A new highway is cut through a hillside, exposing fresh rock surfaces with sharp edges. What would you predict will happen to this new rock face over many decades of weather?

The rock face will remain perfectly unchanged.

Its sharp edges will be gradually smoothed and worn down.

New, larger rock crystals will grow on the surface.

The rock will become much harder and more resistant to change.

What is the primary reason that small, daily events like wind and rain can create massive landforms such as deep canyons?

The chemical composition of rainwater is extremely corrosive and dissolves rock instantly.

These forces only act during major storms, which have enough power to break rocks apart.

The small, almost invisible changes from these forces accumulate over vast periods of time.

Wind and rain cause rocks to heat up and cool down rapidly, causing them to crack.

rivers can create canyons over geological time.

earthquakes can change the course of a river.

volcanic activity builds up new landforms.

rocks can form from compressed sediment.

Erosion only happens during the winter.

The changes are microscopic and require immense time periods to become noticeable.

Mountains are constantly growing taller, which cancels out the effects of erosion.

Human eyes are not capable of detecting changes in the shape of large rocks.