1) One type of rapid mass movements is called a "slump". I don't understand how a slump is different from a landslide...can somebody explain?

2) waterhed: land from which water runs off into a stream
divide: elevated region that separates two watersheds

These 2 definitions are from my textbook, but I am completely puzzled by them. I don't get what each of them is and I can't picture them as well...

3) How is a "cirque" different from a "hanging valley"? I know that a hanging valley is suspended on the mountain high above the main valley floor, but so does a cirque?! Then, how are they different?? Can someone explain briefly?

Thanks a lot for clarifying :)

2) Basically, a watershed is an AREA with boundaries?? For example, a watershed is the whole area enclosed by the red line in the following web site's animation?? (is it?)
http://techalive.mtu.edu/meec/module01/whatiswatershed.htm
And the "red line" represents a number of divides??

correct

Thanks for pointing out!

Can anyone help me with Q1 and Q3?

1. Slump is movement of a cohesive, consolidated mass; landslide is movement of an unconsolidated mass.

3. Cirque is the headwall (bowl shaped basin) of an alpine glacier; a hanging valley results when glaciers erode below tributary channels and leave the valley (and usually a spectacular waterfall) suspended above the eroded glacial valley.

http://oz.plymouth.edu/~sci_ed/Turski/Courses/Earth_Science/Images/10.3glacial.JPG

3) But a cirque is also hanging, or suspended above the main valley......that's what confuses me...

Not necessarily. Every alpine glacier produces a cirque at its head. In the illustration shown in the link, the cirques are the bowl shaped basins that were left at the head end of the glaiciers after they melted- not the entire valley. The "main glacier" in the illustration also has a cirque somewhere (not shown)- but definitely not hanging.

1. Slump is movement of a cohesive, consolidated mass; landslide is movement of an unconsolidated mass.

3. Cirque is the headwall (bowl shaped basin) of an alpine glacier; a hanging valley results when glaciers erode below tributary channels and leave the valley (and usually a spectacular waterfall) suspended above the eroded glacial valley.

http://oz.plymouth.edu/~sci_ed/Turski/Courses/Earth_Science/Images/10.3glacial.JPG

For example, the Abbotsford landslide of 1979 in Dunedin, New Zealand, was actually a slump, because the whole hillside moved downwards as one big mass.