Shocks And Rocks

2010 Bill Martin Jr. Picture Book Award Master List (Kansas Reading Association) 2009 Association for Gerontology in Higher Education Book Award for Children's Literature on Aging for Primary Readers Rock and Brock may be twins, but they are as different as two twins can be. One day, their grandpa offers them a plan—for ten straight weeks on Saturday he will give them each one dollar. But there is a catch! "Listen now, for here's the trick, each buck you save, I'll match it quick. But spend it, there’s no extra dough, so save your cash, and watch it grow." Rock is excited—there are all sorts of things he can buy for one dollar! So each week he spends his money on something different—an inflatable moose head, green hair goo, white peppermint wax fangs. But while Rock is spending his money, Brock is saving his. And each week when Rock gets just one dollar, Brock’s savings get matched. By the end of summer, Brock has five hundred and twelve dollars, while Rock has none. When Rock sees what his brother has saved, he realizes he has made a mistake. But Brock shows him that it is never too late to start saving.

Impact phenomena play an essential role in the formation of planets and great influence during their evolution. The first part of this book describes the dynamics that propels asteroids in our solar system; the second part is devoted to impact phenomena; the third inspects terrestrial impacts of asteroids and the hazards due to space debris orbiting our planet. The book addresses scientists working in astronomy, extraterrestrial physics and geophysics. But it should also be of great interest to a learned public that wants to know about the most recent developments in this fast-moving field of theoretical and observational research.

This book is Volume 1 of the EUROCK 2018 proceedings. Geomechanics and Geodynamics of Rock Masses contains contributions presented at EUROCK 2018, the 2018 International Symposium of the International Society for Rock Mechanics (ISRM 2018, Saint Petersburg, Russia, 22-26 May 2018). Dedicated to recent advances and achievements in the fields of geomechanics and geotechnology, the main topics of the book include: - Physical and mechanical properties of fractured rock (laboratory testing and rock properties, field measurements and site investigations) - Geophysics in rock mechanics - Rock mass strength and failure - Nonlinear problems in rock mechanics - Effect of joint water on the behavior of rock foundation - Numerical modeling and back analysis - Mineral resources development: methods and rock mechanics problems - Rock mechanics and underground construction in mining, hydropower industry and civil engineering - Rock mechanics in petroleum engineering - Geodynamics and monitoring of rock mass behavior - Risks and hazards - Geomechanics of technogenic deposits Geomechanics and Geodynamics of Rock Masses will be of interest to researchers and professionals involved in the various branches of rock mechanics and rock engineering. EUROCK 2018, organized by the Saint Petersburg Mining University, is a continuation of the successful series of ISRM symposia in Europe, which began in 1992 in Chester, UK.