20111230

Astronomy haiku: dark matter

Astronomy 210 Haiku review, fall semester 2011
Cuesta College, San Luis Obispo, CA

Students find their assigned groups of three to four students, and work cooperatively on an worksheet to review for a midterm.

Identify the relevant astronomy concept/answer for this haiku. Briefly explain your choice. Partial credit possible.
Surrounding halo,
invisible gravity.
Holds Milky Way tight.
http://twitter.com/#!/Patrick_M_Len/status/72024267604234240
Concept: __________
Explanation: __________

Section 70160
"Dark matter--Evidence that extra mass lies in extended halo sometimes called dark halo. Not luminous matter detected by its gravitational force."

"Dark matter--No one has seen dark matter because it doesn't give off light, but it creates gravity, so we know it exists."

"Dark matter--Proves Kepler's third law wrong because stars farther out do not move slower because there is no center of gravity."

"Dark matter--Dark matter is gravity that holds the Milky Way together and is unable to be seen."

"Dark matter--The Milky Way doesn't follow Kepler's third law."

"Dark matter--Dark matter is invisible and it holds everything inside the Milky Way."

"Dark matter--Dark matter holds the Milky Way together."
Section 70158
"Dark matter--That's what holds the Milky Way together."

"Monolithic collapse--flattens out over time with halo making disk left."

"Dark matter--Dark matter is the unseen gravity force which fills the universe around galaxies, surrounding the Milky Way."

"Black hole! You know black holes are present when there is a gravity alteration like an entire galaxy clumped together."

"Dark matter--Dark matter is the stuff that surrounds the Milky Way and keeps everything tight."

"Black hole--Black holes are at the center of spiral galaxies and have infinite gravity due to their immense density."

"Dark matter--Dark matter surrounds galaxies, holding them together as they rotate with lots of mass."

"Antimatter/dark matter--is found all around the Milky Way and is unexplained but we know it's there."

Dark matter--Dark matter is invisible but still creates a gravitational pull."

20111228

Astronomy in-class activity: planet-hunting

Astronomy 210 In-class activity 6 v.11.12.22, spring semester 2012
Cuesta College, San Luis Obispo, CA

Students find their assigned groups of three to four students, and work cooperatively on an in-class activity worksheet to determine where in the sky each naked-eye planet will be observed on a given date (here, February 2, 2012).



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20111214

Physics quiz archive: temperature, thermal equilibrium, heat transfer

Physics 205A Quiz 7, fall semester 2011
Cuesta College, San Luis Obispo, CA

Sections 70854, 70855, version 1
Exam code: quiz07n0N3
Sections 70854, 70855 results
Quiz 7 results (max score = 30):
0- 6 : * [low = 6]
7-12 : ********
13-18 : *******************
19-24 : *************** [mean = 19.2 +/- 5.7]
25-30 : ********* [high = 30]

20111211

Astronomy quiz archive: solar system

Astronomy 210 Quiz 7, fall semester 2011
Cuesta College, San Luis Obispo, CA

Section 70160, version 1
Exam code: quiz07n0N3
Section 70160
Quiz 7 results (max score = 40):
0- 8.0 :
8.5-16.0 : ***** [low = 11.5]
16.5-24.0 : **********
24.5-32.0 : ******** [mean = 24.5 +/- 8.1]
32.5-40.0 : ***** [high = 40.0]

Astronomy quiz archive: solar system

Astronomy 210 Quiz 7, fall semester 2011
Cuesta College, San Luis Obispo, CA

Section 70158, version 1
Exam code: quiz07s3tI
Section 70158
Quiz 7 results (max score = 40):
0- 8.0 : ** [low = 4.0]
8.5-16.0 : *******
16.5-24.0 : ***************** [mean = 18.8 +/- 7.2]
24.5-32.0 : ****
32.5-40.0 : * [high = 40.0]

20111210

Total lunar eclipse, December 10, 2011

111210-1280484-1
http://www.flickr.com/photos/waiferx/6486545953/
Originally uploaded by Waifer X

Wifey X and Briquetta (puppy) watching the total lunar eclipse, December 10, 2011.

20111205

Overheard: all that glitters

Astronomy 210L, fall semester 2011
Cuesta College, San Luis Obispo, CA

(Overheard while students set up their research posters for the last astronomy lab meeting.)

Student: "Do you like how I did the galaxies [at the top of the poster]?"

Instructor: "Are those [elliptical galaxy and spiral galaxy] just glitter and glue?"

Student: "Yeah. I had some space to fill in so I went with that."

Instructor: "Seriously, when was the last time you got to use glitter and glue?"

Student: (Beat.) "I'll have to get back to you on that."

20111204

Overheard: fabulous graph

Astronomy 210L, fall semester 2011
Cuesta College, San Luis Obispo, CA

(Overheard while students set up their research posters for the last astronomy lab meeting.)

Instructor: "Are these data points on your graph...sequins?"

Student: "No, they're just drawn in with purple ink."

Instructor: "That's too bad." (Beat.) "Because if they were sequins, your graph would be...fabulous!"