Geography - Waterfall + Mezzogiorno
The river erosion processes involved in the formation of waterfalls are hydraulic action, abrasion and solution. Hydraulic action is the force of moving water on the land. Fast flowing water forces out looses rock and soil from the river bed and bank. Soft rock is eroded faster than hard rock (differential erosion) and overtime the bank will collapse. Abrasion is the wearing away of the river bed by its load. Stones carried by the river smooth the river channel deepening & widening it. Solution occurs when the river dissolves the soft rock over which it flows.
The erosion processes mentioned above to form waterfalls in the youthful stage of a river course. Waterfalls occur where a band of hard rock e.g. granite lies across a river bed, soft rock is eroded faster and GRADUALLY a fall forms in the river bed. Hydraulic action and abrasion combine to deepen the fall and a plunge pool forms at the base of the waterfall.
Water splashes against the back wall and erodes it by the process of solution. This splash back soon creates a cave or a hollow behind the waterfall. The overhanging piece of hard rock will eventually collapse and slowly the waterfall retreats up stream (head ward erosion).
Sometimes a steep sided gorge is formed if head ward erosion is very fast. The gorge in Niagara Falls is 11km long and up to 91m deep
Description- What is it your trying to explain.
Example- An example of a waterfall or whatever.
Explanation- How they form and everything about them.
Processes- Processes that form them= Hydraulic action, abrasion, attrition etc.
Diagram- Diagrams explaining the whole process.
Waterfall proper 30/30 Sample Answer The Irish landform that I have studied is the waterfall. Waterfalls can be found in Killarney such as the Torc Waterfall and in Wicklow, the Powers court falls. Waterfalls are a feature of river erosion which is commonly found in the youthful stage of a rivers course. In the formation of waterfalls processes such as hydraulic
The erosion processes mentioned above to form waterfalls in the youthful stage of a river course. Waterfalls occur where a band of hard rock e.g. granite lies across a river bed, soft rock is eroded faster and GRADUALLY a fall forms in the river bed. Hydraulic action and abrasion combine to deepen the fall and a plunge pool forms at the base of the waterfall.
Water splashes against the back wall and erodes it by the process of solution. This splash back soon creates a cave or a hollow behind the waterfall. The overhanging piece of hard rock will eventually collapse and slowly the waterfall retreats up stream (head ward erosion).
Sometimes a steep sided gorge is formed if head ward erosion is very fast. The gorge in Niagara Falls is 11km long and up to 91m deep
Description- What is it your trying to explain.
Example- An example of a waterfall or whatever.
Explanation- How they form and everything about them.
Processes- Processes that form them= Hydraulic action, abrasion, attrition etc.
Diagram- Diagrams explaining the whole process.
Waterfall proper 30/30 Sample Answer The Irish landform that I have studied is the waterfall. Waterfalls can be found in Killarney such as the Torc Waterfall and in Wicklow, the Powers court falls. Waterfalls are a feature of river erosion which is commonly found in the youthful stage of a rivers course. In the formation of waterfalls processes such as hydraulic