Hullámok

Hullámok

8th Grade

15 Qs

quiz-placeholder

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Hullámok

Hullámok

Assessment

Quiz

Physics

8th Grade

Practice Problem

Medium

Created by

petra biro

Used 2+ times

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Mennyi a hang terjedési sebessége levegőben?

340 m/s

340 km/s

300 m/s

300 000 m/s

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Melyik a hamis állítás?

A hang is egy hullám.

Hullám bármely halmazállapotú anyagban létrejöhet.

A hang vákuumban is terjed.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Igaz vagy hamis?


Új anyagba lépéskor nem változik a hang sebessége.

igaz

hamis

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Hogyan nevezzük a 20 Hz-nél kisebb frekvenciájú hangot?

ultrahang

infrahang

5.

MULTIPLE SELECT QUESTION

45 sec • 2 pts

Mely állatok használnak ultrahangot?

denevér

bálna

delfin

elefánt

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Melyik mennyiség mértékegysége a decibel?

frekvencia

hangerősség

hullámhossz

7.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

Hogyan jelöljük a decibelt?

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