Tonight two interesting questions asked on the MSN.
First what is wave refraction and does it occur if the beach is straight. My answer is that it should not.
Please got to this website for great animation
http://www.wiley.com/college/strahler/0471480533/animations/ch19_animations/animation2.html
Next some one asked what is the difference between a V shaped valley and a gorge
Please go to this website to see.
http://geobytesgcse.blogspot.com/2006/11/upper-course-of-river-v-shaped-valleys.html
This is a steep sided valley
A gorge like the Grand Canyon is very muc deeper and steeper.
In fact the Grand Canyon is one mile deep.
Hope this will help
ask and you shell receive
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