Activity 2 Magnetic Reversals And Sea Floor Striping Lab

These two things were the magnetic striping on the ocean floor and the age of seafloor rocks.

Activity 2 magnetic reversals and sea floor striping lab.

Following up the activity. The patterns reflect the creation and spreading of oceanic crust along the mid oceanic ridges. Displaying top 8 worksheets found for activity seafloor spreading. Assuming the distance to the farthest isochron is 300 km the spreading rate of the ridge was.

These surveys revealed a series of invisible magnetic stripes of normal and reversed polarity in the sea floor like that shown in the figure below. Midocean ridges and oceanic crust author. Magnetic reversals and sea floor striping f. Magnetic striping magnetic minerals are found in rocks.

300 km spreading rate. Basalt forming at the ridge crest picks up the existing magnetic polarity. Label the age of each isochron solid line at the bottom of the right hand side of the map using the information recorded on your ocean floor map. Demonstrate sea floor spreading.

Magnetic reversals and sea floor striping created date. Magnetic reversals and sea floor striping a key factor in establishing the theory of plate tectonics was recognition of past reversals in the earth s magnetic field and the mapping of normal and reverse magnetic striping on the ocean floor. Distanoe my km. Plates i activity 2.

Study maps of magnetic anomalies as measured over the oceanic ridges and look for the symmetrical patterns. Show how dates in hundreds of thousands or millions of years may be assigned to the sea floor stripes by comparison to land based.