Chapter 6 Homework

Chapter 6 Homework - Chapter 6 Fill In the Blank 1....

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Chapter 6 Fill In the Blank 1. Mercury's iron core contains a larger fraction of the planet's mass than does Earth's core. 2. Mercury's rate of rotation was first measured using radar . 3. Although Mercury's daytime temperatures are always very hot, it may still be possible for the planet to have sheets of water ice at its poles. 4. Mercury's magnetic field is about 1/100 that of Earth and was originally thought not to exist at all. 5. Venus's rotation is unusual because it is retrograde . 6. The most abundant gas in the atmosphere of Venus is carbon dioxide . 7. The runaway greenhouse gas in the atmosphere of Venus is carbon dioxide 8. The surface of Venus has been mapped using radar . 9. the surface of Venus appears to have been resurfaced by volcanism every few hundred million years. 10. The main difficulties in using landers to study Venus's surface are the planet's extremely high temperatures and atmospheric temperature . 11. The southern hemisphere of Mars consists of heavily cratered highlands. 12. The Tharsis region of Mars is a large equitorial buldge. 13. The great height of Martian volcanoes is a direct result of the planet's low gravity . 14. The flowing-liquid appearance of the ejecta surrounding Martian impact craters is evidence of a layer of water ice just under the surface. 15. Runoff channels on Mars carried water from the southern mountains into the valleys. Review and Discussion 1. In contrast to Earth, Mercury undergoes extremes in temperature. Why? Because it doesn’t have an atmosphere and it is so close to the sun.
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Chapter 6 Homework - Chapter 6 Fill In the Blank 1....

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