unitthreeassignment3.docx - AST 1002 Horizons in Astronomy...

Info icon This preview shows pages 1–2. Sign up to view the full content.

AST 1002 Horizons in Astronomy Unit Three Book Assignment 1. Astropedia 6.2: In terms of a percentage of Earth’s size how big are Mercury Venus and Mars? How would you expect their gravities to compare? What has their size got to do with whether they are geologically active? Mercury is 38.3%, Venus is 94.9%, and Mars is 53.2% Planets size is not a given factor for geologic activity, a planet can be very large but have a very small mass, the factors that really play a role on geological activity are core heat, volcanic activity and tectonic plates movement. 2. Astropedia 6.5: What do numbers of impact craters tell us about the relative ages of the surfaces of Mercury Venus Earth and Mars? List these four in order of increasing average surface age. Craters help Scientists determine the history and age of a planet. In the early times when the solar system was forming, there was a lot of debris that were impacting planets and moons. By analyzing a recording data about the craters, we can learn if the surface is old or young, and how geologically active it is. Mercury Mars Venus Earth 3. Astropedia 6.9: Describe in what ways Mars is of special interest in terms of the Copernican revolution and for establishing whether Earth is unique in the universe or only one planet among many that might have terrestrial climates life or even intelligent life. What does Mars show us about the existence of liquid water on other planets? What does it tell us about the probability
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern