suppose ripples move from one side of the lake to other, does water across lake?

Ripples on the surface of a lake are caused by the movement of waves, not by the movement of water itself. Waves are caused by the transfer of energy from one place to another, and in the case of water waves, this energy is transferred through the movement of water molecules. However, the water molecules themselves do not move from one side of the lake to the other.

Instead, the water molecules at the surface of the lake move up and down in a circular motion. This motion creates a wave that travels across the surface of the lake. The wave is made up of a series of crests and troughs. The crests are the highest points of the wave, and the troughs are the lowest points. The distance between two adjacent crests is called the wavelength.

The speed of a wave depends on the wavelength and the water depth. Longer waves travel faster than shorter waves. Waves also travel faster in deeper water than in shallow water.

When a wave reaches the shore, it breaks. This is because the wave slows down as it enters shallow water. The water at the front of the wave moves faster than the water at the back of the wave, causing the wave to curl over and break.

So, while ripples on the surface of a lake may appear to be water moving from one side of the lake to the other, this is not actually the case. The water molecules themselves do not move from one side of the lake to the other. Instead, the waves are caused by the movement of energy through the water molecules.