Exam 19: Meteorites, Asteroids, and Comets

The diagram below shows the relative size of Earth's moon and the asteroid 10 Hygiea. Based on this diagram, what is the diameter of 10 Hygiea?

The existence of the Oort cloud cannot be confirmed observationally from Earth because the objects are too small and distant.

Explain how the impact of a large comet may have caused the extinction of the dinosaurs.

What evidence do we have that the orbits of the asteroids are modified by the gravitational influences of the planets?

____ are round bits of glass found in some stony meteorites.

Kirkwood's gaps in the asteroid belt are caused by orbital resonances with Mars.

Meteors seen during a meteor shower appear to come from a point in the sky called the ____________________.