Fill water in bath tub, draw a red line to mark the water level.
Without touching the water, how can you make water level change?I will use hair blower to heat up the side of the tub, so thermal expansion of the tub will change the red line position.
Sunlight circling around earth, heats up landmass. Thermal expansion cause coastal seabed bending.
Different size, shape and slop of the bay have different hight of the tides.
