꧁aaaaa꧂Giải sbt Khoa học tự nhiên 7 chủ đề 4 âm thanh

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ꦫGiải sách bài tập Khoa học tự nhiên 7 - Chân trời sáng tạo, SBT KHTN 7 - CTST

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4.9 trên 7 phiếu

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Bài 12. Mô tả sóng âm
Khi một người thổi sáo, tiếng sáo được tạo ra bởi sự dao động của ⛄ Xem lời giải
Bài 13. Độ to và độ cao của âm
Hình dưới đây là đồ thị dao động âm của một sóng âm trên màn hình dao động ký. Độ dài của đoạn nào mô tả biên độ âm? 📖 Xem lời giải

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Bài 14. Phản xạ âm
Những vật liệu mềm, mịn, nhiều bọt xốp có khả năng hấp thu âm và ngăn chặn sự truyền âm được gọi là ✃ Xem lời giải

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Bài 12. Mô tả sóng âm

Bài 13. Độ to và độ cao của âm

Bài 14. Phản xạ âm