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Category: In Nature

Close to the Desert, Close to the Nature(III)

The source of water

Occasionally it rains in the desert, and there is often a storm. The Sahara Desert had a record of 44 mm of precipitation within 3 hours. At this time, the normally dry river will be filled with water quickly and it is easy to flood. Although there is less rain inside the desert, the desert often enters the river from the nearby mountains. These rivers usually carry a lot of soil, and they have been working in the desert for a day or two. If there is enough water, a seasonal lake will form in the desert, which is generally shallower and salty. Because the bottom of the lake is very flat, the wind will blow the lake to dozens of square kilometers. After the small lake has dried up, it will leave a salt flat. There are hundreds of such salt flats in the United States, mostly are the relics during the Ice Age 12,000 years ago, the most famous of which is the Great Salt Lake in Utah.


Some minerals form in the dry religions. The water on the ground dissolves the minerals and then concentrates it near the surface of the groundwater, making it an easy-to-develop reservoir. There are many minerals on the salt flats that remain on the surface after evaporation. The world’s largest oil reserves are mostly in the desert, but these storages are not due to the dry climate. Before these areas became deserts, they were shallow seas, and oil was formed by submarine plants.

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Natural Phenomena- Aurora

For many centuries, aurora has been the mystery of the sky that people guess and explore. Once upon a time, the Eskimos thought it was the torch that the ghosts and gods guided the souls to heaven. In the 13th century, people thought it was the light reflected by the Greenland Ice Sheet. In the 17th century, it was called the Northern Lights – the Arctic dawn (the same light seen in the Antarctic is called the South Pole).

With the advancement of technology, the mystery of Aurora is becoming more and more known to us. Originally, this beautiful scenery is a work performed by the Sun and the atmosphere. Among the energies created by the sun, such as light and heat, one type of energy is called the “solar wind.” The solar wind is a charged particle ejected by the sun. It is a powerful charged subatomic particle stream that covers the earth and is in a plasma state. The solar wind travels around above the earth, striking the Earth’s magnetic field at a speed of about 400 kilometers per second. The earth’s magnetic field is shaped like a funnel, and the tip is facing the north and south magnetic poles of the earth, so the charged particles from the sun along the earth’s magnetic field settles and enters the polar regions of the earth. The high-level atmosphere of the two poles will shine when they are bombarded by the solar wind, forming an aurora. The Antarctic light formed in the Antarctic region and the Northern Lights formed in the Arctic region.

Aurora is a process of large-scale discharge around the Earth. The charged particles from the sun reach the Earth, and the Earth’s magnetic field forces part of it to concentrate along the field line to the north and south poles. When they enter the upper atmosphere of the polar earth, they collide with the atoms and molecules in the atmosphere and excite, generating light and forming an aurora. Frequently, in two ring-shaped zones around 67 degrees north-south latitude, Fairbanks in Alaska has more than 200 days of aurora in a year, so it is called the “Northern Lights Capital.” So the aurora can only be seen in the north and south poles of the earth. When the solar wind is strong, there is a lot of energy that can’t be consumed, so the aurora is formed at the ionosphere.

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How to Protect the Ecological Environment

  • Air conditioning

The air conditioning temperature in winter is should be 18 degrees or less. If you feel cold, you can add more clothes, such a simple measure can save electricity, thereby reducing greenhouse gases such as carbon dioxide emitted by coal-fired power generation and slowing down climate warming.

The air conditioning temperature in summer is should be 26 degrees or more. Air-conditioning load in large cities accounts for 40%-50% of the maximum power load in midsummer, and increases the temperature of air conditioners from 22-24℃to 26-28℃.It is good for people to sweat in the summer, which can enhance metabolism, regulate endocrine function and promote autoimmunity.

(2) The bulb should be replaced by an energy-saving lamp.

The ordinary light bulb in the home should be replaced by an energy-saving light bulb, and the product has passed the “national energy-saving product certification” can be judged by whether or not the “section” word is printed. Under the same luminous flux conditions, energy-saving lamps can save 80% of energy compared with incandescent lamps. The cost of purchasing energy-saving lamps can be recovered in the (8-10) months of electricity savings.

(3) Garbage classification should be recycled replace littered

About 50% of the waste is biological organic matter, and about 30%-40% has recyclable value. In 2000, China produced six recyclable wastes: 41.5 to 43 million tons of scrap steel, 100 to 1.2 million tons of waste non-ferrous metals, 85 to 920,000 tons of waste rubber, and 2.3 to 2.5 million tons of waste plastics. 10.4 million tons of glass and 1,000 to 15 million tons of waste paper. Up to now, the value of waste that can be utilized and not used in China has reached 25 billion yuan, and about 3 million tons of scrap steel and 6 million tons of waste paper have not been recycled.

(4)Do not use electrical power to cut off the power supply., we can save 10% electricity.

Turn off the power when not in use, such as TVs or computers in homes and offices. In standby mode, the TV consumes an average of 8.07 joules per hour, 3.47 joules for air conditioning, 7.69 joules for displays, 35.07 joules for PCs, and 6.06 joules for range hoods. Turning off the power supply can help you save money and protect the environment.

Energy conservation, environmental protection, begin from myself. Let us together diligently.

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Nature Wonders of the World(Ⅲ)

  1. Moeraki Boulders

Many boulders are scattered on the beaches on the east coast of New Zealand’s South Island, with some round stones reaching 12 feet (about 3.6 meters). They formed on the seabed millions of years ago and were gathered and hardened by sediments and minerals that surround a fossil or shell core. The Moraic Boulders are not the only example of what geologists call “cracks”. They can also visit the round stones in the Hekiunga Bay on the northwest coast of New Zealand’s North Island. Some Moraki boulder is the largest in the world, and scientists are still studying the causes of unique cracks inside the cobble.

  1. Blue Holes

The Belize Blue Hole is located on the lighthouse reef on the edge of the seabed plateau in the Grand Bahama Shoal. The perfect circular hole is surrounded by two coral reefs and is a famous diving spot. On some quiet near ocean surface area, a deep blue circular water area suddenly appears. From the height, it likes the pupil of the sea. From the inexplicable depth, it is deep, mysterious and strange. This hole is called the blue hole. There are many blue holes in different sizes and shapes in the world’s oceans, the most famous of which is the Blue Hole on the 60-mile sea east of Belize City, the capital of Belize, Central America.

The shape of the Belize Blue Hole is an almost perfect circle with a diameter of more than 1,000 foot (305 meters) and a depth of 400 foot (123 meters). Latitude and longitude: 17.185743, 87.320568. After the glaciers melted and the sea level rose, the caves were flooded and became the holy land of many brave divers.

  1. Iceland

The Republic of Iceland, is an island country in the North Atlantic. Located at the intersection of the Atlantic Ocean and the Arctic Ocean, one of the five Nordic countries, with a land area of 103,000 square kilometers and a population of about 340,000, this is the country with the smallest population density in Europe. The capital is Reykjavik – the largest city in Iceland. The southwestern region near the capital accounts for two-thirds of the country’s population.  Iceland is a country with many volcanoes and frequent geological activities. The inland is mainly plain landform, with sandy land, cooled lava plains and glaciers. Although Iceland is located on the edge of the Arctic Circle, its climate is suitable.

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