1.求一篇名为“The water cycle”的英语作文,不要太长80词左右,简单

which leads to temperature changes. For instance, in the process of evaporation, water takes up energy from the surroundings and cools the environment. The water cycle figures significantly in the maintenance of life and ecosystems on Earth. By transferring water from one reservoir to another, the water cycle purifies water, replenishes the land with freshwater, and transports minerals to different parts of the globeThe water cycle describes the continuous movement of water on, above and below the surface of the Earth. The water cycle also involves the exchange of heat energy。

2.water cycle?

[编辑本段]1.定义

定义1：水循环是指水由地球不同的地方透过吸收太阳带来的能量转变存在的模式到地球另一些地方，例如：地面的水份被太阳蒸发成为空气中的水蒸汽。而水在地球的存在模式包括有固态、液态和气态。而地球的水多数存在于大气层中、地面、地底、湖泊、河流及海洋中。水会透过一些物理作用，例如：蒸发、降水、渗透、表面的流动和表底下流动等，由一个地方移动至另一个地方。如水由河川流动至海洋。

定义2 ：在太阳能和地球表面热能的作用下，地球上的水不断被蒸发成为水蒸气，进入大气。水蒸气遇冷又凝聚成水，在重力的作用下，以降水的形式落到地面，这个周而复始的过程，称为水循环。

定义3 ：水循环是指大自然的水通过蒸发，植物蒸腾，水汽输送，降水，地表径流，下渗，地下径流等环节，在水圈，大气圈，岩石圈，生物圈中进行连续运动的过程。

2.主要作用

水是一切生命机体的组成物质，也是生命代谢活动所必需的物质，又是人类进行生产活动的重要资源。 地球上的水分布在海洋、湖泊、沼泽、河流、冰川、雪山，以及大气、生物体、土壤和地层。水的总量约为1.4*1013 m3，其中97%在海洋中，约覆盖地球总面积的70%。陆地上、大气和生物体中的水只占很少一部分。

水循环的主要作用表现在三个方面：

① 水是所有营养物质的介质，营养物质的循环和水循化不可分割地联系在一起；

② 水对物质是很好的溶剂，在生态系统中起着能量传递和利用的作用；

③ 水是地质变化的动因之一，一个地方矿质元素的流失，而另一个地方矿质元素的沉积往往要通过水循环来完成。

地球上的水圈是一个永不停息的动态系统。在太阳辐射和地球引力的推动下，水在水圈内各组成部分之间不停的运动着，构成全球范围的大循环，并把各种水体连接起来，使得各种水体能够长期存在。海洋和陆地之间的水交换是这个循环的主线，意义最重大。在太阳能的作用下，海洋表面的水蒸发到大气中形成水汽，水汽随大气环流运动，一部分进入陆地上空，在一定条件下形成雨雪等降水；大气降水到达地面后转化为地下水、土壤水和地表径流，地下径流和地表径流最终又回到海洋，由此形成淡水的动态循环。这部分水容易被人类社会所利用，具有经济价值，正是我们所说的水资源。

水循环是联系的球各圈和各种水体的“纽带”，是“调节器”，它调节了的球各圈层之间的能量，对冷暖气候变化起到了重要的因素。水循环是“雕塑家”，它通过侵蚀，搬运和堆积，塑造了丰富多彩的地表形象。水循环是“传输带”，它是地表物质迁移的强大动力，和主要载体。更重要的是，通过水循环，海洋不断向陆地输送淡水，补充和更新新陆地上的淡水资源，从而使水成为了可再生的资源。

3.用英语简单描述水的循环过程

Water circulation refers to the water by the earth in different places through absorption of solar energy transformation mode of existence brought to earth in other places, such as: ground water evaporated by the sun as water vapor in the air. Definition 2 in solar and earth surface under the action of heat energy, the water on the earth has been evaporated into vapor, into the atmosphere. Steam cooled and condensed into water, under the action of gravity, with precipitation in the form of fall to the ground to go round and begin again, this process, called the water cycle. Definition 3 water circulation refers to the nature of water through evaporation, transpiration, water vapor transport, precipitation, runoff, infiltration, runoff and underground links, in the hydrosphere, atmosphere, lithosphere, biosphere in the course of continuous movement。

4.水是怎样循环的,用英文写一个小短文

The water cycle, also known as the hydrologic cycle. It is the continuous movement of water on, above and below the surface of the Earth. Water can transform into various stage of Ice, rain, vapor in the process. The water movement is done by the physical processes of evaporation, condensation, precipitation, infiltration, runoff, and subsurface flow. In so doing, the water goes through different phases: liquid, solid, and gas.

The water cycle figures significantly in the maintenance of life and ecosystems on Earth. The water cycle brings added significance to the presence of water on our planet. By transferring water from one reservoir to another, the water cycle purifies water, replenishes the land with freshwater, and transports minerals to different parts of the globe. In addition, as the water cycle involves heat exchange, it exerts an influence on climate as well.

5.水的循环 英语作文 5.6句就可以 短点 六年级的

water exists in three different states, solid, liquid and gas, the solid water is ice, liquid is the normal state, vapor is the water in gas.water always transfers in these states , vapor comes from ice or water, when it meets coldness, it forms little drop of water, with air's convection, it turns into rain or hail, falls down to the ground. permeates the soil, some will stay and be absorbed by plants, be transferred to vapor from leaves,some will flow to the river, finally to the sea, expose to the sunlight, turn into vapor.this is the simple circulation that water chages states between solid ,liquid and gas.。

6.关于”水”的英文资料或英语短文

Earth\'s water is always in movement, and the water cycle, also known as the hydrologic cycle, describes the continuous movement of water on, above, and below the surface of the Earth. Since the water cycle is truly a \"cycle,\" there is no beginning or end. Water can change states among liquid, vapor, and ice at various places in the water cycle, with these processes happening in the blink of an eye and over millions of years.

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7.六年级关于水循环的过程的英语作文

The natural water cycle is a multi-part process, the global water cycle involves evaporation, atmospheric moisture transport, surface water and groundwater circulation and storage of water storage in various forms. 降水、蒸发和径流是水循环过程的三个最主要环节，这三者构成的水循环途径决定着全球的水量平衡，也决定着一个地区的水资源总量。

Precipitation, evaporation and runoff are the three most important aspects of the water cycle, water cycle consisting of these three ways to determine the global water balance, but also determines the total water resources of an area. 蒸发是水循环中最重要的环节之一。 Evaporation is the water cycle in one of the most important aspects. 由蒸发产生的水汽进入大气并随大气活动而运动。

Generated by the evaporation of water vapor into the atmosphere and with the atmospheric activity and exercise. 大气中的水汽主要来自海洋，一部分还来自大陆表面的蒸散发。 Water vapor in the atmosphere mainly from the oceans, but also from the mainland part of the surface evapotranspiration. 大气层中水汽的循环是蒸发-凝结-降水-蒸发的周而复始的过程。

The cycle of water vapor in the atmosphere is evaporation - condensation - precipitation - evaporation cycle process. 海洋上空的水汽可被输送到陆地上空凝结降水，称为外来水汽降水；大陆上空的水汽直接凝结降水，称内部水汽降水。 Water vapor over the oceans can be transported to the condensation of precipitation over land, known as external water vapor precipitation; direct condensation of water vapor over the continent of precipitation, water vapor within said precipitation. 一地总降水量与外来水汽降水量的比值称该地的水分循环系数。

An external water vapor to the total precipitation and the ratio of precipitation to the water cycle called the coefficient. 全球的大气水分交换的周期为10天。 Global atmospheric water exchange cycle is 10 days. 在水循环中水汽输送是最活跃的环节之一。

Water vapor transport in the water cycle is one of the most active part. 径流是一个地区（流域）的降水量与蒸发量的差值。 Runoff is a regional (basin) and the difference between precipitation and evaporation. 多年平均的大洋水量平衡方程为：蒸发量=降水量+径流量；多年平均的陆地水量平衡方程是：降水量=径流量+蒸发量。

The average years of ocean water balance equation: evaporation = precipitation + runoff; annual average water balance equation is the land: precipitation = runoff + evaporation. 但是，无论是海洋还是陆地，降水量和蒸发量的地理分布都是不均匀的，这种差异最明显的就是不同纬度的差异。 However, both sea and land, precipitation and evaporation are the uneven geographical distribution, this difference is most obvious differences between different latitudes. 中国的大气水分循环路径有太平洋、印度洋、南海、鄂霍茨克海及内陆等5个水分循环系统。

China's atmospheric water cycle path to the Pacific, Indian Ocean, South China Sea, Okhotsk Sea and inland water circulation system, etc. 5. 它们是中国东南、误南、华南、东北及西北内陆的水汽来源。 They are China's southeast, misuse South, South, Northeast and Northwest inland water vapor source. 西北内陆地区还有盛行西风和气旋东移而来的少量大西洋水汽。

Northwest prevailing westerly winds and inland areas as well a small number of Atlantic cyclones eastward from water vapor. 陆地上（或一个流域内）发生的水循环是降水-地表和地下径流-蒸发的复杂过程。 Land (or a watershed) occurred in the water cycle is precipitation - runoff of surface and underground - the complex process of evaporation. 陆地上的大气降水、地表径流及地下径流之间的交换又称三水转化。

Land-based atmospheric precipitation, surface runoff and underground runoff, also known as the exchange between the Sanshui transformation. 流域径流是陆地水循环中最重要的现象之一。 Runoff is the water cycle is one of the most important phenomena. 地下水的运动主要与分子力、热力、重力及空隙性质有关，其运动是多维的。

The movement of groundwater mainly molecular force, heat, gravity and nature of the gap, the movement is multidimensional. 通过土壤和植被的蒸发、蒸腾向上运动成为大气水分；通过入渗向下运动可补给地下水；通过水平方向运动又可成为河湖水的一部分。 Soil and vegetation by evaporation and transpiration of water upward into the atmosphere; can recharge by downward movement of ground water infiltration; horizontal direction through the river water can also become a part of. 地下水储量虽然很大，但却是经过长年累月甚至上千年蓄集而成的，水量交换周期很长，循环极其缓慢。

Groundwater reserves, while significant, but it is the result of long years and even thousands build。