When the sound intensity is above 120 decibel, what happen to human ears?

1066

---

What is meant by reflection of waves?

965

---

What happens to the velocity of sound with the rise of temperature?

906

---

What are the essential characteristics of a wave?

906

---

Which property of sound is affected by change in air temperature?

922

---

What is periodic wave?

1052

---

What is the principle of superposition?

946

---

Who did first record the sound?

967

---

What is master oscillator?

973

---

How is sound produced?

880

---

What is supersonic?

973

---

What is melody?

966

---

What ways can igneous rock form two ways?

744

---

How continental heat flow is produced?

786

---

What is loam soil?

798

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