Flashcards: River Landforms and Processes — 12 cards

River deposition — process?

Dropping of materials when flow slows.

Deposition conditions — example?

Entering lakes or seas, floodplain flooding.

Waterfalls — formation?

Erosion of soft rock beneath hard rock.

Hard vs soft rock — erosion?

Hard resists, soft erodes quickly.

Waterfall formation — key step?

Undercutting soft rock, overhang collapse.

Meanders — cause?

Lateral erosion creating winding bends.

Deposition occurs when?

Flow energy decreases, velocity drops.

Waterfalls — main agent?

Hydraulic action and abrasion.

Soft rock — erosion?

Erodes faster, forms waterfalls.

Hard rock — resistance?

Resists erosion, remains stable.

Meanders — inside bend?

Deposition, slip-off slopes form.

Waterfalls — retreat?

Upstream due to undercutting and collapse.