PlateTectonicsWorksheet#3L1
1
MiSP Plate Tectonics Worksheet #3 – Assessment L1
Name ___________________________________ Date_____________
L1-3
Base your answers to questions 1 – 3 on the diagram below which shows an enlargement of
the mid-Atlantic ridge and surrounding area in its position between the continents.
Magnetic polarity bands are shown. You will need a ruler and calculator for question 3.
1. What would be the age in millions of years of an ocean floor rock found 20 kilometers
west of the ocean ridge?
___________________ million years
2. ______
Multiple choice -
From point A to point B, what happens to the relative age of
the rocks?
A. continuously decrease from A to B
B. continuously increase from A to B
C. decreases from A to the mid-Atlantic ridge and then increases to B
D. increases from A to the mid-Atlantic ridge and then decreases to B
