[SN T2] 10.3 Fenomena dan Aplikasi Pantulan Gelombang Bunyi
Quiz
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Science
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8th Grade
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Practice Problem
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Jewel Teo
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ikan lumba-lumba memberi amaran tentang kehadiran pemangsa antara satu sama lain menggunakan ultrabunyi. Kita tidak dapat mendengar ultrabunyi kerana
bunyi itu terlampau rendah
manusia hanya boleh mendengar frekuensi bunyi dalam julat dari 20 Hz hingga 20 000 Hz
bunyi itu diserap oleh air
bunyi itu menghasilkan gema yang banyak hingga telinga kita tidak dapat menangkapnya
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Antara berikut, yang manakah julat pendengaran manusia?
16 Hz hingga 12 000 Hz
20 Hz hingga 20 000 Hz
55 Hz hingga 33 500 Hz
2000 Hz hingga 110 000 Hz
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Antara yang berikut, yang manakah digunakan untuk mendengar denyutan jantung seorang pesakit?
Mikrofon
Mikroskop
Stetoskop
Alat bantu pendengaran
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah gema?
Getaran bunyi
Pantulan gelombang bunyi
Perubahan frekuensi bunyi
Gelombang bunyi yang diserap
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Antara pernyataan berikut, yang manakah benar tentang ultrabunyi?
Ultrabunyi boleh didengar oleh manusia sahaja.
Frekuensi gelombang bunyi melebihi 20 000 Hz.
Ultrabunyi adalah sama dengan kesan Doppler.
Ultrabunyi merupakan gelombang bunyi yang berfrekuensi rendah.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Antara haiwan berikut, yang manakah menentukan arah dengan menggunakan ultrabunyi?
Monyet
Kelawar
Obor-obor
Ayam
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah kepentingan sonar untuk navigasi kapal selam?
Membantu dalam ramalan cuaca
Membantu memperlahankan kelajuan kapal selam
Membantu kapal selam bergerak dengan cepat
Membantu untuk menentukan objek di bawah permukaan air
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