Evaluation of water composition

Water consists of hydrogen atoms and oxygen atoms.

Definition of water

Water is an important resource of all life, including inorganic compounds and human beings, and it is also the most important component of organisms. Water is one of the most common substances on the earth, and 72% of the earth's surface is covered with water. Although there is little water in the air, it is an important part of the air.

Pure water has very weak conductivity and belongs to very weak electrolyte. Water in daily life has obvious conductivity because it dissolves other electrolytes and has more anions and cations.

The source of water

There are great differences in academic circles about the origin of water on the earth, and there are dozens of different theories of water formation at present. Some people think that in the early days of the earth's formation, hydrogen in the primitive atmosphere was oxidized into water, and water vapor gradually condensed to form the ocean; There is also a view that water originally existed in the nebula material that formed the earth.

Another view is that silicate and other substances in the original crust react under the influence of volcanoes and precipitate water. There are also views that comets and meteorites attracted by the earth are the main sources of water on the earth, and even the water on the earth is still increasing.

Water intake method

Groundwater intake

The first choice for finding underground water sources is the riverbed area of streams and rivers whose surface has already dried up. Although the surface of these places has long been dry, abundant groundwater can often be found under their surface.

Sunshine distilled water

Solar distillation water intake method is especially suitable for desert areas. Dig a pit about 90cm long and 45cm deep underground, put a kettle in the center of the pit bottom, cover the pit with a layer of plastic film, fix the periphery of the film on the edge of the pit with stone or sand, and then hang a stone in the center of the plastic film to ensure that the plastic film is arc-shaped, so that water droplets can smoothly slide to the bottom of the center and fall into the collector.

Absorb water from plants

Collect water by condensing the water vapor of plants, and put a plastic bag on the solid branches of dense trees. When placing the bag, the bag mouth is upward and the bag angle is downward, so as to receive the condensed water generated by transpiration of the leaves.

Because the water vapor generated by transpiration rises and condenses into water droplets when it contacts the membrane, the condensed water droplets will flow into the bottom collector along the inner wall of the membrane.