River Landforms – Youthful Stage (Leaving Cert Geography): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What is another name for the youthful stage of a river?
What is another name for the youthful stage of a river?
Upper course
Which type of erosion dominates in the youthful stage of a river?
Which type of erosion dominates in the youthful stage of a river?
Vertical erosion
What are the two main landforms created in the youthful stage?
What are the two main landforms created in the youthful stage?
V-shaped valleys and waterfalls
Why do youthful rivers have narrow channels?
Why do youthful rivers have narrow channels?
Concentrated flow increases erosive power
What process describes when a youthful river erodes vertically into its bed?
What process describes when a youthful river erodes vertically into its bed?
Downcutting
What are interlocking spurs in a V-shaped valley?
What are interlocking spurs in a V-shaped valley?
Hard rock areas that jut into the valley
How are potholes formed in a riverbed?
How are potholes formed in a riverbed?
Swirling water carves deep hollows
What geological condition is required for a waterfall to form?
What geological condition is required for a waterfall to form?
Hard rock overlying softer rock
What is a plunge pool in waterfall formation?
What is a plunge pool in waterfall formation?
Deep hollow created by falling water
What causes a waterfall to retreat upstream over time?
What causes a waterfall to retreat upstream over time?
Undercutting and collapse of overhang
What landform is left behind as a waterfall retreats upstream?
What landform is left behind as a waterfall retreats upstream?
A gorge
What is hydraulic action?
What is hydraulic action?
Force of moving water breaking rock