Mercury & Venus Flashcards
What is Mercury God of?
Messages & Communication
What is the first planet from the sun?
Mercury
What is the diameter of Mercury?
.38
What planet is the smallest in the solar system?
Mercury
What is the Albedo of Mercury?
.12
What is the axial tilt of Mercury
.5
What planet has the most eccentric orbit?
Mercury
What planet has the smallest axial tilt?
Mercury
What planet is most inclined to the ecliptic plane?
Mercury
What is the semimajor axis of Mercury?
.39au
What is the Sidereal Period of Mercury?
24 years
What kind of rotation does Mercury have?
Prograde Rotation
What spin-orbit coupling does Mercury have?
3:2
Explain a 3:2 spin-orbit coupling
3 rotations for every 2 revoloutions
What type of atmosphere does Mercury have?
trace
When looking at mercury, how does the atmosphere look?
Black
What planet has the most extreme temperature change of all the planets?
Mercury
The oldest surface feature on a planet?
Intercrater Plains
What planet has a surface feature of intercrater plains?
Mercury
Low in elevation and represent smooth plains
Intercrater Plains
Lighter in color and more uniformly cover the surface
Intercrater Plains
Are intercrater plains older than lunar maria?
yes
Have a circular shape and are created by meteoritic shock waves
Impact craters
What do impact craters have on Mercury that surprised scientists?
ice