The Sun The Sun in X-rays over several years The Sun is a star: a shining ball of gas powered by nuclear fusion. Luminosity of Sun = 4 x 10 33 erg/s =
Clicker Question: What is the Helium Flash? A: Explosive onset of Helium fusing to make Carbon B: A flash of light when Helium fissions to Hydrogren C:
Announcements Homework #3 is due on Thursday 9/23.
1 Global Effects Lecture #21 HNRT 228 Spring 2015 Energy and the Environment Adapted from GMU, UNM and USGS.
Announcements Online calendar has been updated – check it out Homework for Chs. 6, 7, & 8 will post by tomorrow Test 2 score have posted. If you did not.
Slide 1 WebAssign troubles If you cannot log in, you probably enrolled very recently and are not in the roster yet. Just give me your SID. If you don’t.
The Earth. General Features Mass: M Earth = 6 x 10 27 g Radius: R Earth = 6378 km Density: = 5.5 g/cm 3 Age: 4.6 billion years.
Chapter 9 Solids and Fluids Elasticity Archimedes Principle Bernoulli’s Equation.