Please somebody help me out with these questions. 1.If a major asteroid collisio
ID: 232903 • Letter: P
Question
Please somebody help me out with these questions.
1.If a major asteroid collision in the asteroid belt occurs, on average, 1 time in 100,000 years, then how many major collisions have occurred over the approximately 4 billion year history of the solar system?
a)
2.If all the asteroids were gathered into a single object, it would make an object
b) with enough mass to gather hydrogen and helium and become a gas giant.
c) about the size of Earth's moon.
d) about the size of the Earth. (correct answer)
Which of the following are evidence for an asteroid impact being the cause of the extinction of the dinosaurs 65 million years ago (as well as 75% of all species alive at the time)?
a)no dinosaur fossils being present in rocks younger than 65 million years old
b)a worldwide layer of the element iridium in 65 million year old rocks
c)a buried crater more than 100 km across in the Gulf of Mexico
d)all of the above (correct answer)
about 40,000 b) about 4 billion (correct answer) c) about 4 million d) about 4,000Explanation / Answer
1. a) about 40,000
2. a) about half the diameter of Earth's moon
3. d) all of the above