Sound

Answer

Distance = (Speed × Time) ÷ 2 = (340 × 2) ÷ 2 = 340 m We divide by 2 because sound travels to the cliff and back. The echo travels twice the actual distance to the cliff.

Answer

Sound requires a medium (solid, liquid, or gas) to travel. It propagates through compressions and rarefactions of particles. In vacuum, there are no particles to vibrate and transmit sound waves, so s

Answer

The ping-pong ball moves away from the tuning fork. This demonstrates that the tuning fork is vibrating. The vibrations transfer energy to the ball, causing it to move. This proves that sound is produ

Answer

Curved ceilings reflect sound waves uniformly to all parts of the hall. This ensures that sound reaches every corner clearly and evenly. Without proper reflection design, some areas might have poor ac

Answer

Using v = λν Frequency (ν) = Speed (v) ÷ Wavelength (λ) ν = 340 ÷ 2 = 170 Hz This frequency is audible to humans (20 Hz to 20,000 Hz range).

Answer

Compression: Region where air particles are pushed together, creating high pressure and high density. Rarefaction: Region where air particles are spread apart, creating low pressure and low density. S

Answer

Ultrasound waves reflect differently from different tissues. A scanner sends ultrasound into the body and detects reflected waves. These are converted to electrical signals that create images of inter

Answer

In longitudinal waves, particles vibrate parallel to the direction of wave propagation. Sound particles move back and forth along the same direction the sound travels, creating compressions and rarefa