Vosges and black forest mountains are examples of

1. Analyze the question The question asks which type of mountain the Vosges and Black Forest ranges (in France and Germany, on either side of the Rhine Valley) are.

2. Explain the concept Mountains are classified by how they form:

• Fold mountains: formed when plate collisions compress and buckle rock layers (e.g., Alps, Himalayas, Andes).
• Block (fault-block) mountains: formed when crustal blocks are uplifted or left standing between faults. The land between them may sink, forming a rift valley (e.g., Vosges, Black Forest, Harz, Sierra Nevada).
• Volcanic mountains: formed by the build-up of lava and ash (e.g., Mount Fuji, Mount Cameroon).
• Residual mountains: remnants left after erosion wears away surrounding land (e.g., Scottish Highlands).

3. Step-by-step solution

• The Vosges (France) and the Black Forest (Germany) face each other across the Rhine Rift Valley.
• The land between them dropped down along faults, forming the valley. The two flanking highlands remained standing as raised blocks.
• Mountains on the sides of a rift valley created by faulting are classic block mountains (also called horsts).

4. Answer The Vosges and Black Forest are block mountains, which is option B.

5. Exam tip Memorize the classic pairing: Rhine Rift Valley = Vosges + Black Forest = block mountains. Whenever you see two highlands facing each other across a valley, think "faulting, so block mountains." For fold mountains, remember "Alps, Himalayas, Rockies, Andes."