What causes tides?
Gravitational pull of sun and moon
What causes high tides?
Part of the earth that faces the moon
What causes low tides?
When moon is at 90 degree angle
What causes neap tides?
Sun and moon at 90 degree angle
What causes spring tides?
Moon, Sun and Earth aligned
Low tidal range means?
There is less erosion
High tidal range mean?
There is more erosion
Example of high energy coast
Cornish coast
Example of low energy coasts
Sheltered bays