8.1 Sound

1. What do a guitar string, a ruler being flicked and a (music) triangle all have in common?

• They all jump
• They all vibrate to make a sound.
• They are all found in an orchestra
• They all sing
• Smithy is a world champion at triangle playing

2. How does sound travel from a loud speaker to a person listening on the other side of the room.

• The speaker vibrates which causes air particles to vibrate. These vibrations get passed on from particle to particle till they reach the ear.
• Sound particles are given out by the speaker, they travel through the air until they reach the ear.
• It just does. Sound magically appears in your head
• Psychic energy travels from the loud speaker to the ear through the particles in the air.

3. This picture shows a child's Xylophone toy. Which bar will make the highest pitched sound?

• The shortest bar
• The longest bar
• The one in the middle
• They all make the same pitched sound
• Bar bar black sheep

4. To make the sound louder they should:

• hit a longer bar
• hit a shorter bar
• hit it harder
• hit it more gently
• stick it up your nose

5. The following is a picture of how sound from a tuning fork can be seen as waves on an oscilloscope. What does the arrow ‘P’ represent?

• wavelength
• frequency
• amplitude
• pitch
• porpoise

6. What does the arrow ‘Q’ represent?

• wavelength
• frequency
• amplitude
• pitch
• quiditch

7. If a lower pitch tuning fork was used arrow P would

• Get longer
• Get shorter
• Stay the same
• Go spinny winny

8. If a lower pitch tuning fork was used arrow Q would

• Get longer
• Get shorter
• Stay the same
• Explode

9. If the tuning fork was struck more softly arrow P would

• Get longer
• Get shorter
• Stay the same
• Turn into a pumpkin

10. If the tuning fork was struck more softly arrow Q would

• Get longer
• Get shorter
• Stay the same
• Badger, badger, badger, badger......