HW#20: pg. 414 Rev 4 – 6; CST 4 – 6
Rev 4 – 6
4. What is helioseismology, and what does it tell us about the Sun?
5. How do observations of the Sun's surface tell us about conditions in the solar interior?
6. Describe how energy generated in the solar core eventually reaches Earth.
CST 4 – 6
4. If astronomers lived on Venus instead of Earth, the solar constant they measure would be (a) larger; (b) smaller; (c) the same.
5. The primary source of Sun's energy is (a) fusion of light nuclei to make heavier ones; (b) fission of heavy nuclei into lighter ones; (c) the slow release of heat left over from the Sun's formation; (d) the solar magnetic field.
6. According to the standard model of the Sun (Figure 16.6), as the distance from the center increases, the density decreases (a) at about the same rate as the temperature decreases; (b) faster than the temperature decreases; (c) more slowly than the temperature decreases; (d) but the temperature increases.