自然水循环

Water is constantly moving around\r\n

Did you know that all the water on Earth is all that we have? It's constantly moving around in a natural cycle. Some water is easy to see in our rivers and oceans, but some water is underground or in the atmosphere.

\r\n"}}" id="text-e8c2d8f53d" class="cmp-text">

水一直在四处移动

您知道地球上的所有水都是我们所拥有的吗?它在自然周期中不断地走动。在我们的河流和海洋中很容易看到一些水,但是有些水在地下或大气中。


Natural water cycle processes\r\n

The natural water cycle is the continuous movement of water around the world through the processes of evaporationtranspirationcondensation, precipitation, run-off, infiltration and percolation.

\r\n"}}" id="T1" class="cmp-text">

自然水循环过程

自然的水周期是世界各地的水的连续移动蒸发,,,,蒸腾,,,,缩合,,,,沉淀,,,,径流,,,,浸润渗滤

What happens in the natural water cycle?\r\n

The natural water cycle uses physical processes to continually move water from the surface of the Earth to the atmosphere and back again. This cycle is also called the hydrological cycle.

\r\n
    \r\n
  • Evaporation is when the sun shines on water and heats it, turning it into gas called water vapour which rises into the air.
  • \r\n
  • Transpiration is when the sun warms people, plants and animals and they release water vapour into the air.
  • \r\n
  • Condensation is when the water vapour in the air cools and turns back into a liquid, forming tiny water droplets in the sky.
  • \r\n
  • Precipitation is when water droplets fall from the sky as rain, snow or hail.
  • \r\n
  • Run-off is when water flows over the ground and into creeks, rivers and oceans.
  • \r\n
  • Infiltration is when water falls on the ground and soaks into the soil.
  • \r\n
  • Percolation is when water seeps deeper into tiny spaces in the soil and rock.
  • \r\n
\r\n

We modify and manage part of the natural water cycle to provide humans with water. This is called the urban water cycle.

\r\n"}}" id="text-8ed37a6d2f" class="cmp-text">

自然水周期会发生什么?

自然的水周期使用物理过程将水从地面不断地移动到气氛再回来。这个周期也称为水文周期

  • 蒸发是当太阳在水上发光并加热时,将其变成称为水蒸气的气体,从而升入空气。
  • 蒸腾是阳光温暖的人,植物和动物,然后将水蒸气释放到空中。
  • 凝结是当空气中的水蒸气冷却并变成液体时,形成天空中的微小水滴。
  • 降水是当水滴从天空中掉下来,因为雨,雪或冰雹。
  • 径流是水流在地面上并进入小溪,河流和海洋的时候。
  • 渗透是当水落在地面上并浸入土壤时。
  • 渗滤是当水渗入土壤和岩石中的微小空间时。

我们修改并管理一部分自然水循环,为人类提供水。这称为城市水周期。


Properties of water\r\n"}}" id="T2" class="cmp-text">

水的特性

Did you know?
\r\n\r\n
    \r\n
  • Water is the most common substance found on Earth. It's the only substance found naturally in 3 forms – solid (as ice), liquid (as water) and gas (as water vapour).
    \r\n
  • \r\n
  • Water is made up of tiny molecules. One water molecule, called H2O, is made up of 3 atoms – 2 hydrogen atoms and an oxygen atom. These atoms stick together due to electrical energy.
    \r\n
  • \r\n
  • Water is a solvent, which means it dissolves things. Wherever it travels, water carries chemicalsminerals  and nutrients with it. This means water is more than what we can see.
    \r\n
  • \r\n
  • Water can be tested to see if it is acidic, basic or neutral. We like our water around neutral so it doesn't corrode pipes and home appliances.
  • \r\n
\r\n"}}" id="text-2a3c30c8c1" class="cmp-text">

你可知道?

  • 水是地球上最常见的物质。这是唯一以3种形式发现的物质 - 固体(冰),液体(如水)和气体(作为水蒸气)。
  • 水是小小的分子。一个水分子,称为H2o,由3组成原子- 2个氢原子和一个氧原子。这些原子由于电能而粘在一起。
  • 水是溶剂,这意味着它可以溶解物品。无论旅行到哪里,水都有化学物质,,,,矿物质营养用它。这意味着水比我们看到的要多。
  • 可以测试水以查看它是酸性的,碱性的还是中性的。我们喜欢中性周围的水,因此不会腐蚀管道和家用电器。

Water on Earth\r\n

Did you know?

\r\n
    \r\n
  • Earth has exactly the same amount of water as it had thousands of years ago. 
  • \r\n
  • The total amount of water on Earth is 1,386 million cubic kilometres.
  • \r\n
  • Water covers about three quarters of the Earth’s surface.
  • \r\n
  • 96% of the world’s water is saltwater.
  • \r\n
  • 3% is of the world’s water is freshwater, but most of it is frozen or not easy to get.
  • \r\n
  • Less than 1% of the world’s fresh water is useable.
  • \r\n
\r\n"}}" id="T3" class="cmp-text">

地球上的水

你可知道?

  • 地球的水与数千年前完全相同。
  • 地球上的总水量为13.86亿立方公里。
  • 水覆盖了地球表面的四分之三。
  • 世界96%的水是盐水。
  • 3%是世界上的水是淡水,但大部分是冷冻或不容易获得的。
  • 不到1%的世界淡水可用。

Water cycle experiments\r\n

Have you ever wondered how water evaporates? Where clouds come from or where water goes after it rains? It’s all part of the water cycle.

\r\n

Try these science experiments and see for yourself.

\r\n\r\n"}}" id="T4" class="cmp-text">

水循环实验

您是否曾经想过水如何蒸发?云来自何处或下雨后的水?这都是水上周期的一部分。

尝试这些科学实验,亲自看看。


Atmosphere\r\n

Gases that surround a planet, like the air that surrounds Earth.

\r\n"}}" id="text-7ebe92f2b5" class="cmp-text">
气氛

围绕地球的气体,例如围绕地球的空气。

Hydrological cycle\r\n

The cycle of water between the Earth and the atmosphere powered by the Sun. Also called the water cycle.

\r\n"}}" id="text-8eebb1faa6" class="cmp-text">
水文周期

地球与太阳驱动的大气之间的水周期。也称为水周期。

Urban water cycle\r\n

The urban water cycle is the way water is collected, used and managed in an urban environment such as Sydney.

\r\n"}}" id="text-288ecbf1eb" class="cmp-text">
城市水周期

城市水周期是在悉尼等城市环境中收集,使用和管理水的方式。

Molecules\r\n

A group of at least 2 atoms held together by strong chemical bonds.

\r\n"}}" id="text-15e0e63184" class="cmp-text">
分子

一组至少2个原子由强牢固的化学键固定在一起。

Atoms\n

A basic unit of matter consisting of a central nucleus surrounded by negatively charged electrons.

\n"}}" id="text-38f1277490" class="cmp-text">
原子

一个基本的物质单位,该物质由中央核组成,被带负电的电子包围。

Chemicals\n

A substance made up of specific elements.

\n"}}" id="text-9653c154c2" class="cmp-text">
化学物质

由特定元素组成的物质。

Minerals\n

A solid substance formed through geological processes that has a specific chemical composition, structure, and physical property.

\n"}}" id="text-983d350106" class="cmp-text">
矿物质

通过具有特定化学成分,结构和物理特性的地质过程形成的固体物质。

Nutrients\n

A substance that provides nourishment, food or energy.

\n"}}" id="text-e286c4b255" class="cmp-text">
营养

提供营养,食物或能量的物质。


Baidu
map