8L Quick Quiz


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 8La

1       Sound is caused by:

A       waves.

B       vibrations.

C       heat.

D       air.

 

2       The sound of an aircraft taking off is very:

A       quiet.

B       high.

C       soft.

D       loud.

 

3       The sound of a referee’s whistle is:

A       soft.

B       high.

C       low.

D       quiet.

 

4       Sound travels in air because:

A       air particles stay still.

B       the wind blows it.

C       particles pass on vibrations.

D       electricity sends it through the air.

 

8Lb

1       The pitch of a sound is:

A       how high or low it sounds.

B       how loud or quiet it it.

C       how much energy it carries.

D       how long the sound lasts.

 

2       Frequency:

A       is the height of the waves.

B       is the number of waves per second.

C       is measured in metres.

D       affects how loud a sound is.

 

3       A loud sound is produced by waves with:

A       a high pitch.

B       a high frequency.

C       a large amplitude.

D       a small amplitude.


4       Look at these drawings of waves. Which statement is true?

 

A       Y has the highest amplitude.

B       Y has the longest wavelength.

C       X has the highest frequency.

D       Y has the highest frequency.

 

8Lc

1       Which statement is not true?

A       light and sound both travel as waves.

B       sound travels at the same speed as light.

C       light travels faster than sound.

D       light and sound can both be reflected.

 

2       Sound can travel through:

A       gases and space.

B       a vacuum.

C       solids and liquids only.

D       solids, liquids and gases.

 

3       Which does sound travel through the quickest?

A       air

B       water

C       iron

D       space

 

4       Sound travels fastest in solid materials which have particles that are:

A       wide apart.

B       close together.

C       very hot.

D       able to move around freely.

 

8Ld

1       The ear changes sound energy into:

A       light energy.

B       electrical energy.

C       noise energy.

D       heat energy.

 

2       Which part of the ear changes sound energy into another form of energy?

A       the cochlea

B       the ear drum

C       the auditory nerve

D       the small bones

 

3       Which structure takes signals (impulses) to the brain?

A       the cochlea

B       the ear drum

C       the auditory nerve

D       the ear piece

 

4       The ear can be blocked by wax. Which statement is true?

A       This causes permanent deafness because the ear drum cannot vibrate.

B       This causes temporary deafness because the ear drum cannot vibrate.

C       This causes permanent deafness because the cochlea cannot vibrate.

D       This causes temporary deafness because the cochlea cannot vibrate.

 

8Le

1       The loudness of a sound can be measured using:

A       a barometer.

B       a sound intensity meter.

C       an ammeter.

D       a voltmeter.

 

2       The unit for loudness of sound is:

A       volume.

B       metre.

C       joule.

D       decibel.

 

3       Which statement is not true?

A       Quiet sounds can harm the ears.

B       The sound near to disco speakers can be louder than a road drill.

C       The eardrum can be damaged by personal stereos.

D       A noisy factory can permanently damage the ears.

 

4       Sound is less likely to get out of a room which has:

A       a wooden floor.

B       black walls.

C       soft curtains and a carpet.

D       spotlights.