Transcript ISP 205: Visions of the Universe

Welcome
back!
Introduction to
the Universe
Astro 1105/1107
Prof. Julia Kregenow
Course Announcements
Any problems accessing MasteringAstronomy hw?
Reading Assignment for tomorrow: Ch 2 & 3
- see “Course Schedule” online for parts to SKIP!
- take reading notes (how?)
- real reading quiz tomorrow
Homework for tomorrow (due 10:30am)
Reading Questions Ch 1 & 2 (online)
Sun observing (optional) Thursday 1pm (Fri backup)
Syllabus Quiz
All books and papers off your desk. PRS only.
What is your professor’s name?
1. John
2. Fred
3. Mick Jagger
4. Julia
5. Hey You
Why are we doing reading quizzes
and reading questions?
1. To ensure that you’re reading the text
2. To be mean
3. To take attendance
4. So Julia doesn’t have to lecture as much
5. No reason
The final exam is ______.
1. optional
2. required
What % of the course grade is
in-class participation?
A.
B.
C.
D.
0%
15%
45%
75%
What should you do if you are running 5
minutes late for class one day and will
miss the reading quiz?
1. Skip class
2. Freak out
3. Make up the reading quiz after class
4. Relax; you get 3 freebie days
Survey results
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Black holes: |||||||
Whole / end of / beginning of / beyond Universe: ||||||
Alien life: |||
Dark matter / energy: |||
Star formation / life cycle: ||
Galaxies / formation: ||
Earth place in Universe: ||
Methods of discovery: |
Space travel: |
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Stargazing / starmaps: |||| (come to evening viewing sessions!)
Solar flares / storms: || (come to Sun viewing session!)
Mars: || (see textbook on reserve in Physical Sciences Library)
Time Travel: | (see pg 466 in textbook)
Antimatter: | (check your textbook index - sprinkled throughout)
The rotation of the earth about its
axis causes how many of the following?
-The rising and setting of the sun
-The rising and setting of the moon
-The rising and setting of stars
-The rising and setting of distant
galaxies
Answer: 0, 1, 2, 3, or 4?
Sec 2.1 Why do stars rise and set?
How long was the
camera shutter left
open to make this
time-lapse
photograph? (p27)
1. About 1 minute
2. About 30 minutes
3. About 6 hours
4. About 12 hours
5. About 24 hours
What direction is the
observer facing in
this picture? (p27)
Which of the following time-lapse pictures
could have been taken in northern Alaska?
1.
3.
2.
4. All
5. None
Viewed from the earth’s equator, stars set
1. about six hours after they rise.
2. about twelve hours after they rise.
3. about twenty four hours after they rise.
4. never.
5. at different times, depending on the star.
Viewed from the earth’s pole*, stars set
1. about six hours after they rise.
2. about twelve hours after they rise.
3. about twenty four hours after they rise.
4. never.
5. at different times, depending on the star.
* Either North or South
What
direction is
the camera
facing in this
picture?
Sec 2.2 What causes the changing seasons?
Temperatures are warmer in
summer primarily because
1. Earth is closer to the Sun
2. One hemisphere of Earth is closer to the Sun
3. The Sun appears higher in the sky
4. Both 1 & 2
Sun’s height in sky determines:
1. Angle of sunlight. (More direct = warmer: summer)
2. Length of day. (Longer day = warmer: summer)
It’s all about the axis tilt
It’s all about the axis tilt
animated figure…