We saw in class that there are 6500 known NEA\'s with diameters larger than 100

Question

We saw in class that there are 6500 known NEA's with diameters larger than 100 meters. Given that all of these objects will eventually impact the Earth over the next 32 million years, what is the likely time interval between impacts assuming that the asteroids encounter the Earth at random? Show your calculations. Are you surprised at the result found in action item 1? Did you think the time interval between collisions would be higher or lower - explain your reasoning. Action item 3: Use the internet to find the estimated age of the Arizona Impact Crater (also called Meteor Crater). Also, how big was the NBA impactor that produced the crater and what was the impactor apparently made of? Use the internet to investigate the Torino Impact Hazard Scale. In more than .100, but less than 400 words, in your own words explain what it sets out to describe and quantify. Write your answer in the space over the page

Explanation / Answer

1). A 1.1 kilometer diameter asteroid encounter a 0.0 to 0.3 percent probabilty of colliding with the earth in the year 2880.

2). the time interval of collision is lower or may it is not fixed but it will happen. It could happen next year or it may not happen for next 10000 years.

3). Age - 50,000 years

Impactor size - 1200 meter and 200 meter deep.

Compostion - Fine graind iron rich rocks.

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