The Himalayan Mountains are rugged,jagged peaks,while the Appalachians are smooth and rolling.Why is there a difference?
A)The Himalayas are much older and the rocks have begun breaking off.
B)The Himalayas are volcanic mountains and the Appalachians are not.
C)The Appalachians are much older and have been smoothed by erosion.
D)The Appalachians are younger and have just started to be thrust upward by plate tectonics.

Question

Quizplus · Accepted Answer

The Appalachians are much older than the Himalayas and have been subject to millions of years of erosion which has worn down the peaks and smoothed out the landscape. The Himalayas, on the other hand, are still being uplifted by tectonic activity and are much younger, resulting in their rugged and jagged appearance.

The Himalayan Mountains Are Rugged,jagged Peaks,while the Appalachians Are Smooth