Transcript March 18 and 21

Agenda: Here comes the sun
March 18 and 21
1. Learning Target: I can describe how sunspots are
important
2. Agenda
1.
Danger Solar Storm DVD and Questions
2. Sunspot notes and math—possible set up of sunspots
5. Homework: UW Reading pages 385-392,
concentrate on Discovery 16-1, write 10 questions
that would be used on a test
6. Iris Challenge Homework
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-stormwarning.com/solar_storm_cycle_24.html
Short movie of the 16
http://www.spaceweather.com/
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.h
tml
Vocabulary
CME (coronal mass ejection)
Solar cycle
aurora
Sun weekly challenge due Mon
March 28
• http://irischallenge.arc.nasa.gov/iris_wee
klyquestions.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.
End of class Quiz
1. Describe why sunspots are important