Science - Year 3/4A Summer 2 Quiz Answers PowerPoint Sound Sounds Spectacular Session 6 Quiz Answers PowerPoint © Original resource copyright Hamilton Trust, who give permission for it to be adapted as wished by individual users. We refer you to our warning, at the foot of the block overview, about links to other websites.

Answers for the Quiz on Sound

1. Sound is made when something … evaporates B vibrates C extends

2. Sound is … A a type of material B a type of gas C a type of energy

a rapid repeated movement 3. Vibration is … A B C an electrical wave a rapid repeated movement a coded message

4. When an object vibrates you can hear it but … you can never see it vibrating you can never feel it vibrating sometimes you can see it and feel it vibrating

5. When an object vibrates, the air particles all around it … bump into each other freeze Break down

6. Bumping air particles spread outwards from a vibrating object 6. Bumping air particles spread outwards from a vibrating object. This is called … A B C a sound wave a hearing wave an impulse

A B C sensors probes ears People and animals have sound detectors. These are called … A sensors B probes C ears

Animals with big ears hear better because … they have bigger brains B their ears can gather in more sound waves C they are closer to the ground

9. Sound waves (vibrations) can … travel through gases and liquids but not solid things B only travel through gases C travel through solids, liquids and gases

10. When sound waves enter your ear, they cause your to vibrate Choose the correct one to go in the gap A B C ear drum brain hair

11. When your ear drum vibrates (inside your ear), a message is sent to … your eyes B your other ear C your brain

12. Sound waves travel fastest through … solids B liquids C gases

it is completely silent 13. In space … A sounds are deafening B it is completely silent C sound is distorted

A transmit C locate B condense 14. This is because there is no air (or any other gases) in space. Sound can only travel when there are particles to vibrate. The particles the sound. Choose the correct word to go in the gap A transmit C locate B condense

A barrier C container B medium 15. The particles that transmit sound can be solids, liquids or gases. All of these are a that sound can travel through. A barrier C container B medium

16. Sound is measured in … C A B Decibels Kilowatts Newtons

17. A sound will be louder if … 2 of these answers are true and 1 is false. Write down the letter of the answer that is false A B C you are close to the source of the sound more energy is used to produce the sound the vibrating object is big

18. The pitch of a sound is … A C B how loud it is how clear it is how high or low it is

19. Which of these factors will not affect the pitch of a sound? The length of the vibrating object B The thickness of a vibrating string D The tightness of a vibrating string E The size of a vibrating object C The shininess of a vibrating object

20. Which of these instruments can play the lowest notes B C D