vargas island, summer, 2010

Thursday, April 26, 2012

Quiz next block: note correction

first, a correction of typo:  the core of the earth.  I mentioned magnesium in the outer core.  this is an error. there is no magnesium

According to many sources, the core has sulfur and iron and nickel.
      outer core is liquid iron and nickel
      inner core is solid iron (and nickel too but this is not noted in provincial exams...)

Here's a geophysics site with more details.

Quiz next period on:

parts of the earth:  name the layers and write a short description of their properties
types of plate boundaries:  divergence, convergence, transform
hotspot movement

We will examine rocks next period too.