Question

1. sound waves travel the fastest through... rock. seawater. space. atmosphere.

Explanation:

Sound waves travel fastest through solids because the particles in solids are closely packed together, allowing for quicker transmission of vibrations. Rock is a solid, seawater is a liquid, space is a vacuum (sound cannot travel in a vacuum), and the atmosphere is a gas. Among the given options, rock (solid) provides the best medium for the fastest sound - wave propagation.

Answer:

rock.