Agenda: Here comes the sun March 18 and 21

1
Agenda Here comes the sun March 18 and 21

• Learning Target I can describe how sunspots are
  important
• Agenda
• Danger Solar Storm DVD and Questions
• Sunspot notes and mathpossible set up of
  sunspots
• Homework UW Reading pages 385-392, concentrate
  on Discovery 16-1, write 10 questions that would
  be used on a test
• Iris Challenge Homework

2

• Cool news
• March 16 A high speed solar wind stream flowing
  from a southern hemisphere coronal hole is now
  geoeffective. Enhanced geomagnetic activity,
  possibly reaching minor (G1) storm levels will be
  possible during the next 24 hours. Sky watchers
  at high latitudes should be alert for visible
  aurora tonight.
• UPDATE Periods of isolated minor (G1)
  geomagnetic storming is again being observed at
  higher latitudes while our geomagnetic field
  remains under the influence of a high speed solar
  wind stream. Enhancements will remain possible
  during the next 12 hours.
• Read more at http//www.solar-storm-warning.com/
  solar_storm_cycle_24.html
• Short movie of the 16
• http//www.spaceweather.com/

3
Cool news March 21

• COMET BRIGHTENS AS IT APPROACHES EARTH On March
  21st, Comet 252P/LINEAR will make a close
  approach to Earth--only 0.036 AU (5.4 million km)
  away. This is the fifth closest cometary approach
  on record and, as a result, the normally dim
  comet could become an easy target for backyard
  telescopes. In fact, it is brightening much
  faster than expected data.
• http//spaceweathergallery.com/comet_gallery.html

4
Vocabulary

• CME (coronal mass ejection)
• Solar cycle
• aurora

5
Sun weekly challenge due Mon March 28

• http//irischallenge.arc.nasa.gov/iris_weeklyquest
  ions.html
• Answer All Questions are online ready for you to
  research and respond. The compound question is
  What is a sun quake? What is a Hyder flare?
  Check your answer with theirs.

6
End of class Quiz

1. Describe why sunspots are important