"Scree, also called talus, is a term given to an accumulation of broken rock fragments at the base of crags, mountain cliffs, or valley shoulders."
http://en.wikipedia.org/wiki/Scree
It depends on what kind of rock your talking about. If its a "space rock" hurtling towards earth, it is called a shard. If its an earth rock, its a smaller rock, gravel, fragment, or pebble if you will.
Talus or scree.
mountain
It is a mountain.
TROLOLOLOL
A young mountain has steep sides. It also has sharp jagged peaks and narrow valleys. Older mountains are more rounded.
In steep sided, snow covered mountain valleys.
because the mountain streams are steep and the flow is rapid so they cannot normally carry large fragments as they have speed of flow but not enough volume.
The rock fragments that accumulate at the base if a steep slope are usually known as scree or talus.
Face Mountain
mountain
suddenly loomed ahead. Predicate is everything except the subject. The subject in this sentence is 'A steep mountain'
composite volcano
it is steep and very tall.
Not sure
Talus Slope.
A fault block mountain has one steep side.
mountain
Gravity.