Monday February 11, 2013 (Lab – Mixed Rocks)

The Launch Pad Monday, 2/11/13 Identify the rocks in these pictures. bituminous coal fossiliferous limestone granite gneisspumice shale marblebasaltsandstoneanthracite coalslate obsidian chlorite schist conglomeratebrecciaphyllite

Announcements Happy Clean Out Your Computer Day!

Announcements I will be available after school from 4:45 until 5:15.

Assignment Currently Open Summative or Formative? Date IssuedDate Due Date Into GradeSpeed Final Day Quiz 17S22/1 FRIDAY WS – Metamorphic Rocks F112/62/8 FRIDAY Lab – Metamorphic Rocks F122/72/9 FRIDAY Quiz 18S32/8 2/11 2/25

Recent Events in Science New Evidence Suggests Comet or Asteroid Impact Was Last Straw for Dinosaurs Read All About It! htm The demise of the dinosaurs is the world's ultimate whodunit. Was it a comet or asteroid impact? Volcanic eruptions? Climate change? In an attempt to resolve the issue, scientists at the Berkeley Geochronology Center (BGC), the University of California, Berkeley, and universities in the Netherlands and the United Kingdom have now determined the most precise dates yet for the dinosaur extinction 66 million years ago and for the well-known impact that occurred around the same time. The dates are so close, the researchers say, that they now believe the comet or asteroid, if not wholly responsible for the global extinction, at least dealt the dinosaurs their death blow.

Lab Mixed Rocks