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Edexcel P1 topic 4 UltraSounds Infrasounds Earthquakes Questions with 100% Correct Answers | Latest Update 2024
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Edexcel P1 topic 4 UltraSounds Infrasounds Earthquakes Questions with 100% Correct Answers | Latest Update 2024 What is the frequency range of normal human hearing? 20 to 20 000Hz What are frequencies below 20Hz called? infrasounds What are frequencies above 20 000Hz called? ultrasounds What are infrasounds? Sounds with a frequency below 20Hz What are ultrasounds? Sounds with a frequency above 20 000Hz Which animals use infrasounds?Big animals like elephants and waves What do those ani...
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