A plain. On flat ground, the chance of a rock moving is fairly small. On a hillside, any slight force on the rock will cause it to roll down the hill.
A plain. On flat ground, the chance of a rock moving is fairly small. On a hillside, any slight force on the rock will cause it to roll down the hill.
The chronological order of rock layers from oldest to youngest
Landslides
plain rock
mudslide
It can be, but most are dens dug into a hillside that slope upward to avoid floods.
mudslide
an avalanche
Some rocks cost 100 times more than others - and that's just plain rocks, not gems. So pick a rock, any rock.
Rock of Gibraltar (A+)
Heat and pressure from overlying rock layers (or heat from adjacent magma) causes the atoms of the original rock to ionize and recrystallize. Metamorphic rocks are more dense and structurally stable than the 'protolith' from which they are formed.
a plain is a large flat land and a mountain is a giant weather rock.