Author Question: The mean distance between the Earth and Sun is called A) the astronomical unit. B) the parsec. ... (Read 30 times)

cartlidgeashley · **on:** Jul 27, 2018

The mean distance between the Earth and Sun is called

A) the astronomical unit.
B) the parsec.
C) the Kepler.
D) the megameter.
E) the light-year.

Question 2

What evidence is there that Earth has been struck by large meteorites?

What will be an ideal response?

dlook33 · **Reply #1 on:** Jul 27, 2018

Answer to Question 1

A

Answer to Question 2

There are numerous craters still visible today, such as the Barringer Crater in Arizona and the Manicouagan reservoir in Canada. Both clearly display the traits of a large impact, including a central peak in the case of the Canadian crater. There is also evidence of a large impact in the Yucatan that may have caused the extinction of the dinosaurs.