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Question

Difficulty: MediumOceans, Coastal Processes, and Coastal Landforms

Match each specific landform of coastal erosion on a rocky shoreline with its defining geomorphic description.

  • GeoA narrow, steep-sided coastal inlet created when the roof of a sea cave completely collapses along a joint line
  • BlowholeA vertical shaft connecting a sea cave to the cliff surface above, through which water spray compresses and violently escapes
  • Wave-cut platformA gently sloping rock surface exposed at low tide, created as marine erosion causes cliff faces to retreat landward
  • Wave-cut notchA deep indentation carved into the base of a cliff between high and low tide marks by intense wave action

Answer

Geo matches the narrow steep-sided inlet formed by cave roof collapse; Blowhole matches the vertical shaft connecting a cave to the cliff top; Wave-cut platform matches the gently sloping exposed rock bench left by cliff retreat; Wave-cut notch matches the indentation carved into the base of the cliff.
The pairings correctly reflect the geomorphic development of erosional coastlines: a geo is an open narrow inlet formed by complete cave roof collapse; a blowhole is a vertical pipe opened by air trapped under wave pressure; a wave-cut platform is a exposed rocky shore bench; and a wave-cut notch is the groove eroded into a cliff base at sea level.

Step-by-Step Solution

1
Analyze the landforms associated with the marine erosion of rocky cliff coastlines.
Identify geo, blowhole, wave-cut platform, and wave-cut notch as distinct structural outcomes of wave action.
Each feature corresponds to a specific mechanism of hydraulic action, abrasion, and structural collapse along joint lines.
2
Match each landform to its physical mechanism and morphological characteristic.
Link Geo to roof collapse inlet, Blowhole to vertical compressed-air shaft, Wave-cut platform to eroded intertidal rock bench, and Wave-cut notch to cliff base undercutting.
Correctly matching definitions ensures understanding of the sequence of cliff retreat and cave development.

Key Concept

Erosional Coastal Processes and Landforms
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Topics

Oceans, Coastal Processes, and Coastal Landforms

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