海山和平顶海山（盖奥特）有什么不同？
How do seamounts and guyots differ?
海山是未露出海面的火山锥，盖奥特则是顶部被古代波浪夷平、后又沉没的死火山，记录板块漂移历史。
A seamount is a submarine volcanic cone; a guyot is one whose top was planed flat by ancient waves then sunk, recording plate drift.
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
#海山 #盖奥特
白垩纪的海洋缺氧事件是什么？
What were the Cretaceous Ocean Anoxic Events?
温暖期海洋分层强、底层缺氧，黑色富含有机质页岩广布，既埋藏大量石油母质也造成生物危机。
In warm periods the ocean stratified and the deep turned anoxic, laying down black organic shales that stored oil source-rock yet caused biotic crisis.
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
#海洋缺氧 #白垩纪
AMOC若突然减弱会带来什么后果？
What if the AMOC suddenly weakens?
模型显示传送带变慢会让西北欧明显变冷、热带雨带偏移、海平面重新分布并扰乱全球碳与热量分配。
Models show a slower conveyor could cool northwest Europe, shift tropical rains and redistribute sea level, disrupting global carbon and heat.
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
#AMOC #临界点
什么是海洋酸化？自工业革命以来表层海水 pH 大约下降了多少？
What is ocean acidification and by roughly how much has surface ocean pH fallen since preindustrial times?
海洋酸化指海水吸收大气 CO2 后生成碳酸、降低 pH 的过程。自工业革命以来表层海水 pH 已从约 8.2 降至约 8.1，相当于氢离子浓度上升约 30%，威胁珊瑚与贝类等钙化生物。
Ocean acidification is the drop in seawater pH as the ocean absorbs atmospheric CO2 and forms carbonic acid. Since the preindustrial era surface pH has fallen from about 8.2 to about 8.1, a roughly 30% increase in hydrogen ion concentration, threatening corals and shell-forming organisms.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#海洋酸化 #二氧化碳 #pH #钙化
什么是赤潮？
What is a red tide?
某些浮游藻类在富营养化海水中暴发性繁殖，使海水变色并可能释放毒素，危害鱼类和人类。
Some plankton algae bloom explosively in nutrient-rich water, discoloring the sea and possibly releasing toxins harmful to fish and people.
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
#海洋 #赤潮
深海"全球输送带"是怎么转起来的？
How does the deep ocean's global conveyor belt operate?
北大西洋高纬海面强烈冷却并蒸发，海水变冷变咸、密度增大而下沉，形成北大西洋深层水，向南流经大西洋底，绕南极进入印度洋与太平洋，在深层缓慢上涌，再随表层洋流回到北大西洋，构成全球温盐环流。温度与盐度共同决定密度，故称热盐环流。它把热量、氧和碳输送到全球深海，若格陵兰冰盖大量融水注入，淡化海水可能减弱甚至关闭输送带，对全球气候影响深远。
In the high-latitude North Atlantic, strong cooling and evaporation make surface water cold and salty, dense enough to sink as North Atlantic Deep Water; it flows south along the Atlantic bottom, rounds Antarctica into the Indian and Pacific Oceans, slowly upwells, and returns via surface currents—the global thermohaline circulation, named because temperature and salinity jointly set density. It delivers heat, oxygen, and carbon to the deep ocean worldwide; if large meltwater pulses from Greenland freshen the surface, the sinking could weaken or even shut down, with far-reaching climate consequences.
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
#温盐环流 #北大西洋深层水 #输送带
月球为什么一年比一年远离地球？潮汐摩擦如何影响地球自转？
Why does the Moon recede from Earth every year, and how does tidal friction affect Earth's spin?
月球的潮汐鼓包并不正对月球，而是因地球自转比月球公转快而被"带"在前面，鼓包的引力反过来拉月球向前加速、拉地球自转减速。结果是角动量从地球自转向月球轨道转移，月球以每年约3.8厘米的速度远离地球（激光测月反射镜测得），同时地球自转每世纪约减慢近2毫秒。反过来，月球曾被潮汐锁定、永远同一面朝向地球，也是同类机制的结果。数十亿年前地球自转快得多，一天只有约20小时甚至更短。
The Moon's tidal bulge does not point exactly at the Moon: because Earth spins faster than the Moon orbits, the bulge is dragged ahead of it, and its gravity pulls the Moon forward while braking Earth's rotation. Angular momentum transfers from Earth's spin to the lunar orbit, so the Moon recedes about 3.8 cm per year (measured by lunar laser ranging) while Earth's day lengthens by nearly 2 milliseconds per century. The Moon's own tidal lock, always showing the same face, arises from the same mechanism. Billions of years ago Earth spun much faster, with days of only about 20 hours or less.
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
#潮汐摩擦 #月球远离 #自转减速
什么是温盐环流（全球输送带）？
What is thermohaline circulation?
温盐环流由海水的温度和盐度差异形成的密度差驱动，在全球海洋中缓慢循环，被称为「全球输送带」。它把表层热量带到深海，对全球气候调节至关重要。
Thermohaline circulation is driven by density differences from ocean temperature and salinity, slowly looping through the global ocean as a 'global conveyor belt.' It carries surface heat into the deep sea and is vital to climate regulation.
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
#温盐环流 #密度 #输送带
什么是大陆架？
What is the continental shelf?
大陆架是大陆向海洋自然延伸、水深较浅（一般小于200米）的平缓海底区域，渔业和油气资源富集。
The continental shelf is the shallow (usually under 200 m), gently sloping seabed where continents extend into the ocean, rich in fisheries and oil gas.
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
#海洋 #大陆架
珊瑚白化背后的机理是什么？
What is the mechanism behind coral bleaching?
海水过热或酸化使珊瑚把共生的虫黄藻排出，失去颜色和养分来源，持续白化便会大量死亡。
Overwarm or acidified water makes corals expel their symbiotic algae, losing color and food, and prolonged bleaching kills them.
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
#珊瑚白化 #虫黄藻
平顶海山（盖奥特）为什么山顶是平的？
Why do flat-topped seamounts (guyots) have flattened summits?
它们最初是露出海面的火山岛，被海浪拍打出平顶；后来板块带着它们远离热点并下沉，平顶就被保留在海底。
They began as volcanic islands whose tops were planed flat by waves; later the plate carried them away from the hotspot and they sank, preserving the flat top underwater.
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
#盖奥特 #海蚀
深海热液喷口是什么？
What is a deep-sea hydrothermal vent?
海水沿裂缝渗入地壳被岩浆加热，携带着硫化物等从喷口喷出，形成“黑烟囱”，滋养不靠阳光的生态系统。
Seawater seeps into crust, is heated by magma and rises through vents carrying sulfides, forming 'black smokers' that feed sunlight-independent ecosystems.
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
#海洋 #热液喷口
什么是黑潮？
What is the Kuroshio Current?
黑潮是沿西太平洋向北流的高温高盐暖流，影响日本和中国东海岸的气候与渔业。
The Kuroshio is a warm, salty western-Pacific current shaping climate and fisheries of East Asia.
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
#海洋 #黑潮
上升流海域为什么总是鱼群聚集？
Why do upwelling zones attract so many fish?
沿岸风吹走表层海水，深层冷水涌上来填补，把海底沉积物里的硝酸盐、磷酸盐等营养盐带到透光层。浮游植物大量繁殖，浮游动物、小鱼到大鱼的食物链随之兴旺，形成著名渔场，如秘鲁沿岸和加利福尼亚海域。上升流海水温度低，还能让沿岸气候偏凉、雾气弥漫。
When coastal winds blow surface water offshore, cold deep water rises to replace it, carrying nitrates, phosphates, and other nutrients from the seafloor up into the sunlit zone. Phytoplankton bloom, and the food chain from zooplankton to small then large fish flourishes, creating famous fisheries off Peru and California. The rising cold water also keeps coastal climates cool and foggy.
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
#上升流 #营养盐 #渔场
什么是鲸落？
What is a whale fall?
鲸鱼尸体沉到海底，成为深海生物数年的食物与栖息地，是独特的生态系统。
A dead whale sinking to the seabed feeds deep-sea life for years, a unique ecosystem.
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
#海洋 #鲸落
海洋酸化如何影响珊瑚和贝类？
How does ocean acidification affect corals and shellfish?
海水吸收二氧化碳后碳酸根减少、饱和度下降，珊瑚和贝类更难形成碳酸钙外壳，幼体尤其脆弱。
Absorbed CO2 lowers carbonate ions and saturation, making it harder for corals and shellfish to build calcium-carbonate shells, harming larvae most.
难度 进阶 · 适合 大众
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
#海洋酸化 #珊瑚
什么是海水盐度？
What is ocean salinity?
盐度是每千克海水中溶解盐的克数，平均约35克，蒸发强或降水多的海区盐度会变化。
Salinity is grams of dissolved salt per kg of seawater, averaging about 35, varying with evaporation and rain.
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
#海洋 #盐度
海面洋流为什么在大洋里绕成圆圈？
Why do surface currents circle around in the oceans?
信风在西侧、西风带在东侧持续推动表层海水，加上科里奥利效应使水流在北半球右偏、南半球左偏，海水就在各大洋绕出巨大的顺时针或逆时针漩涡，叫大洋环流。环流把热量从低纬送到高纬，调节全球气候，例如西边界流（湾流、黑潮）流速最快、最暖。环流圈还收集漂浮物，形成大洋"垃圾带"。
Steady trade winds push surface water westward while the westerlies push it eastward, and the Coriolis effect deflects flow right in the Northern Hemisphere and left in the Southern, so water swirls into giant clockwise or counterclockwise loops called gyres. Gyres carry heat from low to high latitudes and regulate climate; the warm, fast western boundary currents such as the Gulf Stream and Kuroshio are their most striking parts. Gyres also concentrate floating debris into ocean garbage patches.
难度 进阶 · 适合 大众
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
#大洋环流 #科里奥利效应 #黑潮
甲烷水合物（可燃冰）是什么？
What is methane hydrate?
它是甲烷分子被低温高压下的冰晶包裹成的白色固体，藏在深海沉积和冻土中，受热或减压会释放大量气体。
Methane trapped in ice-like cages under cold high pressure, found in deep sediments and permafrost, it releases gas if warmed or decompressed.
难度 进阶 · 适合 大众
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
#甲烷水合物 #可燃冰
为什么农历初一、十五的潮水特别大？
Why are tides especially large around the new and full moon?
潮汐主要由月球引力造成，太阳也贡献一部分。农历初一和十五，太阳、月球与地球大致排成一线，太阳和月球的引力叠加，涨落幅度最大，叫大潮。上弦月和下弦月时，太阳与月球的方向互相垂直，两个引力部分抵消，潮差最小，叫小潮。潮差大小还受海岸形状的影响。
Tides are driven mainly by the Moon's gravity, with the Sun adding a smaller contribution. Around the new and full moon the Sun, Moon, and Earth line up, so the two pulls combine into the largest tides, called spring tides. At the first and third quarters the Sun and Moon act at right angles and partly cancel, producing the smallest tides, called neap tides. Coastal shape also strongly affects how large the range becomes.
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
#大潮 #小潮 #天文潮
大西洋经向翻转环流（AMOC）对气候有什么作用？
What role does the Atlantic Meridional Overturning Circulation (AMOC) play in climate?
AMOC把表层暖咸水向北输送，在高纬冷却下沉后以深层水向南回流，是“全球海洋传送带”的关键环节。它向北大西洋和欧洲输送热量，调节海洋储碳并为深层水供氧。IPCC评估它在21世纪很可能减弱，极端情景下甚至可能在百年尺度上崩溃，深刻改变区域气候。
AMOC carries warm salty surface water northward, which cools and sinks at high latitudes and returns south as deep water—a key link in the global ocean conveyor belt. It delivers heat to the North Atlantic and Europe, regulates ocean carbon storage, and oxygenates the deep ocean. IPCC assesses it will very likely weaken this century, and in extreme scenarios could collapse on centennial timescales, profoundly altering regional climate.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#大西洋翻转环流 #气候系统 #海洋环流
海山是什么，为什么海底会有成串的海山？
What are seamounts, and why do they sometimes line up in chains?
海山是海底的火山锥。当板块缓慢移过地幔中的固定热点，火山就在不同位置依次喷发，留下一串年龄递进的海山（如夏威夷海山链）。
Seamounts are underwater volcanic cones. As a plate moves slowly over a fixed mantle hotspot, volcanoes erupt at successive spots, leaving an age-progressive chain like the Hawaiian seamounts.
难度 进阶 · 适合 小学高段(9-12)
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
#海山 #热点
什么是大洋环流涡（gyre）和太平洋垃圾带？
What are ocean gyres and the Great Pacific Garbage Patch?
大洋环流涡是受风与地转偏向力驱动、在各大洋中形成的巨大环状洋流系统，全球约有五个。塑料垃圾在副热带涡中聚集，形成如「太平洋垃圾带」这样的漂浮废弃物集中区。
An ocean gyre is a large, circular current system driven by winds and the Coriolis effect, with about five across the global ocean. Plastic debris collects in subtropical gyres, forming concentrations like the Great Pacific Garbage Patch.
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
#环流涡 #洋流 #塑料垃圾
湾流和大西洋经向翻转环流（AMOC）是什么？
What are the Gulf Stream and AMOC?
湾流是北大西洋的暖流，AMOC是它连同深层冷水回流组成的传送带，把热量送往高纬、调节欧洲气候。
The Gulf Stream is a North Atlantic warm current; AMOC is the conveyor with deep return flow that carries heat to high latitudes and shapes Europe's climate.
难度 进阶 · 适合 大众
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
#湾流 #AMOC
南极绕极流为什么重要？
Why is the Antarctic Circumpolar Current important?
它是唯一连通三大洋、环绕南极的洋流，隔离了南极的寒冷、驱动深层水形成，深刻影响全球环流。
The only current linking three oceans around Antarctica, it isolates its cold, drives deep-water formation and strongly shapes global circulation.
难度 进阶 · 适合 大众
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
#南极绕极流 #洋流
什么是大西洋中脊？
What is the Mid-Atlantic Ridge?
大西洋中脊是横贯大西洋底部、由板块张裂形成的海底山脉，是离散型边界的典型代表。新的洋壳在此不断生成，使大西洋以每年数厘米的速度加宽。
The Mid-Atlantic Ridge is a seafloor mountain chain running down the Atlantic along a divergent boundary where plates pull apart. New oceanic crust forms there, widening the Atlantic by a few centimeters each year.
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
#大西洋中脊 #洋中脊 #离散边界
什么是大洋环流，例如湾流？
What are ocean currents, such as the Gulf Stream?
大洋环流是海水大规模、持续的水平流动，由风、海面温度和盐度差异共同驱动。湾流是一支把墨西哥湾温暖海水送往北大西洋的强流，显著温暖了西欧气候。
Ocean currents are large, persistent movements of seawater driven by wind, temperature, and salinity differences. The Gulf Stream is a strong current carrying warm water from the Gulf of Mexico into the North Atlantic, markedly warming Western Europe's climate.
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
#洋流 #湾流 #热量输送
为什么大多数海边一天有两次涨潮？
Why do most coasts see two high tides a day?
月球引力把正对月球一侧的海水拉成一个高潮鼓包，同时地球与月球绕共同质心转动产生的离心力，在背对月球一侧也托起另一个鼓包。地球自转一圈，一个地点先后经过这两个鼓包，于是大约每隔12小时25分钟涨落一次，一天两次。大陆形状和海底地形会改变本地潮汐的细节。
The Moon's gravity pulls the water facing it into one high-tide bulge, while the centrifugal force of the Earth-Moon system raises a second bulge on the far side. As Earth rotates, any coastline passes beneath both bulges in turn, so high tide returns about every 12 hours 25 minutes—twice a day. Coastline shapes and seafloor relief modify the details of local tides.
难度 进阶 · 适合 大众
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
#潮汐 #引潮力 #潮汐鼓包
海水为什么从上到下分成好几层？
Why is seawater layered from top to bottom?
阳光加热表层海水，风浪混合使上层温度均匀，往下温度骤降的界面叫温跃层。密度随温度和盐度变化，冷水、咸水更重，于是形成稳定分层：表层的混合层、中间的温跃层和深层的冷水。这种分层阻挡上下物质交换，深层水的氧和营养主要靠洋流和下沉补充。海洋还按深度划分为透光层、弱光层和无光层等生态带。
Sunlight warms the surface, and wind mixes the upper layer to a uniform temperature, below which a sharp drop called the thermocline occurs. Density depends on temperature and salinity—cold, salty water is heavier—so the ocean stabilizes into a mixed surface layer, the thermocline, and deep cold water. The layering blocks vertical exchange, so oxygen and nutrients in deep water arrive mainly through currents and sinking. Ecologically, the ocean is also zoned into sunlit, twilight, and midnight layers.
难度 进阶 · 适合 大众
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
#海洋分层 #温跃层 #密度
马里亚纳海沟有多深？
How deep is the Mariana Trench?
马里亚纳海沟最深处约11000米，是地球海洋的最低点，压力是海面的千倍以上。
Its deepest point is about 11,000 m, the lowest spot in the ocean, under over 1000× sea-level pressure.
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
#海洋 #海沟
什么是海啸？
What is a tsunami?
海底地震、火山或滑坡突然使大量海水移位，形成高速长浪，登陆时浪高骤增造成灾害。
A seafloor quake, volcano or landslide suddenly displaces huge volumes of water, forming fast long waves that grow tall near shore and cause disaster.
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
#海洋 #海啸
海啸的波长和速度通常有多大？
How long and fast are tsunami waves usually?
深海中海啸波长可达数百公里、时速约700公里却只有一米高，近岸变短变高才成巨浪。
In deep ocean a tsunami has a wavelength of hundreds of km and speed near 700 km/h but only about a meter high, growing tall only near shore.
难度 进阶 · 适合 大众
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
#海啸 #波长
珊瑚礁为什么重要？
Why are coral reefs important?
珊瑚礁虽只占海底一小部分，却养育了约四分之一的海洋物种，还能保护海岸免受波浪侵蚀。
Covering a small part of the seabed, reefs shelter about a quarter of marine species and protect coasts from wave erosion.
难度 进阶 · 适合 小学高段(9-12)
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
#海洋 #珊瑚礁
海洋一般分为哪几个深度带？
What are the main ocean depth zones?
按光照从浅到深，主要分为透光层、弱光层和深海无光层。透光层有充足阳光供光合作用，越往下越暗越冷，无光层则终年漆黑、压力巨大。
From shallow to deep by light, the ocean is divided into the sunlit (epipelagic), twilight (mesopelagic), and midnight (bathypelagic and deeper) zones. The sunlit layer has enough light for photosynthesis; deeper zones grow darker, colder, and more pressurised.
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
#透光层 #弱光层 #无光层
海岸侵蚀和风暴潮如何威胁沿海城市？
How do coastal erosion and storm surge threaten coastal cities?
风浪长期啃食岸线，台风带来的风暴潮叠加天文大潮猛灌内陆，加剧淹没与房屋倒塌。
Waves steadily eat the shoreline while a typhoon's storm surge stacked on high tide floods inland, worsening inundation and collapse.
难度 进阶 · 适合 大众
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
#海岸侵蚀 #风暴潮
微塑料是如何进入并影响海洋生物的？
How do microplastics enter and affect marine life?
塑料随河流入海破碎成微粒，被浮游生物和鱼类误食后沿食物链上行，还可能吸附有毒物质。
Plastics wash to sea and break into particles eaten by plankton and fish, moving up the food chain and carrying toxic chemicals.
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
#微塑料 #食物链
海洋为什么会出现分层？
Why does the ocean stratify?
海水密度由温度和盐度决定，分层本质是密度分层。太阳加热表层，风浪搅出温度均匀的混合层；其下温度骤降成温跃层、盐度骤变成盐跃层，合称密度跃层。轻上重下，翻动须克服浮力，垂向交换很弱，深层的氧与营养盐难以上返。它并非处处存在：高纬冬季表层水又冷又咸而下沉，对流击穿跃层，深层水由此补充；河口有大量淡水时，分层改由盐度主导。
Seawater density is set by temperature and salinity, so stratification is really density layering. The sun warms the surface and wind stirs a mixed layer of nearly uniform temperature; below it temperature drops sharply as the thermocline and salinity as the halocline, and together these make the pycnocline. With light water over dense water, anything that mixes vertically has to work against buoyancy, so exchange is weak and the oxygen and nutrients of the deep water struggle to return upward. The structure is not the same everywhere: in winter at high latitudes the surface becomes cold and salty and sinks, and convection punches through the thermocline, which is where the deep water is renewed; and where a river mouth delivers a lot of fresh water, salinity takes over as the control on the layering.
难度 进阶 · 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
#海洋 #分层
湾流为什么能让西欧冬天暖和那么多？
Why does the Gulf Stream make winter in Western Europe so much milder?
湾流把加勒比海的暖水沿美国东岸向北输送，途中成为北大西洋暖流，抵达西欧沿岸时仍比同纬度海水暖得多。暖水加热空气，再经偏西风把热量送到大陆，使伦敦、巴黎等地比同纬度的北美东部冬季高约5到10摄氏度。这股暖流是北大西洋表层环流的一部分，输送量约为全世界河流总流量的百倍。
The Gulf Stream carries warm Caribbean water up the US East Coast and, as the North Atlantic Current, still arrives off Western Europe far warmer than the surrounding sea at the same latitude. The warm water heats the air and the prevailing westerlies carry that heat inland, making London and Paris some 5-10 C milder in winter than eastern North America at the same latitude. It is part of the North Atlantic's surface circulation and transports roughly one hundred times the flow of all the world's rivers combined.
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
#湾流 #北大西洋暖流 #洋流
洋流是如何影响沿海地区气候的？
How do ocean currents affect the climate of coastal regions?
暖流（如北大西洋暖流）把低纬热量带向高纬，使沿岸冬季温和；寒流（如秘鲁寒流）降低沿岸气温并常带来干旱与雾。洋流因此重塑全球热量分布与降水格局。
Warm currents such as the North Atlantic Drift carry low-latitude heat toward high latitudes, keeping nearby coasts mild in winter; cold currents such as the Peru Current cool coastal air and often bring aridity and fog. Currents thus reshape the global distribution of heat and precipitation.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
Garrison《海洋学》第9版（Cengage）
Garrison, T., Oceanography: An Invitation to Marine Science (9th ed., Cengage)
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL25631913W：Oceanography an Invita
#暖流 #寒流 #沿岸气候
什么是微塑料？
What are microplastics?
微塑料是小于5毫米的塑料碎片，来自大塑料破碎和日化用品，已遍布海洋、土壤甚至饮用水。
Microplastics are plastic bits smaller than 5 mm, from broken-up waste and cosmetics, now found in oceans, soil and drinking water.
难度 入门 · 适合 小学低段(6-8)
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
#微塑料 #污染
海浪是怎么形成的？
How do ocean waves form?
风把能量传给海面，海水以圆圈方式上下起伏向前传，浪就一波波涌向岸边。
Wind transfers energy to the sea surface, and water moves in rolling circles that travel forward as waves toward the shore.
难度 入门 · 适合 大众
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
#海浪 #风
什么是洋流？
What are ocean currents?
洋流是海洋中大规模定向流动的水体，受风、地球自转和海水密度差驱动，影响气候与渔业。
Ocean currents are large-scale directed water flows driven by wind, Earth's rotation and density differences, affecting climate and fisheries.
难度 入门 · 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
#海洋 #洋流
什么是海平面？
What is sea level?
海平面是海洋的平均高度，随冰川消融、海水增温膨胀而变化。
Sea level is the average ocean height; it rises as ice melts and water warms and expands.
难度 入门 · 适合 大众
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
#海洋 #海平面
为什么海水是咸的？
Why is seawater salty?
河流把陆地岩石中的盐类（如氯化钠）带入海洋，水分蒸发后盐分不断积累，海水就变咸了。
Rivers carry salts like sodium chloride from rocks into the sea; as water evaporates the salts accumulate, making seawater salty.
难度 入门 · 适合 大众
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
#海洋 #盐度
潮汐是由什么引起的？
What causes tides?
月球和太阳对地球的引力使海水周期性涨落，月球影响最大，形成一天两次的潮起潮落。
The Moon and Sun's gravity makes seawater rise and fall periodically; the Moon dominates, giving roughly two tides a day.
难度 入门 · 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
#海洋 #潮汐
海和洋有什么区别？
What is the difference between a sea and an ocean?
洋是广阔连续的主体水域，海是洋的边缘部分，多被大陆或岛屿包围，如地中海是海、太平洋是洋。
An ocean is the vast continuous body of water; a sea is its marginal part often enclosed by land or islands, e.g. the Mediterranean is a sea, the Pacific an ocean.
难度 入门 · 适合 大众
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
#海洋 #海与洋
深海为什么那么黑？
Why is the deep sea so dark?
阳光只能穿透海面上百米，再往下光线几乎全被水吸收，深海便常年漆黑一片。
Sunlight only penetrates the top hundred meters or so; deeper down it is absorbed, leaving the deep sea perpetually dark.
难度 入门 · 适合 小学低段(6-8)
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
#海洋 #深海
海山是什么？
What is a seamount?
海山是海底隆起、顶部不到海面的死火山，常由板块经过热点时喷发堆积而成，是海洋生物聚集地。
A seamount is a submarine volcano whose top stays below the surface, often built over a hotspot, and a hotspot for marine life.
难度 入门 · 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
#海山 #海底火山
死海为什么能让人浮起来？
Why can people float in the Dead Sea?
死海盐度极高，湖水比普通海水重很多，浮力大，人躺在水面很难沉下去。
The Dead Sea is extremely salty and dense, so its buoyancy keeps people afloat easily.
难度 入门 · 适合 大众
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
#海洋 #死海
海水的盐度大约是多少？
About how salty is seawater?
开阔大洋海水的平均盐度约为千分之35，也就是约3.5%的溶解盐分，以氯化钠为主。不同海域因蒸发、降水和径流差异，盐度会有所不同。
Open ocean seawater averages about 35 parts per thousand, roughly 3.5% dissolved salts, mostly sodium chloride. Salinity varies by region because of differences in evaporation, rainfall, and river input.
难度 入门 · 适合 小学低段(6-8)
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
#盐度 #海水 #氯化钠