Because of its elasticity, which of the following materials would conduct sound waves the fastest?

iron
air
water
oxygen

Iron would conduct sound waves the fastest because of its elasticity. This is because sound waves travel faster through denser materials, and elastic materials like iron are able to quickly transmit sound energy by vibrating in response to the sound wave.

To determine which material would conduct sound waves the fastest based on its elasticity, we need to understand the concept of the speed of sound in different materials. The speed of sound is determined by the elasticity and density of the medium through which it is traveling. In general, sound travels faster in materials that are more elastic and less dense.

Let's assess each of the given materials:

1. Iron: Iron is a dense material and has a high elasticity. Sound waves can travel through iron, but their speed will be relatively slower compared to less dense materials. Iron is not an ideal conductor of sound waves due to its high density.

2. Air: Air is less dense compared to solids, making it a good conductor of sound waves. However, it is less elastic than solids. Therefore, while sound travels faster in air compared to solids, its speed will still be relatively slower compared to other more elastic materials.

3. Water: Water is denser than air and has a higher elasticity than iron. Sound waves can travel through water more efficiently than through air or iron. Therefore, water would conduct sound waves faster than both iron and air.

4. Oxygen: Oxygen is a component of air, and the same principles discussed for air apply to oxygen as well. Being less dense than solids, sound waves can travel through oxygen, but its speed will still be slower compared to other more elastic materials.

Based on the given options, water is likely to conduct sound waves the fastest due to its relatively high elasticity.

The speed of sound in a medium is determined by its elasticity and density. Generally, materials that are more elastic will conduct sound waves faster.

Based on the given options, iron is the most elastic material among them. Therefore, iron would conduct sound waves the fastest.