Longitudinal Waves Quiz with Answers: Test Your Physics Knowledge

📚 Quick Study Guide

• 🌊 Longitudinal waves are waves where the displacement of the medium is in the same direction as (or opposite direction to) the direction of propagation of the wave.
• 🔊 These waves are often associated with sound waves.
• 📏 Key properties include wavelength ($\lambda$), frequency ($f$), and speed ($v$).
• 🧮 The relationship between these properties is given by the formula: $v = f\lambda$.
• 💨 Longitudinal waves can travel through solids, liquids, and gases.
• 📉 Regions of high pressure are called compressions, and regions of low pressure are called rarefactions.
• 💡 The speed of a longitudinal wave depends on the properties of the medium, such as its density and elasticity.

🧪 Practice Quiz

1. Which of the following is a characteristic of longitudinal waves?
   1. A. Displacement is perpendicular to the wave's direction.
   2. B. Displacement is parallel to the wave's direction.
   3. C. They can only travel through a vacuum.
   4. D. They have crests and troughs.
2. Sound waves are an example of which type of wave?
   1. A. Transverse
   2. B. Electromagnetic
   3. C. Longitudinal
   4. D. Surface
3. What is the relationship between wave speed ($v$), frequency ($f$), and wavelength ($\lambda$)?
   1. A. $v = f + \lambda$
   2. B. $v = f - \lambda$
   3. C. $v = f \lambda$
   4. D. $v = \frac{f}{\lambda}$
4. In a longitudinal wave, what is a region of high pressure called?
   1. A. Trough
   2. B. Crest
   3. C. Rarefaction
   4. D. Compression
5. What can longitudinal waves travel through?
   1. A. Only solids
   2. B. Only liquids
   3. C. Only gases
   4. D. Solids, liquids, and gases
6. If a longitudinal wave has a frequency of 500 Hz and a wavelength of 2 meters, what is its speed?
   1. A. 250 m/s
   2. B. 502 m/s
   3. C. 1000 m/s
   4. D. 250000 m/s
7. Which property of the medium affects the speed of a longitudinal wave?
   1. A. Color
   2. B. Density
   3. C. Brightness
   4. D. Temperature (only)