Friday and Exam 1

Today we had our first exam. I was kind of nervous before I took it, because I didn't know what to expect. I ended up getting an 83 which is good for a college level exam!

We also did a lab today about Globorotalia menardii. This organism is looked like tiny popcorn under a microscope.

Facts learned today in class:

• The last ice age started 75,000 years ago and ended 10,000 years ago.
• Marine sediments are usually combinations of terrigenous sediments (come from land) and biogenous sediments (come from organisms).
• Sediments are historical records of oceanic processes.
• Hardbottom communities exist where there are strong currents and shallow water.
• Ice (glaciers) reflect heat coming from the sun. The ice on Earth is melting at an increased rate each year which gives scientists the idea that the Earth will greatly increase in temperature in the near future.
• For atmospheric circulation, the Coriolis effect causes the Northern Hemisphere air to turn right and the Southern Hemisphere air to turn left.