Understanding Sound Waves

What type of wave is a sound wave?

• Transverse wave

• Longitudinal wave

• Electromagnetic wave

• Surface wave

In which medium does sound travel the fastest?

• Vacuum

• Steel

• Water

• Air

What happens to the wavelength of a sound wave if its frequency increases while the speed remains constant?

• Wavelength increases

• Wavelength decreases

• Wavelength remains the same

• Wavelength becomes zero

Which factor does NOT affect the speed of sound in air?

• Pressure

• Color

• Humidity

• Temperature

What is the baseline speed of sound in air at 0°C?

• 343 m/s

• 331 m/s

• 300 m/s

• 360 m/s

How does humidity affect the speed of sound in air?

• Decreases speed

• Reverses direction

• Increases speed

• No effect

What is the frequency of a sound wave with a wavelength of 1.70 m in air at 15°C?

• 400 Hz

• 300 Hz

• 200 Hz

• 100 Hz

If an explosion occurs 350 m above the ocean, how long does it take for the sound to reach a submarine 350 m below the surface?

• 2.6 seconds

• 5.2 seconds

• 3.9 seconds

• 1.3 seconds

What is the speed of sound in water given a bulk modulus of 2.0 * 10^9 Pa and a density of 1000 kg/m³?

• 1200 m/s

• 1500 m/s

• 1000 m/s

• 1414 m/s

Which equation is used to calculate the speed of sound in a gas?

• Square root of temperature over density

• Square root of Young's modulus over density

• Square root of bulk modulus over density

• Square root of pressure over density