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Unformatted text preview: Learning Objectives Weeks 7-8 1. How does the sun generate energy? The thermonuclear fusion of hydrogen at the Sun’s center converts four protons into a single nucleus of 4 He, an isotope of helium. 2. How long does it take sunlight to reach us starting from its initial journey from the sun’s core? 3. Neutrinos provide information about the Sun’s core, come in three varieties and possess a small mass. Why do we only detect a third of the neutrinos that come from the sun? 4. The photosphere is the lowest of three main layers in the Sun’s atmosphere. Like water boiling on a stove, the photosphere bubbles with convection cells. 5. The chromosphere is characterized by spikes of rising gas. What are these called? Jets of gas thousands of kilometers in height rise through the chromosphere. What are these called? 6. The corona ejects mass into space to form the solar wind. The Sun’s magnetic field heats the corona, produces flares, and causes massive eruptions. A solar flare can have as much energy as 100 trillion produces flares, and causes massive eruptions....
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This document was uploaded on 12/13/2011.
- Fall '09