Heli ja tema omadused
Authored by Toivo Kadarpik
Physics
8th Grade
Used 71+ times
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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Heli tekitavad ...
paigal seisvad kehad.
võnkuvad kehad.
edasi liikuvad kehad.
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Kes/mis nimetatutest on heliallikad?
võnkuv pillikeel
joonlaud laual
jalgu kokku hõõruv rohutirts
vaikiv inimene
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mis tüüpi laine on heli õhus?
põiklaine
ristlaine
pikilaine
paralleellaine
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Heli levimise kiirus sõltub ...
õhu temperatuurist.
keskkonnast.
õhu liikumise kiirusest.
inimese kõrva ehitusest.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mis juhtub heliga vaakumis ehk õhuta ruumis?
Levib väga aeglaselt.
Ei levi üldse.
Levib mitmeid kordi kiiremini.
Levib sama moodi nagu õhuski.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Inimene tekitab heli ... abil.
häälekurdude
hingamistoru
suuõõne
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Infraheli sagedusvahemik on
.. - 16 Hz
16 Hz - 20 kHz
20 kHz - ...
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