海沟底部的水压大约是海平面的多少倍？
How many times surface pressure is the water pressure at the bottom of a trench?
每下潜约 10 米增加 1 个大气压，1.1 万米深处水压超过 1000 个大气压，相当于每平方厘米压着一吨多重的东西。
Pressure rises about 1 atmosphere per 10 meters; at 11 km depth it exceeds 1000 atmospheres—roughly a ton pressing on every square centimeter.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Tarbuck & Lutgens,《Earth Science》第14版,Pearson,2015
E. J. Tarbuck and F. K. Lutgens, Earth Science, 14th ed., Pearson, 2015
#水压 #深潜
海沟为什么常常伴着强烈的深源地震？
Why are trenches often accompanied by strong deep earthquakes?
海沟是板块俯冲的入口，下沉的板块在深处摩擦、破裂，会沿着一条倾斜的“贝尼奥夫带”引发从浅到深的一系列地震，所以海沟边缘地震又多又强。
A trench marks where a plate starts subducting; the sinking slab grinds and breaks at depth, triggering a tilted Wadati-Benioff zone of earthquakes from shallow to deep, so trench edges are quake-prone and violent.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Tarbuck & Lutgens,《Earth Science》第14版,Pearson,2015
E. J. Tarbuck and F. K. Lutgens, Earth Science, 14th ed., Pearson, 2015
#俯冲带 #贝尼奥夫带
海洋里最深的地方在哪里，有多深？
Where is the deepest place in the ocean, and how deep is it?
最深的叫马里亚纳海沟，最深处大约有 1.1 万米深，比珠穆朗玛峰还高的一大截如果放进去也露不出头。
The deepest is the Mariana Trench, about 11,000 meters down—so deep that Mount Everest would be completely submerged if dropped in.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Tarbuck & Lutgens,《Earth Science》第14版,Pearson,2015
E. J. Tarbuck and F. K. Lutgens, Earth Science, 14th ed., Pearson, 2015
#海沟 #深度