April 27, 2011 Question #1 How do you find out what is inside a present before you open it? What are your techniques? How far down have we actually gone do you think? On this scale- Only the width of a fingernail! April 27, 2011 Question #2 Have you seen the movie "The Core"? Fiction or Non-Fiction, what do you think? INDIRECT OBSERVATION: Compass Activity 1) What direction does the red arrow point? 2) What happens when you put the compass near the iron filings? 3) Where does Iron come from? 4) What does a compass indirectly tell us about the Earth? April 27, 2011 1) What direction does the red arrow point? April 27, 2011 INDIRECT OBSERVATION: Compass Activity 1) What direction does the red arrow point? 2) What happens when you put the compass near the iron filings? 3) Where does Iron come from? 4) What does a compass indirectly tell us about the Earth? April 27, 2011 April 27, 2011 http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/magearth.html http://www-spof.gsfc.nasa.gov/Education/Intro.html April 27, 2011 http://www.nasa.gov/vision/earth/lookingatearth/ 29dec_magneticfield.html April 27, 2011