Download ASTR 101 Deming EXAM II November 18 OFFICE HRS in CSS

ASTR 101 Deming EXAM II November 18
OFFICE HRS in CSS 1247 No office hours on Thursday November 18.
There will be office hours on Mon. Nov. 15 9:30-11:30, Tues. Nov. 16 12:30-2:30, and
Wed. Nov. 17 1:00-2:15.
REVIEW SESSIONS: Wed. Nov. 17 2:30 – 3:45 PM in CSS 2324 and
4:15-5:30 in CSS 1113 with Prof. Deming.
You bring the questions!
BRING A #2 PENCIL, A PEN AND YOUR STUDENT ID. to the Exam
Exam will be same format: 25 multiple choice (50 pts.) and multipart short answer (50 pts.)
Suggestions for study:
Use the practice exam wisely!
Mars—results from spacecraft observations
Asteroids—what are they? Where are they? Composition?
Jovian Planets—Jupiter, Saturn, Uranus,Neptune(review Jupiter’s magnetic field, Saturn’s rings)
Io, Europa, Titan (tidal heating, surface) What have recent missions discovered?
Pluto: Why is it now classified as a dwarf planet?
Comets—what are they (sketch parts)? What happens during orbit? Why do meteor showers
occur?
Dangers of Impacts—mass extinction example-65 mil. ya.
Exoplanets: methods of detection, what are they like? Revision of solar nebula theory
Electromagnetic radiation—basic properties of light, wavelength & photon energy
gamma rays, x rays, ultraviolet, visible, infrared, radio
short wavelength--------------------------->long wavelength
great photon energy------------------>less photon energy
Spectra–handout on continuous, emission, absorption spectra
How are positions of lines linked to composition? How can spectra be used to determine
temperature?
Sun–handout—solar conditions, proton-proton fusion
Why does fusion occur only in core?
Where does sun’s energy come from?
Solar cycle, auroras
Stellar properties—how do astronomers determine motion, distance, brightness, luminosity,
temperature, size, mass? (handouts)
What did you do in labs 6, 7 and 8? What stellar properties were used/determined?
How are studies of binary stars useful?
How does the HR diagram help astronomers understand stars?
ISM—what's out there? How does temperature of region determine what you see?
What problems does the presence of interstellar dust pose?
Stellar Evolution—Summary on lecture handout
Give examples of newborn stars, dying stars
Stars like Sun, 1 solar mass—Describe phases in Sun's life. Why does it change?
Gas & radiation pressure sustained by fusion’s energy support star against gravity,stable
How is the evolution of a massive star different from the Sun?