<p><strong><span style="font-size: 16px;"><span style="line-height: 16.8px;">Open&nbsp;</span><a href="http://aspire.cosmic-ray.org/Labs/StarLife/starlife_after.html">the activity</a><span style="line-height: 16.8px;">&nbsp;and complete the activity. Answer these questions:</span></span></strong></p>
<p><span style="font-size: 16px; line-height: 16.8px;">1. Click on the interactive lab "Helium&nbsp;</span><span style="font-size: 16px;">Burning</span><span style="font-size: 16px; line-height: 16.8px;">&nbsp;Process". Play with the simulation. What is the relationship&nbsp;between pressure gravity and&nbsp;</span><span style="font-size: 16px;">temperature</span><span style="font-size: 16px; line-height: 16.8px;">&nbsp;in a helium burning star?</span></p>
<p><span style="line-height: 16.8px; font-size: 16px;">2. Why does a star burn helium?</span></p>
<p><span style="line-height: 16.8px; font-size: 16px;">3. Why does the outer shell of a star expand?</span></p>
<p><span style="font-size: 16px; line-height: 16.8px;">4. As the outer shell of a star expands, the surface&nbsp;</span><span style="font-size: 16px;">temperature</span><span style="font-size: 16px; line-height: 16.8px;">&nbsp;if the star&nbsp;</span><span style="font-size: 16px;">decreases</span><span style="font-size: 16px; line-height: 16.8px;">. Helium burning is much&nbsp;hotter than hydrogen burning. Why would the surface&nbsp;</span><span style="font-size: 16px;">temperature</span><span style="font-size: 16px; line-height: 16.8px;">&nbsp;decrease?</span></p>
<p><span style="font-size: 16px; line-height: 16.8px;">5. Which human life stage is a Red Giant&nbsp;</span><span style="font-size: 16px;">similar</span><span style="font-size: 16px; line-height: 16.8px;">&nbsp;to?</span></p>
<p><span style="line-height: 16.8px; font-size: 16px;">6. <span style="font-size: 16px; line-height: 16.8px;">Describe the death of low mass stars.&nbsp;</span>How is a white dwarf related to a planetary nebula?</span></p>
<p><span style="font-size: 16px; line-height: 16.8px;">7. <span style="font-size: 16px; line-height: 16.8px;">Describe&nbsp;</span>the death of medium mass stars. What are the&nbsp;</span><span style="font-size: 16px;">characteristics</span><span style="font-size: 16px; line-height: 16.8px;">&nbsp;of a neutron star?</span></p>
<p><span style="line-height: 16.8px; font-size: 16px;">8.&nbsp;<span style="font-size: 16px; line-height: 16.8px;">Describe&nbsp;</span><span style="font-size: 16px; line-height: 16.8px;">the death of high mass stars. What happens during the carbon burning process?</span></span></p>
<p><span style="line-height: 16.8px; font-size: 16px;"><span style="font-size: 16px; line-height: 16.8px;">&nbsp;</span></span></p><input name="sch-grade-item-max-points" type="hidden" value="10">