Science Heat and Temperature. Sound.

Examples of wind instruments

• flute, harmonica, recorder

• guitar, violin, cello

• bongo, drum, xylophone

• flute, guitar, drum

Examples of string instruments.

• flute, harmonica, recorder

• guitar, violin, cello

• bongo, drum, xylophone

• flute, guitar, drum

Examples of percussion instruments.

• flute, harmonica, recorder

• guitar, violin, cello

• bongo, drum, xylophone

• flute, guitar, drum

We can not hear sound in place called vacuum because there is no ... for the sound to travel

• air

• conductor

• place

• pitch

The sound can ... in the string

Which one is FALSE

• sounds produced by vibration

• sound is measured in the unit of decibels

• pitch of sound is the high or low of sound

• sound travel fastest through gas, slowest through solid

• when sound is absorbed, the loudness of sound is reduced

Which one is FALSE

• sounds produced by vibration

• sound is measured in the unit of decibels

• pitch of sound is the high or low of sound

• volume of sound is the or low of sound

• when sound is absorbed, the loudness of sound is reduced

Which one is TRUE

• Foam and cushions can enhance the loudness of sound

• sound travels the fastest through gas

• sound travels the slowest through solid

• volume of sound is the or low of sound

• when sound is absorbed, the loudness of sound is reduced

Which one is TRUE

• Foam and cushions can enhance the loudness of sound

• sound travels the fastest through solid

• sound travels the slowest through solid

• volume of sound is the or low of sound

• when sound is absorbed, the loudness of sound is increase

How to make low pitch sound in recorder?

• Cover up all the holes

• Open up all the holes

• Cover only the small hole

• Open only the lower hole