UNIVERSE
ASTEROIDS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
an iron meteor just abovethe surface of the earth.
|
|
|
a stony asteroid just abovethe surface of the earth.
|
|
|
a mini black hole in theearth’s atmosphere.
|
|
|
a German U-2 rocket.
|
Detailed explanation-1: -The explosion was likely caused by the collision of an asteroid or a comet with atoms and molecules of Earth’s atmosphere. Objects of a suitable size for this type of explosion collide with Earth every few hundred years on average.
Detailed explanation-2: -"But the generally agreed upon theory is that on the morning of June 30, 1908, a large space rock, about 120 feet across, entered the atmosphere of Siberia and then detonated in the sky.” It is estimated the asteroid entered Earth’s atmosphere traveling at a speed of about 33, 500 miles per hour.
Detailed explanation-3: -In 1975 Ari Ben-Menahem, a seismologist at the Weizmann Institute of Science in Rehovot, Israel, analyzed the seismic waves triggered by the Tunguska event and estimated that the energy released by the explosion was between 10 and 15 megatons in magnitude, the equivalent of 1, 000 Hiroshima atomic bombs.