In less than 25 years, the continent of Australia moved 4.9 feet thanks to plate tectonics. The presentation introduces the idea of the layers of the earth as well as plate tectonics. It goes into why the plates move and where we believe...

One slide details the features of Space Shuttle Discovery in graphic form. Another shows a faulty hydrogen fuel sensor. The final slide is a picture of the explosion of Space Shuttle Challenger and the ill-fated crew. If you wanted to...