What are the different states of existence of water on Earth?

There are two forms of the state of existence of water, namely free water and bound water. However, this division has only a relative significance.

Solids, liquids, gases, ionized at high temperatures.

And some are in hydrates.

<> there are several reasons for the existence of liquid water on Earth:

1. The cycle of the earth's alternation of day and night is moderate, so that the heating of the surface during the day and the cooling range at night will not be too large, if the temperature is too high, the water will boil, and if the temperature is too low, the water will thaw. The surface temperature does not change much, and Sohui does not boil or thaw, so there is liquid water.

2. The sun and the earth are far away from the trip.

Moderate, so that the average surface temperature will not be too high to boil or too low to cause freezing, in line with the conditions for the existence of liquid water.

Water exists in nature in three forms: solid, liquid, and gaseous. The specific manifestations are solid states including ice, snow, frost, and hail; Liquid states include clouds, rain, fog, and dew; The gaseous state is mainly water vapor.

1.Snow Solid The temperature in the cloud is too low, and the small water droplets in the cloud form ice crystals, and the snowflakes that fall to the ground are still snowflakes.

2.Frost solid water droplets in the air solidify into crystals like crushed ice when condensed.

3.Ice Solid When the temperature of the water drops below 0, it will condense into solid ice.

4.Clouds Liquid Water vapor condenses into small water droplets floating in the sky when they reach high altitudes, and these small water droplets are clouds.

5.Rain liquid most of the small water droplets floating in the air merge into large water droplets and finally fall to the ground and become rain.

3.Dew liquid water vapor in the air condenses into small droplets that adhere to the object.

7.Fog liquid water vapor in the air condenses into small water droplets, which are formed close to the ground called fog.

8.Water vapor Gaseous Water evaporates when heated to form gaseous water vapor, which is water vapor that cannot be seen with the naked eye.

<> can be electrolyzed to oxygen and hydrogen.

There are on the surface of the Earth's landSurface water and groundwaterTwo types of water bodies.

Water bodies can be partitioned by type or by region. When it is divided according to type, it can be divided into marine water body and land water body; Terrestrial water bodies can be further divided into surface water bodies (surface water bodies) and underground water bodies.

Surface water includes oceans, lakes, rivers, reservoirs, swamps, ice fields, and glaciers. Groundwater is divided into submersible and confined water. A water body divided by region refers to a specific area covered by water.

Ocean water. The water bodies on earth include ocean water, terrestrial water, and atmospheric water, of which ocean water is the most important and accounts for the world's water reserves.

Water is an inorganic substance composed of hydrogen and oxygen, which is non-toxic and drinkable. It is a colorless and odorless transparent liquid at room temperature and pressure, which is known as the source of human life and an important substance to maintain life.

Water is one of the most commonly known substances on Earth, covering about 71% of the Earth's surface. It is an important resource for the survival of all life, including inorganic old space and human beings, and it is also the most important component of living organisms. Although it is present in small quantities in air, it is an important component of air.

The distribution of water on Earth.

Water body category Volume (10,000 cubic kilometers) Accounts for the total

OCEAN 132000 9702

Rivers and freshwater moorings.

Salt lakes and inland seas.

Soil water, shallow groundwater.

Deep groundwater.

Icecap & Glacier 2920

Atmospheric water in the body of aquatic organisms.

The total amount is about 136000 100

Water resources.

The total amount of water on the earth is about 1.4 billion cubic kilometers, of which fresh water accounts for only the total water, and it is mainly distributed in the ice and snow of the north and south poles. At present, only the underground desalient level, lake freshwater and riverbed water can be directly used by human beings, and the sum of the three accounts for about the total amount of water on the earth. China's total water resources are about 2,812.4 billion cubic meters, of which groundwater is about 870 billion cubic meters.

The water resources are about 2,700 cubic meters, which is 25% of the world's per capita share, ranking 88th in the world. China's fresh water accounts for 8% of the world's freshwater, and its per capita share is 30% of the world's per capita shareFor example, the north of the Yangtze River, which accounts for more than half of the country's land area and accounts for 64% of the country's cultivated area, only accounts for 18% of the country's water resources, especially Huawei ridge renting north, and the per capita is less than 1 6

Water on Earth is formed by the release of water from rocks.

The autologous theory holds that when the earth originated, magma deep underground contained abundant water, and under the right conditions, the water in these rocks would be released. In the first few hundred million years after the formation of the earth, due to the thin crust and the continuous bombardment of the earth's surface by small celestial bodies, molten magma in the mantle was prone to upwelling and erupting, so the earth at that time was full of fire.

The magma is accompanied by a large amount of water vapor and carbon dioxide, which rises into the air and envelops the earth. Water vapor forms clouds, which produce rainfall. After a long period of rainfall, in the low-lying areas of the original crust, water continues to accumulate, forming the most primitive ocean.

The water of the pristine sea was only slightly salty, and only later did the salinity gradually increase. It was through the gradual increase in water volume and salinity, as well as the vicissitudes of geological history, that the pristine ocean gradually formed the ocean of today.

How to get water:

The first place to find groundwater sources is in the bed areas of streams and rivers that have long since dried up. Although the surface of these places has long been devoid of water, abundant groundwater can often be found beneath their surface.

Solar distillation water intake method is especially suitable for desert areas, dig a pit with a length and width of about 90 cm and a depth of 45 cm on the ground, put a kettle at the bottom of the pit, put a plastic film on the pit, fix the film around the edge of the pit with stones or sand, and then hang a stone in the first part of the plastic film to ensure that the plastic film is arc-shaped, so that the water droplets can smoothly slide to the bottom and fall into the collector. The sun's exposure raises the temperature of the moist soil and air in the pit, and evaporation produces water vapor.