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Fuaim - Bliain 10
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Luaigh úsáid amháin d'ultrafhuaim
Scanadh do bhabaĂ­ sa bhroin
Cén orgán a bhraitheann ar fhuaim in ainmhithe?
Cluasa
LĂ­on na tonnta sa soicind =
minicĂ­ocht
Ainm a thugtar ar an uas-airde toinne - ón lár go barr
aimplitiĂşd
CĂ© acu tonn a bhfuil an minicĂ­ocht is airde aige?
3
CĂ© acu tonn a bhfuil an tonnfhad is faide aige?
1
CĂ© acu tonn a bhfuil an aimplitiĂşd is mĂł aige?
2
Tugtar ____________ ar fhuaimeanna níos airde ná 20000 Hz
Ultrafhuaim
Tomhaistear minicĂ­ocht leis an aonad ______
Hertz - Hz
Cad é réimse éisteachta an duine? (na minicíochtaí atá daoine abálta cluisint)
20 - 20000 Hz
Cén fáth nach dtig le fuaim taisteal trí fholús?
mar nĂ­l caithnĂ­nĂ­ ar bith ann chun an fuinneamh a iompar.
Chuala Piaras fuaim ó charr atá 1650m ar shiúl i nidiadh 5 s. Ríomh an luas ag a raibh an fhuaim ag taisteal tríd an aer.
1650 / 5 = 330m/s
An ciall ata le folús ná...
spás gan caithníní
Taistealaíonn fuaim níos gaiste i ... solad / leacht / gás?
solad
Nuair a thaistealaĂ­onn fuaim, aistrĂ­tear _________ Ăł mĂłilĂ­n go mĂłilĂ­n
fuinneamh
TosaĂ­onn fuaim nuair a bhĂ­onn rud Ă©igin ag...
creathadh
TaistealaĂ­onn fuaim mar...
tonnta
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