What are the major landforms found at the plate boundaries? 板塊邊界發現的主要地形是什麼？

Mid-oceanic ridges and rift valleys.
中部海洋山脊和裂谷。

Under the sea, the plates stretch and split at a divergent plate boundary. A fissure is formed at the plate boundary. Hot magma rises through the lithosphere and fills the fissure. The hot lava cools upon contact with the water and solidifies to create new crustal materials.
在海下，板塊在發散的板邊界處伸展和分裂。 在板邊界處形成裂縫。 熱岩漿通過岩石圈上升並填滿裂縫。 熱熔岩在與水接觸時冷卻，固化，形成新的地殼材料。

The newly formed crustal materials are hot and have a low density. Therefore, they rise above the existing crust and form a ridge on the seabed known as a mid-oceanic ridge. Two famous examples are the Mid-Atlantic Ridge in the Atlantic Ocean and the East Pacific Rise (Ridge) in the South-east Pacific region.
新形成的地殼材料很熱，密度低。 因此，它們超過現有的地殼，並在海底形成一個稱為中海洋脊的山脊。 兩個著名的例子是大西洋中大西洋脊和東南太平洋地區的東太平洋上升。

Ridge push causes the plates to move apart at these plate boundaries. Tensional force occurs. This causes normal faults to develop gradually on the mid-oceanic ridge. When the central block sinks along the faults, a rift valley is formed.
山脊推動導致板在這些板邊界處移開。 產生張力。 這導致正常斷層在中海洋脊上逐漸發展。 當中心塊沿著斷層下沉時，形成裂谷。

Formation of mid-oceanic ridge and a rift valley :
Step 1: Plates move apart at the plate boundary. A fissure forms
Step 2: Magma rises and fills the fissure. It solidifies and forms a mid-oceanic ridge
Step 3: Under tensional force, normal faults occur. As plates continue to move apart, the central block sinks to form a rift valley. New fissure appears under tensional force.
Step 4: Earlier crust is carried away from the ridge when plates move apart. Magma rises and solidifies at the new fissure.
Step 5: New normal faults occur. Central block sinks and a new rift valley forms.
Step 6: The processes repeat and the mid-oceanic ridge extends sideways.

海洋中脊和裂谷形成：
步驟1：板在板邊界處移開。 裂縫形成
步驟2：岩漿上升並填滿裂縫。 它固化並形成中海洋脊
步驟3：在張力下，發生正常故障。 隨著板塊繼續分離，中心塊下沉形成裂谷。 新的裂縫出現在張力下。
步驟4：當板塊分開時，早期的地殼被從脊部帶走。 岩漿在新的裂縫中升起並凝固。
步驟5：發生新的正常故障。 中央塊下沉和新的裂谷形成。
步驟6：過程重複，中部海洋脊向側面延伸。