This question is about sound waves.
Which of the following correctly describes the nature of a sound wave traveling through water? A. Transverse and electromagnetic B. Longitudinal and electromagnetic C. Transverse and mechanical D. Longitudinal and mechanical
Describe an experiment to measure the speed of sound in water using an echo from a flat underwater wall.
The speed of sound in fresh water depends on the water temperature.
The graph shows how the speed of sound varies with water temperature.
Use the graph to estimate the speed of sound in fresh water at a temperature of 30 ∘C30\ ^\circ\text{C}30 ∘C.
Describe the pattern shown by the graph.
A marine biologist is tracking marine mammals in a tropical lagoon with water temperature 28 ∘C28\ ^\circ\text{C}28 ∘C, and later in a temperate bay with water temperature 12 ∘C12\ ^\circ\text{C}12 ∘C.
The biologist claims: "A sonar signal will travel faster through the tropical lagoon water than through the temperate bay water."
Do you agree with the biologist? Explain why.
