The Size of Craters Formed by Falling Objects

The size of the crater formed by the falling object Meteor is a small body running around the sun. Due to the friction between the human body and the atmosphere, they occasionally stick to the earth's favorite, and burn the surface of the earth. When they hit the surface of the earth, they are called meteorites. In Arizona, a huge meteorite formed a crater; scientists estimated that it struck the Earth about 500,000 years ago. When they attack the Gulf of Mexico, the meteorite can explain the extinction of dinosaurs.

Foreign matter colliding with the ground is about half of the entry speed and explodes 12 to 20 times the crater. Craters on Earth are like being formed on planets with lunar surfaces and rocks. Small ones form a simple bowl-like crater. Larger effects cause rebound and form a central peak; slide along the edge to form the terrace. The greatest influence forms the basin, where multiple rebounds form some inner peaks

The smaller impact characteristics from tens of kilometers to microscopic dimensions are explained in terms of craters. The relative age of the moon crater is represented by its morphological and structural characteristics. The young crater has a rough contour surrounded by muddy debris called a jet and a long, bright color light made up of the expelled material hitting the moon. Older craters have rounded and soft contours that are the result of sustained shelling. The shape and structure of the crater also produce information about the process of influence. When an object strikes a larger object at a speed of several kilometers per second, the available kinetic energy is sufficient to completely melt and even partially evaporate the collision object and a small fraction of its target material . In the event of a collision, the molten plate is thrown with a large amount of gravel and a spray blanket is formed around the contact area.

Small objects often collide with the earth. There is an inverse relationship between object size and the frequency of these events. The lunar crater record shows that the collision frequency decreases with the approximate plane of the formed crater diameter, which is proportional to the impactor diameter on average. An asteroid with a diameter of 1 km (0.62 mi) attacks the earth once every 500 thousand years. A large collision - 5 km (three miles) of objects - occurs about every 20 million years. The last known influence of objects greater than 10 km (6 mi) in diameter is in the Cretaceous - Lung Extinction event of 66 million years ago.