
Helide maailm 7. klass
Authored by Piia Kajando
Education
7th Grade
Used 9+ times

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13 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Mis levivad igasse suunda, kui heliallikas paneb õhuosakesed võnkuma?
Helilained
tuuleiilid
kellukesed
pilved
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Mis on kammertoon?
viiulil mängitud pikk noot
toon, mis on 440dB
esimese oktaavi a, mille võnkesagedus on 440 Hz
üks võnge sekundis
3.
FILL IN THE BLANK QUESTION
1 min • 5 pts
Mida kiiremaid võnkeid heliallikas tekitab, seda ...............heli me kuuleme
4.
FILL IN THE BLANK QUESTION
1 min • 5 pts
Mida aeglasemalt võngub õhk, seda ................. heli tekib
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Millega mõõdetakse õhuvõngete sagedust?
detsibellides
hertsides
sekundites
millimeetrites
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Mis on infrahelid?
Kammertoon
absoluutne kuulmine
helid, mis jäävad allapoole kuulmispiiri
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Mis on ultrahelid?
absoluutne kuulmine
kammertoon
Inimese kuulmispiirist kõrgemad helid
juhthelid
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