Sound waves 6.1LB

A guitar is a musical instrument

with strings.

Which one of these is needed to make

a sound from the guitar?

• The guitar is made from wood.

• The guitar strings vibrates

• There is air inside the guitar.

• There are metal parts on the guitar.

Zara is playing the guitar by plucking a string.

Which statement describes a way that Zara can make the sound louder?

• Pluck the string with more force.

• Pluck the string with less force.

• Make the string tighter.

• Make the string looser.

Some flying insects make a buzzing sound.

Describe what causes this sound.

Sound travels through air as a sound…………………

• current

• wind

• wave

• stream

Sofia is watching television.

The sound from the television is travelling across

the room, as shown in the diagram.

Which of these arrows shows how the particles in

air vibrate?

• 
• 
• 
• 

Thunder can make objects inside a room vibrate.

Explain what causes the objects to vibrate.

A fly is walking up a glass window. The fly’s feet make vibrations.

Explain why people cannot hear the sound of the fly walking

Which of these can sound travel through?

Select all the correct answers. Write the letters.

• Solid

• Liquid

• Gas

• Vaccum

The Moon has no atmosphere. People who went to the Moon wore

suits that contained air.

The people who went to the Moon worked close together.

They did work such as hammering and digging. Explain why the people doing this work could not hear it happening.

Science fiction films are made in studios on Earth.

These films often show explosions in space.

There is usually a loud bang when the explosion happens.

Explain whether you would really hear an explosion in space.