Edexcel P1 topic 4 UltraSounds Infrasounds Earthquakes Questions with 100% Correct Answers | Latest Update 2024

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 animals use infrasounds for? To communicate Name two natural events that emits infrasounds Meteors and volcanic eruptions Which animals use ultrasounds?Dolphins and bats What do those animals use ultrasounds for? To hunt Why would scientists use infrasounds in the jungle? To locate animals hiding; because you may not SEE the animals but you can record the infrasounds Why do we use ultrasounds for foetus? To see if the foetus is growing properly What is the epicentre? The point of the Earth surface directly above the focus of an Earthquake What is the "focus" of an Earthquake? The point inside the Earth where the Earthquake starts from Is a P-wave a longitudinal or a transverse wave? longitudinal Is a S-wave a longitudinal or a transverse wave? transverse Which wave arrives first? S or P? P Why can scientists not predict Earthquakes? They can not measure the forces between the tectonic plates Name 3 uses of ultrasounds