Question 2

Sound waves travel the slowest.

Sound waves are mechanical waves that require a medium, such as air, water, or solids, to propagate. Their speed is significantly slower compared to electromagnetic waves, which can travel through a vacuum.

A) Radio waves

Radio waves are a type of electromagnetic wave that travels at the speed of light in a vacuum, approximately 299,792 kilometers per second. Therefore, they are faster than sound waves, making this option incorrect.

B) Gamma waves

Gamma waves, like radio waves, are electromagnetic waves and also travel at the speed of light. Their speed is much greater than that of sound waves, making this option incorrect as well.

C) Visible light waves

Visible light waves are another form of electromagnetic radiation that travels at the speed of light. They are significantly faster than sound waves, which makes this option incorrect.

D) Sound waves

Sound waves are the slowest of the options listed because they rely on the vibration of particles in a medium to travel, resulting in much lower speeds compared to electromagnetic waves. This option is correct.

Conclusion

Sound waves are definitively the slowest type of wave among the options provided, as they rely on a medium for propagation and travel at speeds much lower than those of radio, gamma, or visible light waves. All other options, being forms of electromagnetic radiation, travel at the speed of light, thereby confirming that sound waves are the slowest.