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Compare Aldebaran with Sirius B. Which star is hotter? Which is brighter? How do you know?

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Presentation on theme: "Compare Aldebaran with Sirius B. Which star is hotter? Which is brighter? How do you know?"— Presentation transcript:

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2 Compare Aldebaran with Sirius B. Which star is hotter? Which is brighter? How do you know?

3  Do Now  Mrbrysonscience.wikispaces.com  Life Cycle of Stars Simulation  Exit Ticket

4  Heat  Color  Mass  Life Cycle  Size  Luminosity/Magnitude/Brightness

5  Place washer in blue balloon  Place black marbles in white balloons  Place white marbles in red and yellow balloons  When you start to blow, blow your balloon down towards the floor  You don’t want to swallow the marble!

6 Red Star Yellow Star White Star Blue Star Mass of Star.4 Solar Mass (2/5 the mass of our Sun) 1 Solar Mass (the mass of our Sun) 8 Solar Masses (8 times the mass of our Sun) 16 Solar Masses (16 times the mass of our Sun):

7  The balloons represent stars  Every student has a star with a different mass  How is mass different from size?  Mass is the amount of matter in the object regardless of size.  Ex. computer and box

8  When your star has finished its cycle, follow along with the rest of Galaxy 222 and fill in the boxes on your worksheet.

9 Red StarYellow Star White Star Blue Star Blow up Balloon to about 3” diameter What’s happening right now in the nursery?

10 Red StarYellow Star White Star Blue Star Wait Blow slightly more air into the balloon. This star is becoming a red giant.

11 Red StarYellow Star White Star Blue Star Wait Quickly blow up balloon until it is fully inflated. Pop balloon. Catch washer. This star exploded in a supernova and became a black hole.

12 Red StarYellow Star White Star Blue Star Wait Blow slightly more air into balloon. This star is becoming a red giant. Still a black hole.

13 Red StarYellow Star White Star Blue Star Wait Quickly blow up balloon until fully inflated. Pop balloon. Catch marble. This star exploded into a supernova and became a neutron star. Still a black hole.

14 Red StarYellow Star White Star Blue Star WaitBlow up a little bit. This star is becoming a red giant. Still neutron star.Still a black hole.

15 Red StarYellow Star White Star Blue Star WaitBlow up more. This star is a red giant. Still neutron star.Still a black hole.

16 Red StarYellow Star White Star Blue Star WaitBlow up a little more. Then cut up balloon into small pieces. Catch marble. This star releases its outer layers as a planetary nebula and becomes a white dwarf. Still neutron star.Still a black hole.

17 Red StarYellow Star White Star Blue Star Deflate Balloon This star becomes a white dwarf. Still white dwarf.Still neutron star.Still a black hole.

18  What was the effect of mass on life span?  Which stars deflated and which stars exploded?  What does this tell you about our sun?

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20  Explain the effect of mass on a star’s life cycle?


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