101 interesting things about the earth (Term 4)

How many minerals exist on the earth known? How many lightning strikes are there globally? The moon and the earth are born separately? . All these questions will be answered in part 4 of 101 interesting things about the earth.

Discover 101 unexpected interesting things about the Earth

61 . The largest desert in the world?

The Sahara Desert in northern Africa is 23 times larger than the Mojave Desert in southern California, USA, with an area of ​​over 9,000,000 km², approximately the size of the United States and China.

Sahara Desert is taken from outer space.(Photo: NASA)

62. Which planet has more moons, earth or Mars?

Mars has 2 satellites centered around Phobos and Deimos. The Earth has only one natural satellite, the moon. Outer planets often have many moons, most recently found and may lead to cases where scientists need to redefine what the moon is.

Mars has 2 satellites centered around Phobos and Deimos.(Photo: garm.nu)

63. The deepest lake in the world?

Lake Baikal in central southern Siberia has a depth of 1.7 km. The lake is dated to 20 million years and contains 20% of the fresh water on earth.

Fresh water reserve of Lake Baikal, according to calculations, is used for 5 years for the demand for fresh water of all humanity. Scientists have conducted many research and surveys but there are still many mysteries that have not been clarified.

Lake Baikal.(Photo: baikal-maria)

64. Origin from the "volcano" (volcano)?

It originates from the "Vulcan" - Roman fire god.

Vulcan god and other gods.(Photo: eb.uvic)

65. How many minerals exist on the earth known?

More than 5,300 types of minerals are known; More than 5,070 of these have been approved by the International Mineralogical Association (IMA), of which only about 200 are of major importance. About 50-100 new minerals are described every year.

Minerals .(Photo: sos.mo)

66. Water reserves worldwide?

Total global reserves are 326 million cubic miles.

67. The world's largest island?

Greenland Island covers an area of ​​2,176,000 km ² . The continent is defined as large soil masses made of low density rock, floating on melted materials below. Greenland fits this description but it is only 1/3 of Australia. Some scientists call Greenland an island, some called continents.

(Photo: alanarnette)

68. Which parts of the earth have the most volcanoes?

The most prominent topographic feature on earth is the giant volcanic mountain chain - the mountain range is longer than 48,000 km and averages 5.5 km on the seabed. It is called the ocean separator, where lithosphere fragments are separated when volcanic activity takes place. There are more volcanoes in this area than on the ground.

Volcanoes operating under the sea.(Photo: volcanovillage)

69. Which volcanic eruption destroyed the most?

Tambora eruption in Indonesia in 1815 killed 90,000 people. Most died of starvation after the eruption of destroyed crops, polluted water and disease.

Reconstructing the volcanic scene of Tambora erupting in 1815. (Photo: pbs.org)

70. The moon and the earth are born separately?

Not really. One theory is that the moon is formed from a part of the earth, not long after our planet was born. A Mars-sized object has crashed into our planet and shattered. The orbiting debris around the earth, most of it accumulates to create the moon, while the earth is almost unmoving.

Earth and Moon.(Photo: users)

71. How many lightning strikes are there globally?

The average is about 100. However, these are only lightning strikes on the ground. Every minute, more than a thousand thunderbolts erupted throughout the earth, creating about 6,000 lightning bolts. Many of them go from one cloud to another.

(Photo: epod)

72. All rivers live?

Of course not literally. But like all other living things, rivers have its life. They are born, grow and grow. They can die during geological time.

(Photo: jimwegryn)

73. Can meteors make an island?

For decades people have speculated that meteorite collisions from ancient times have created hot spots where volcanic activity takes place, and pushed the mountains out of the sea where it had never before appeared. . There is no definitive answer to this problem, but a new computer model suggests that Hawaii has been formed in this way.

Heavenly Hoba Hoba falls in Namibia weighing 66 tons.(Photo: astrosurf)

74. Is the state of Louisiana bulging or sinking?

Louisiana lost about 78 km ² of land each year due to coastal landslides, storms and other human causes, making it sink. Most New Orleans actually sunk 3.4 m below sea level.

Louisiana State Map.(Photo: hort.purdue)

75. How much will sea level rise if Antarctic ice melts?

Antarctica accounts for almost 90% of the world's ice and 70% of global freshwater. If the entire Antarctic ice sheet melted, the sea level would rise by about 67m, equivalent to a 20-storey building. Scientists know that there is a melting line underneath. The United Nations estimates that under the worst scenario, the sea ​​level will rise by 1m by 2100.

(Photo: marz-kreations)

76. Is ice a mineral?

Yes, ice is a mineral and is described in Dana 's mineral system.

(Photo: severinghaus)

77. Which mineral is the softest?

Talc is the softest mineral, a magnesium silicate mineral with the chemical formula H2Mg3 (SiO3) 4 or Mg3Si4O10 (OH) 2. Talc is widely used in loose form called talcum powder, which is often used to make talcum powder.

(Photo: musee)

78. Which mineral is the hardest?

The type that becomes emotionally meaningless after divorce but still retains the value of money (diamonds).

(Photo: pbs.org)

79. How many colors are there in fireworks?

The chemical composition of the earth has created colors.Strontium produces red, copper produces a blue color, sodium produces yellow, iron filings and charcoal powder produces yellowish shades. Big bangs and light rays are made from aluminum powder.

(Photo: jenningsosbornefamily)

80. The Earth has the worst climate in the solar system?

There are still more wild climate events than elsewhere.Mars can suffer four times the hurricane on Earth. Dust storms on the red planet can submerge the entire sphere. Saturn once had a wind storm covering an area twice as large as our planet and lasted at least 3 centuries. Venus is a living hell. Pluto is more frosty than the coldest place on earth.

NASA's geological and climate research station on Mars.(Photo: NASA)

(These answers were provided by SPACE.com in collaboration with the US Geological Survey (USGS), with the American National Oceanic and Atmospheric Association).