volcanoes

火山的英语是什么

volcanos和volcanoes区别：没有区别。

volcanos　

英 [vɒl'keɪnəʊ] 　 　 美 [vɑːl'keɪnoʊ] 　 　

n. 火山。

名词复数: volcanoes。

volcanoes

英 [vɒlˈkeɪnəʊz]   美 [vɑlˈkeɪnoʊz]。

n.火山。

volcano的复数。

造句：

The chain of volcanoes is known, appropriately enough, as the 'Ring of Fire'.。

人们把这链状火山群很恰当地称作“火环”。

That volcano cast forth lots of lava and ashes.。

那火山喷了出大量熔岩和灰烬。

The erupting volcano was an awe-inspiring sight.。

火山爆发是使人畏惧的景象。

火山单词的英文火山 用英文怎么说

volcano

n.

(pl.volcanos, volcanoes)火山。

dance on a volcano。

在火山上跳舞, 大难将至犹自取乐。

sit on a volcano。

坐在火山顶上, 处境危险

active volcano

活火山

air volcano

气火山

composite volcano。

复式火山

compound volcano。

复合火山

dormant volcano。

休眠火山

extinct volcano。

死火山

lava volcano

熔岩火山

mud volcano

泥火山

oceanic volcano。

海底火山

periodic volcano。

周期性火山

pumice volcano

爆裂火山

shield volcano

盾状火山

submarine volcano。

海底火山

关于火山的英语文章（高二）

volcano

英 [vɒl'keɪnəʊ]

美 [vɑl'keno]

n. 火山

复数 volcanoes或volcanos。

休眠火山，活火山，死火山应该怎么说

VolcanoA volcano is generally a conical-shaped hill or mountain built by accumulations of lava flows, tephra, and volcanic ash. About 95% of active volcanoes occur at the plate subduction zones and at the mid-oceanic ridges .The other 5% occur in areas associated with lithospheric hot spots. These hot spots have no direct relationships with areas of crustal creation or subduction zones. It is believed that hot spots are caused by plumes of rising magma that have their origin within the asthenosphere. Over the last 2 million years,volcanoes have been depositing lava, tephra, and ash in particular areas of the globe .These areas occur at hot spots, rift zones, and along plate boundaries where tectonic subduction is taking place. Not all volcanoes are the same. Geologists have classified five different types of volcanoes. This classification is based on the geomorphic form, magma chemistry, and the explosiveness of the eruption. The least explosive type of volcano is called a basalt plateau. These volcanoes produce a very fluid basaltic magma with horizontal flows. The form of these volcanoes is flat to gently sloping and they can occupy an area from 100,000 to 1,000,000 square kilometers. Deposits of these volcanoes can be as thick as 1,800 meters. Large basalt plateaus are found in the Columbia River Plateau, western India, northern Australia, Iceland, Brazil, Argentina, and Antarctica. Some basaltic magmas can produce very large slightly sloping volcanoes, 6 to 12°, that have gently flowing magmas called shield volcanoes. Shield volcanoes can be up to 9,000 meters tall. The volcanoes of the Hawaiian Islands are typical of this type. Extruded materials from this type of volcano mainly consist of low-viscosity basaltic lava flows .A cinder cone is a small volcano, between 100 and 400 meters tall, made up of exploded rock blasted out of a central vent at a high velocity . These volcanoes develop from magma of basaltic to intermediate composition . They form when large amounts of gas accumulate within rising magma. Examples of cinder cones include Little Lake Volcano in California and Paricutin Volcano in Mexico. Composite volcanoes are made from alternate layers of lava flows and exploded rock. Their height ranges from 100 to 3,500 meters tall. The chemistry of the magma of these volcanoes is quite variable ranging from basalt to granite. Magmas that are more granitic tend to be very explosive because of their relatively higher water content. Water at high temperatures and pressures is extremely volatile. Examples of composite volcanoes include Italy's Vesuvius, Japan's Mount Fuji, and Washington State's Mount Rainier and Mount St. Helens . The most explosive type of volcano is the caldera. The cataclysmic explosion of these volcanoes leaves a huge circular depression at the Earth's surface. This depression is usually less than 40 kilometers in diameter. These volcanoes form when "wet" granitic magma quickly rises to the surface of the Earth. When it gets to within a few kilometers of the surface the top of the magma cools to form a dome. Beneath this dome the gaseous water in the magma creates extreme pressures because of expansion. When the pressure becomes too great the dome and magma are sent into the Earth's atmosphere in a tremendous explosion. On the island of Krakatau, a caldera-type volcano exploded in 1883 ejecting 75 cubic kilometers of material in the air and left a depression in the ground some 7 kilometers in diameter. A potentially very destructive caldera covering an area of about 2,000 square kilometers exists under Yellowstone National Park in the United States .Investigations have discovered that over the last 2 million years this volcano has exploded on a regular interval of about 700,000 years. The last eruption occurred 630,000 years ago and the next could take place anytime. When the Yellowstone caldera last erupted, it blasted 1,000 cubic kilometers of volcanic ash and rock into the atmosphere. The ash ejected into the atmosphere created climatic havoc on a global scale. The ash would have blocked sunlight from being received at the ground surface for a few years. A reduction in the reception of solar radiation would have caused the globle climate to cool significantly. Over time this ash settled back to the Earth's surface covering more than half of North America.。

急求一篇“火山爆发”的英语说明文，谢谢！

火山一般的分类可以分为：

1.活火山（Active volcanoes）:现在仍在不时活动 。

2.休眠火山（Dormant volcanoes):现在已停止活动,但是缺少侵蚀变化 。

3.死火山（Extinct volcanoes）在人类历史上完全没有活动记录,也没有活动迹象 。

不过休眠火山可以觉醒，死火山也可以复活，故如仅靠过去的记录来区分它，未必十分正确。

一般说来，火山活动分成三个阶段，当然有时不一定按顺序发生，现在我们一起来看看这三个阶段：

1. 活火山

指火山正在喷发或刚刚喷发过。活火山的表现各有不同，有的喷发起来很剧烈，有的喷发起来慢悠悠的。不过，别紧张，台湾最年轻的活火山──龟山岛火山，最近一次活动是距今约7,000年前，而喷发量最大，范围最广的大屯火山群也已在20万年以前就停止活动了。

2. 休眠火山

休眠就是睡觉的意思。有些火山现在没有喷发，但很可能将来有一天会喷发，所以这类的火山还是很危险的。休眠火山可能会连续睡上几周、几个月甚至几个世纪，然後突然喷发。大体而言，火山打盹的时间越长，爆发起来的声响就越大。

3. 死火山

如果火山不再喷发，而且不再有可能喷发，我们就说这座火山进入了熄灭期，变成死火山了。也许你以为这样的火山就没有危险了，其实不然，虽然火山已经死了，但还是可能有危险。例如位在南大西洋的崔斯坦火山岛（Tristan da Cunha），就是一个已经熄灭很多年的火山岛。但是，1961年10月的某一天，崔斯坦火山岛突然喷发起来，岛上280名居民赶紧乘上小船逃命，这一逃就是两年，两年之後居民们才敢返回家园。

原文地址：http://www.qianchusai.com/volcanoes.html