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PHY 104 - Astronomy

PHY 104 - Astronomy. Lecture – Agenstein 109 Tuesday & Thursday 12:30 – 1:50 PM Lab – Agenstein 120 Tuesday 2:00 PM Thursday 2:00 PM Friday 2:00 PM Due to the limited number of Computers in the Lab, you must attend at your scheduled lab. Dr. Michael B. Ottinger. Office: Agenstein 101-J

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PHY 104 - Astronomy

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  1. PHY 104 - Astronomy Lecture – Agenstein 109 Tuesday & Thursday 12:30 – 1:50 PM Lab – Agenstein 120 Tuesday 2:00 PM Thursday 2:00 PM Friday 2:00 PM Due to the limited number of Computers in the Lab, you must attend at your scheduled lab.

  2. Dr. Michael B. Ottinger • Office: Agenstein 101-J • Phone: 271-4592 • Web: staff.missouriwestern.edu/~ottinger • Office Hours: Monday 9:00 – 9:50 AM Tuesday 8:30 – 9:20 AM Thursday 8:30 – 9:20 AM Friday 9:00 – 9:50 & 11:00 – 11:50 AM and by appointment

  3. Text: Universe 8eby Roger Freedman

  4. Course Description • Introducing Astronomy Exam: February 7 • Planets and Moons Exam: March 20 • Stars and Stellar Evolution Final Exam: May 1 (11:30 – 1:20) All exams are closed book / closed note.

  5. Attendance Policy • You are expected to be in class every day, or be responsible for the information given. • Arriving late counts as ½ absence • Leaving early counts as ½ absence • After 5 unexcused absences (including lab) you will be dropped from the course • Excused absences for approved school related business – with prior notification

  6. Daily Reading Quizzes • We will cover one chapter of the text each class period. • At 12:30 I will hand out a short reading quiz to verify you have read the chapter. • Quiz taken from “Review Questions” at the end of the chapter • Quizzes will be collected at 12:35 pm. • Missing the quiz counts as a tardy (1/2 absence)

  7. End of Class Summaries • At the end of class I hand out a summary sheet. • In a few sentences summarize the main topics of the lecture. • Include any concepts/questions you would like me to cover at the beginning of the next class. • Not submitting a summary counts as leaving class early (1/2 absence)

  8. Lab • Labs meet weekly in Agenstein 120 • next week no class/lab on Tuesday, other labs will meet • Week before spring break Thursday/Friday labs will not meet • Lab reports to be completed individually during the lab period. • Each report worth 10 points.

  9. Grades A = 90 - 100% B= 80 - 90% C= 70 - 80% D= 60 - 70% F = <60% Quizzes: 20% Labs: 30% Exams: 50%

  10. Let’s Get Started • Reading Assignment: Before Thursday Jan 17: Read Chapter 1 Before Thursday Jan 24: Read Chapter 2 & 3

  11. When you look at the sky, what do you see? • Clouds • Moon • Sun • Stars • Comets • Shooting Stars • Planets (moving stars)

  12. How can we understand the Heavens? • Observations: What do you see? How do objects move? What Similarities or Differences exist? • Theory: Make a guess as to what you are observing that can predict future observations • Improved observations: Check theory • Observation: Sun rises in east and sets in the west every day and then rises in the east again. • Theory: Sun is a glowing ball of fire that rides on the back of the chariot of a God- taking off every morning and landing every night. • Sun sets later at points to the west. No matter how far west you travel, sun always sets further west. • “Scientific Method”

  13. Measurements • Angular Measurement: • Objects appear to move in circular paths around the earth • Stars orbit the North Star • 360 per revolution

  14. Angular vs Linear Size • Which is larger the Sun or the Moon? • Same Angular Size (as seen from Earth) • Sun has a diameter 400 times larger than the moon.

  15. Comparison Angular to Linear Size

  16. Calculating Angular Size Moon: Diameter = 3480 km Distance = 385,000 km Sun: Diameter = 1,400,000 km Distance = 150,000,000 km

  17. Scientific Notation • Distance to Sun: 150,000,000 km • Distance to Center of Galaxy: 100,000,000,000,000,000 km • Power of 10 Notation Sun: 1.5x108 km Center of Galaxy: 1.0x1017 km

  18. Powers of Ten Video

  19. Summary • Summarize the main topics of today’s class • Include any questions you would like answered at the beginning of class tomorrow. What did you not understand?

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