ASTR 1345 1st Edition Lecture 20 Outline of Last Lecture I. Earth’s InteriorA. CoreB. Inner CoreC. MantleD. Crust II. Plate TectonicsA. Continental DrifB. Seafloor SpreadingIII. Moon’s SurfaceA. MareB. RillesC. TemperatureIV. TidesA. High TideB. Tidal ShifC. Spring TidesD. Neap TidesOutline of Current Lecture I. MercuryA. Caloris BasinII. VenusIII. MarsCurrent Lecturel. Mercury is 20% the size of the Earth and has extreme variations in temperature. Mercury has noseasons and there are traces of an atmosphere. Mercury is filled with subtle blue and red areas, and wrinkle-like ridges are an indication that Mercury is shrinking. It has active volcanoes and a magnetic field.These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.A. Caloris Basin is found on Mercury and it is a crater of about 800 miles in diameter. It was probably formed by a major impact that occurred early on and shock waves from the impact produced a hilly landscape on the opposite side of the planet.ll.Venus is about the same size as Earth and has a runaway greenhouse effect caused by its dense toxic atmosphere which is hot enough to melt iron. Venus has no magnetic field and only the Moon outshines Venus because of its proximity. There are a lot of lava plains and the surface temperature is 750K at all times and latitudes.lll.Mars is half the size of Earth and contains the highest mountain and the deepest and longest valley. Because of its’ smaller size, the interior f Mars cooled faster than Earth’s, so surface activity has ceased. Mars’ sky is red due to fine iron oxide (rust). There are multiple indications that Mars once had
View Full Document
Unlocking...