<p> Name: ______Web Quest 5/15/13</p><p>Star Life Cycle Web Quest</p><p>This interactive lab allows you to search for answers through reputable online resources. These resources provide great visuals and detailed information. WARNING: As with any online activity, it is easy to get distracted…be sure to stay on task.</p><p>1) What human stages of life correspond to the following stages in the life cycle of a star?</p><p>Protostar –</p><p>Fusion ignition to Main Sequence –</p><p>Red Giant/Supergiant –</p><p>White Dwarf/Black Hole – </p><p>2) At your age, what stage would you be in if you were a star?</p><p>3) What do we call the birthplace of stars?</p><p>What is it made of?</p><p>4) How long ago was our sun formed?</p><p>Protostar</p><p>5) What causes the “clumps” in the nebula to form?</p><p>6) What do these clumps become?</p><p>7) What is equilibrium in a star?</p><p>8) When does equilibrium occur in a protostar?</p><p>9) Does gravity change during star formation?</p><p>10) Name two things that cause pressure to change during star formation.</p><p>11) What are the two objects that a protostar could become?</p><p>Stars Name: ______Web Quest 5/15/13 12) What is a star?</p><p>13) What are the fuels that stars use to create energy through fusion?</p><p> a) during the majority of their lives</p><p> b) toward the end of their lives</p><p>14) In what phase do the majority of stars live?</p><p>15) Complete the Interactive Lab which shows what happens to different size stars at the beginning of their life cycles.</p><p>Small Mass Low Mass Medium Mass Massive Does this star reach Main Sequence? How long was it in Main Sequence?</p><p>16) Which has a longer life: bigger stars or smaller stars? Explain.</p><p>Stars: The Beginning of the End</p><p>17) When a star has burned off all of its ______and started to burn ______, this is the beginning of the end. The burning of ______releases a tremendous amount of energy and the outer shell has expanded in an effort to help heat from the star’s core escape into space. At this point, the star is called a ______.</p><p>Stars: The End of a Star</p><p>18) Use this page and the Interactive Lab at the bottom to answer these questions.</p><p>What is its solar What stages does it What does it How big is it? mass? go through? become in the end?</p><p>Low Mass Star</p><p>Medium Mass Star</p><p>Massive Star</p><p>Hertzsprung-Russell Diagram</p><p>19) What is an H-R Diagram? Name: ______Web Quest 5/15/13 20) What does the vertical axis represent?</p><p>21) What does the horizontal axis represent?</p><p>22) Interactive Lab</p><p>Temperature Brightness Type of star Betelgeuse Alpha Centauri B Our Sun Vega Sirius B</p><p>23) Where do most of the stars lie on the H-R Diagram?</p>