Author Question: Which was the source of lava during the flooding stage of the Moon's development? a. moonquakes ... (Read 76 times)

savannahhooper · **on:** Jul 27, 2018

Which was the source of lava during the flooding stage of the Moon's development?

a. moonquakes and tectonic shifts
b. lower crust and upper mantle
c. the deep core
d. volcanoes
e. impacts

Question 2

A medium-mass star evolves into a red giant because ____.

a. the core expands as new fusion products collect there
b. the surface of the star becomes cooler
c. energy from hydrogen shell burning and helium fusion forces the outer layer to expand
d. the surface of the star becomes hotter
e. increased stellar winds carry large amounts of material off of the surface of the star