Download - Ppt unit 8

Unit 8. It’s a noisy world

Objects which make no sounds

Objects which make sounds

Sounds can be…

Pleasant sounds .

Unpleasant sounds .

noises

loud quiet

high

low

Sounds that are bad for your health

http://www.google.es/url?sa=i&rct=j&q=obras&source=images&cd=&cad=rja&docid=z5pDbCRyp-wOaM&tbnid=vFDZ1o_VoeNKsM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.spider-multimedia.com%2Fblog%2Ftag%2Fobras%2F&ei=4IQ0UZafLo3I0AWQ7IGIBw&bvm=bv.43148975,d.d2k&psig=AFQjCNEEuoGU8GMjfAgUJ3ZADhQnjauplg&ust=1362482764229188

http://www.google.es/url?sa=i&rct=j&q=atasco+de+tr%C3%A1fico&source=images&cd=&cad=rja&docid=vB6L1_u4UjafRM&tbnid=vR4zc62ZU99xKM:&ved=0CAUQjRw&url=http%3A%2F%2Frugemotor.blogspot.com%2F2012%2F10%2Fmotorpasionmoto_19.html&ei=I4U0UZPYB4nb0QXntoAo&bvm=bv.43148975,d.d2k&psig=AFQjCNFHyqq_pjmfKJWH5BdqmQpokSRVNQ&ust=1362482810815544

http://www.google.es/url?sa=i&rct=j&q=helic%C3%B3ptero&source=images&cd=&cad=rja&docid=aAjGAvAnRXIaXM&tbnid=i4GF7I1EkaITiM:&ved=0CAUQjRw&url=http%3A%2F%2Fes.123rf.com%2Fphoto_10063296_helicoptero-rescate-azul.html&ei=aoU0UefwM8mR0QXcoYDwAg&bvm=bv.43148975,d.d2k&psig=AFQjCNFexdrVjJj7kH0_t_SP79i44GoOyQ&ust=1362482912653853

What can sound

travel through?

Sounds can travel through air

Sounds can travel through solids

Sounds can travel through water

Machines that make noise

Machines that transmit sound

The end