ملخص أنواع الحدود المتقاربة - كتاب علوم الأرض و الفضاء - الصف 12 - الفصل 1 - المملكة العربية السعودية

الجدول ١-٥ ملخص أنواع الحدود المتقاربة نوع الحد التقاربي مثال على منطقة تأثرت بالحدود المتقاربة مثال على التضاريس --- SECTION: تقارب محيطي - محيطي --- تقارب محيطي - محيطي جزر ألوشيان جزيرة شاجولاك في ألاسكا --- SECTION: تقارب محيطي - قاري --- تقارب محيطي - قاري سلسلة جبال الأنديز بركان أوزورنو في تشيلي --- SECTION: تقارب قاري - قاري --- تقارب قاري - قاري سلسلة جبال الهيمالايا قمة أما - دبلان في نيبال وزارة التعليم 167 Ministry of Education 2025 - 1447 --- VISUAL CONTEXT --- **TABLE**: الجدول ١-٥: ملخص أنواع الحدود المتقاربة Description: A table summarizing different types of convergent plate boundaries, showing a diagram for each type, an example of an affected region, and an example of the resulting landforms. Table Structure: Headers: نوع الحد التقاربي | مثال على منطقة تأثرت بالحدود المتقاربة | مثال على التضاريس Rows: Row 1: تقارب محيطي - محيطي (مع رسم توضيحي) | جزر ألوشيان (صورة) | جزيرة شاجولاك في ألاسكا (صورة) Row 2: تقارب محيطي - قاري (مع رسم توضيحي) | سلسلة جبال الأنديز (صورة) | بركان أوزورنو في تشيلي (صورة) Row 3: تقارب قاري - قاري (مع رسم توضيحي) | سلسلة جبال الهيمالايا (صورة) | قمة أما - دبلان في نيبال (صورة) Data: The table is structured into three columns: 'Type of Convergent Boundary', 'Example of an area affected by convergent boundaries', and 'Example of landforms'. It has three rows, each detailing a specific type of convergent boundary with corresponding visual examples. Context: This table provides a structured overview of convergent plate boundaries, illustrating the geological processes and their resulting landforms with both schematic diagrams and real-world photographic examples. **DIAGRAM**: تقارب محيطي - محيطي Description: A cross-sectional diagram illustrating the convergence of two oceanic plates. One oceanic plate subducts beneath the other, forming an oceanic trench (أخدود بحري) and volcanic island arcs (أقواس الجزر البركانية) on the overriding plate. Magma (صهارة) rises from the mantle (الستار) due to the melting of the subducting plate. Key Values: أخدود بحري, أقواس الجزر البركانية, صفيحة محيطية, صهارة, صفيحة محيطية غاطسة, الستار Context: This diagram visually explains the geological features and processes associated with oceanic-oceanic convergent boundaries, such as subduction, trench formation, and volcanic island arc development. **IMAGE**: جزر ألوشيان Description: An aerial photograph showing a chain of islands, likely volcanic, emerging from the ocean. The islands appear rugged and green, characteristic of island arcs formed at oceanic-oceanic convergent boundaries. Context: This image serves as a real-world example of the landforms (volcanic island arcs) that result from oceanic-oceanic plate convergence, as depicted in the adjacent diagram. **IMAGE**: جزيرة شاجولاك في ألاسكا Description: A photograph of a steep, green, rocky island rising from the sea, with visible bird colonies on its slopes. This island is an example of a landform resulting from oceanic-oceanic convergence. Context: This image provides another specific example of an island formed by oceanic-oceanic convergence, located in Alaska, reinforcing the concept with a tangible geographical feature. **DIAGRAM**: تقارب محيطي - قاري Description: A cross-sectional diagram illustrating the convergence of an oceanic plate and a continental plate. The denser oceanic plate subducts beneath the continental plate, forming an oceanic trench (أخدود بحري) and a volcanic mountain range (سلسلة جبال بركانية) on the continental margin. Magma (صهارة) rises from the mantle (الستار) as the subducting plate melts. Key Values: سلسلة جبال بركانية, أخدود بحري, صفيحة قارية, صفيحة محيطية غاطسة, صهارة, الستار Context: This diagram visually explains the geological features and processes associated with oceanic-continental convergent boundaries, including subduction, trench formation, and the development of volcanic mountain ranges. **IMAGE**: سلسلة جبال الأنديز Description: A panoramic photograph of a vast, rugged mountain range with high peaks and deep valleys. The Andes Mountains are a prime example of a mountain range formed by the convergence of an oceanic plate and a continental plate. Context: This image showcases a real-world example of a major mountain range (the Andes) that is a direct result of oceanic-continental plate convergence, linking the theoretical diagram to a prominent geographical feature. **IMAGE**: بركان أوزورنو في تشيلي Description: A photograph of a conical, snow-capped volcano with a forested base, located in Chile. Osorno Volcano is an example of a volcanic landform found within mountain ranges created by oceanic-continental convergence. Context: This image provides a specific example of a volcano (Osorno) that is characteristic of the volcanic activity associated with oceanic-continental convergent boundaries, further illustrating the geological processes. **DIAGRAM**: تقارب قاري - قاري Description: A cross-sectional diagram illustrating the convergence of two continental plates. As continental plates collide, neither subducts significantly due to their buoyancy. Instead, the crust is intensely folded and faulted, leading to the formation of massive mountain ranges. An old oceanic plate (صفيحة محيطية قديمة) may have been consumed prior to the continental collision. The mantle (الستار) is shown beneath the thickened crust. Key Values: صفيحة قارية, صفيحة محيطية قديمة, الستار Context: This diagram visually explains the geological processes and resulting landforms associated with continental-continental convergent boundaries, emphasizing crustal thickening and mountain building. **IMAGE**: سلسلة جبال الهيمالايا Description: A majestic photograph of a vast, snow-covered mountain range with extremely high, jagged peaks. The Himalayas are the most prominent example of a mountain range formed by the collision of two continental plates. Context: This image presents a real-world example of the immense mountain ranges (the Himalayas) that are a direct consequence of continental-continental plate convergence, demonstrating the scale of these geological events. **IMAGE**: قمة أما - دبلان في نيبال Description: A photograph of a distinctive, snow-covered mountain peak, Ama Dablam, located in Nepal. This peak is part of the Himalayan range, serving as a specific example of a landform resulting from continental-continental convergence. Context: This image provides a specific, iconic example of a mountain peak within the Himalayas, further illustrating the dramatic landforms created by continental-continental plate collision.