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lecture_tan11

# lecture_tan11 - 1 2 3 4 5 6 7 Admin Class website...

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Admin. 2/1/11 1. Class website http://www. astro . ufl .edu/~jt/teaching/ast1002/index.html 2. Discussion sections: Tuesday 1.55pm (period 7), Bryant 3 Wednesday 10.40am (period 4), Bryant 3 Thursday 3.00pm (period 8), Bryant 3 Office hr: Thursday (5pm), Bryant 302 3. Homework 3 due Sun. 2/6/11 by 11pm via Sakai e-learning. Keep a record of your answers to check against the solutions (posted later) 4. Reading this week : Chapters 0, 1, 2.1-2.4, 4.1, 5, 6 5. Email me Astro - news, jokes, tunes, images: [email protected] ufl . edu 6. Print out class notes and bring them to class - use these as a base outline to take extra notes in class. 7. Midterm 1, Thursday 10th February in class. BRING YOUR UF ID TO THE EXAM. For review go to Discussion Sections. There will also be an in class review in next Tuesday’s lecture. Best preparation is to review class notes (including material up to next Tuesday’s lecture) and homework, then also the textbook. You will not be able to use a calculator or refer to your class notes in the exam. You will receive a list of formulae (see next slide) . Exam is multiple choice, similar to HWs. Bring a pencil. Formulae (will be displayed for you in Midterm 1): Speed = distance / time Angular size: ! = size / distance Kepler’s 3rd Law: P 2 = a 3 [ Newton’s version of Kepler’s 3rd: P 2 " a 3 /(m 1 +m 2 ) ] Newton’s 2nd Law: F = m a Newton’s Law of Gravity: F " m 1 m 2 / r 2 Density = mass / volume Volume of a sphere = (4/3) # r 3 Surface area of sphere = 4 # r 2 Frequency: f = 1/Period Speed of wave (light) = frequency x wavelength: c = f \$ Key Concepts: Lecture 11 Earth’s Atmosphere and Greenhouse Effect Blackbody Radiation Earth’s Oceans Earth’s Magnetic Field and Aurora Earth’s Atmosphere • Atmospheric Composition 78% Nitrogen 21% Oxygen 1 % Argon, 0.03% Carbon dioxide, Water Protects the surface Blocks ultraviolet radiation from

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