How long did it take plant and animal life to start again after the 1908 mysterious explosion in siberia wilderness?

1. What is the estimated mass of the projectile that exploded over Tunguska in 1908?
2. What event occurred early in the 20th century in Tunguska Siberia Russia and what year was it?
3. What caused the Tunguska explosion?
4. How big was the meteor that hit Siberia?
5. What is the meaning of Tunguska?
6. How did Tunguska affect Earth?
7. How often does a Tunguska Event occur?
8. Is Tunguska in Siberia?
9. How big was the explosion that killed the dinosaurs?
10. When was the last big meteor to hit Earth?
11. Was Tunguska a nuclear explosion?
12. How many meteors hit the Earth every day?
13. Where did the meteor hit that killed the dinosaurs?

What is the estimated mass of the projectile that exploded over Tunguska in 1908?

Based on diameter, depth and morphology of the lake crater, and assuming that the impacting object was an asteroid, a mass of 1.5 × 10⁶ kg (∼10 m diameter) was estimated for the projectile.

What event occurred early in the 20th century in Tunguska Siberia Russia and what year was it?

Tunguska event, enormous explosion that is estimated to have occurred at 7:14 am plus or minus one minute on June 30, 1908, at an altitude of 5–10 km (15,000–30,000 feet), flattening some 2,000 square km (500,000 acres) and charring more than 100 square km of pine forest near the Podkamennaya Tunguska River in central ...

What caused the Tunguska explosion?

In the early morning of June 30, 1908, a massive explosion flattened entire forests in a remote region of Eastern Siberia along the Tunguska River. ... Khrennikov and co say the explosion was caused by an asteroid that grazed the Earth, entering the atmosphere at a shallow angle and then passing out again into space.

How big was the meteor that hit Siberia?

The researchers estimated that the Tunguska meteor likely measured between 328 and 656 feet (100 and 200 m) in diameter, and hurtled through Earth's atmosphere at roughly 45,000 mph (72,000 km/h). During its fiery passage, the meteor would lose some of its mass.

What is the meaning of Tunguska?

Tunguska. / (Russian tunˈɡuskə) / noun. any of three rivers in Russia, in central Siberia, all tributaries of the Yenisei: the Lower (Nizhnyaya) Tunguska 2690 km (1670 miles) long; the Stony (Podkamennaya) Tunguska 1550 km (960 miles) long; the Upper (Verkhnyaya) Tunguska which is the lower course of the Angara.

How did Tunguska affect Earth?

A mysterious aspect of the Tunguska event was that no crater was ever found. But, even without a crater, scientists still categorized it as an impact event. They now believe the incoming object never struck Earth, but instead exploded in the atmosphere, causing what's known as an air burst.

How often does a Tunguska Event occur?

Small meteors enter and burn up in the Earth's atmosphere every single day, never coming near to having impact with the ground. Scenarios like the Tunguska Event are much rarer. It is estimated that they occur every 300 to 1,000 years.

Is Tunguska in Siberia?

Today, June 30, 2008, is the 100th anniversary of that ferocious impact near the Podkamennaya Tunguska River in remote Siberia--and after 100 years, scientists are still talking about it.

How big was the explosion that killed the dinosaurs?

According to abundant geological evidence, an asteroid roughly 10 km (6 miles) across hit Earth about 65 million years ago. This impact made a huge explosion and a crater about 180 km (roughly 110 miles) across.

When was the last big meteor to hit Earth?

The last known impact of an object of 10 km (6 mi) or more in diameter was at the Cretaceous–Paleogene extinction event 66 million years ago.

Was Tunguska a nuclear explosion?

1) The Tunguska explosion may have been a thermonuclear explosion in the air after the asteroid entered the atmosphere, and the nuclear explosion may have been triggered by the high temperature and high pressure caused by a rock burst of the asteroid; the rock burst is triggered by the high temperature caused by the ...

How many meteors hit the Earth every day?

An estimated 25 million meteoroids, micrometeoroids and other space debris enter Earth's atmosphere each day, which results in an estimated 15,000 tonnes of that material entering the atmosphere each year.

Where did the meteor hit that killed the dinosaurs?

The impact site, known as the Chicxulub crater, is centred on the Yucatán Peninsula in Mexico. The asteroid is thought to have been between 10 and 15 kilometres wide, but the velocity of its collision caused the creation of a much larger crater, 150 kilometres in diameter - the second-largest crater on the planet.