Valovi - ponavljanje za ispit znanja

Quiz
•
Physics
•
University
•
Medium
Antonija Grganić
Used 19+ times
FREE Resource
33 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jesu li zvučni valovi brži u vodi ili zraku?
Brži su u vodi.
Brži su u zraku.
Imaju jednaku brzinu u vodi i zraku.
Zvučni valovi se mogu širiti samo kroz zrak, ali ne i kroz vodu.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Čovjek vikne u kanjonu i nakon nekog vremena čuje jeku. Koja tvrdnja je ispravna.
Jeka će se do čovjeka vratiti brže za topla dana.
Jeka će se do čovjeka vratiti brže za hladna dana.
Brzina vraćanja jeke ne ovisi o temperaturi.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kada se baci kamenčić u vodu, nastaje ravni val.
DA
NE
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Valovi zvuka su longitudinalni valovi.
DA
NE
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Zgušnjenja i razrjeđenja su karakteristika kojeg vala?
transverzalnog
longitudinalnog
ravnog
kružnog
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koncentrične kružnice su karakteristika kojeg vala?
transverzalnog
longitudinalnog
ravnog
kružnog
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Infrazvuk je zvuk frekvencije
iznad 20 000 Hz
ispod 20 000 Hz
iznad 20 Hz
ispod 20 Hz
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