Exam #1B (PLEASE READ INSTRUCTIONS BEFORE STARTING THIS EXAM)

THIS IS THE PLATE TECTONICS PORTION OF YOUR EXAM

READ THIS before you start this portion of your exam:

• This portion of the exam is timed. You have 45 minutes to complete this part of the test.
• Points for each question are indicated on the questions (or sections) below, totaling 20 for this part of the exam (half your score).
• Every time you do a calculation, SHOW HOW YOU SOLVED THE PROBLEM (this is not only worth points toward your score, but you can earn partial credit even if you get the wrong answer if you've done part of the problem correctly).
• Include units with your answers as needed (this is worth points toward your score).
• Conversions you might need:
  • 100,000 cm = 1 km
  • 1,000,000 mm = 1 km
  • 10 mm = 1 cm