The relatively few craters that we see within the lunar maria
A) were formed by impacts that occurred after those that formed most of the craters in the lunar highlands.
B) were formed by impacts that occurred before those that formed most of the craters in the lunar highlands.
C) were created by the same large impactor that led to the formation of the maria.
D) are sinkholes that formed when sections of the maria collapsed.
E) are volcanic in origin, rather than from impacts.
Question 2
Newton's second law states: sum of forces = mass acceleration. If a known force was applied to an object with a known mass, how would you predict that object's acceleration?
A) acceleration = mass sum of forces
B) acceleration = sum of forces / mass
C) acceleration = mass / sum of forces
D) Newton's second law is irrelevant for solving this problem.
Formed Elements of Blood
Mercury’s Craters and Plains
Craters on Mars
Structures formed by phospholipids in an aqueous environment: Micelle
Impacts of Climate Change
Lunar Eclipse