Answer :
When Lilah skips rocks on a lake, she creates surface waves. Surface waves travel on the water surface as a result of the energy transfer from the rock to the water. Hence, option b is the correct answer.
When Lilah skips rocks on the surface of a lake, she creates surface waves. These are waves that travel along the interface between two different mediums, such as air and water. Surface waves are different from other types of waves like capillary waves, which are small ripples with surface tension as their restoring force, or tidal waves, which are caused by the gravitational pull of the moon and sun.
The surface waves generated by skipping a rock are due to the kinetic energy transferred to the water from the rock. This energy creates ripples that spread out across the surface of the lake.
Surface waves are generally what one observes in a body of water when an object like a rock is thrown in, creating ripples or larger waves depending on the force of the throw. These waves are not associated with the breaking of ice from glaciers, the carbonate compensation depth of the ocean, or with surface runoff from rain or melting ice.
According to the options provided for the types of waves created when skipping rocks, the correct answer is b. surface. Hence, option b is the correct answer.
