Have you ever seen a thunderstruck?

sound can travel 343 meters in 1 second!!

Ayoub sees lightning! He sees the lightning but he hear the strike 5 seconds later. How far was the lightning strike? speed of sound was 343m/s

Now you see lightning. You count to 8 and hear the lightning strike. How far is the lightning strike?

1. 344 meter
2. 1737 meter
3. 3450 meter
4. 2744 meter

Music Instruments

• Who plays a instrument?
• Sound pitch
• How to tune a instrument ?

The tenser i tune my guitar strings, the ......  the pitch of the sound becomes.

Higher

lower

thinner

Make assignments.