New York State has three main types of landscapes: mountains formed from distorted bedrock that creates high relief landforms, plateaus formed from horizontal bedrock that also creates high relief, and plains with flat, low relief landforms. Landscapes are primarily shaped by the underlying bedrock structure and elevation, with hard bedrock resisting weathering to form mountains and soft bedrock eroding easily to form plains, while uplifting and leveling geological forces also influence landscape formation over time.