Magnetic Striping and Seafloor Spreading

The discovery of magnetic stripes in oceanic crust and how this supports Wegener's Theory of Continental Drift or, as we now know it, Plate Tectonics! Presented by Ruth Kirk.

Made for Education Perfect Ltd. All imagery used with licence.

Music attribution:

[LuminousBlanc]

5 years later and still helping students! Insane video. Thank you!

[sloanhanberry]

using this to do my overdue online assignments, anyone else?

[mattapoisettpatton]

nice but why ar you blowing on the mcrophone you are too close

[LachyPlueckhahn]

briiliant video for my students thanks

[thunderness]

This is a fantastic video. Saved me a lot of relentless google searches trying to grasp the concept. Thanks :)

[downbeatgnu]

I’m doing a science homework about this video and it was easy to understand

[eddie_red]

Great vid
Anyone here because of science?

[Trashamations]

OK so pretty much I’ve been trying to figure out how magnetic stripes support the idea of sea floor spreading, and now I get it. I think. So pretty much Magnetic stiles are formed from magma from convection currents beneath the mantle. This then solidifies snd hardens, but records the Normal or Reverse Polarity. This helps support the idea of Sea floor spreading because it shows 1. The age of the rock is newer, so new material must currently be produced, and 2. Since the age is younger and the polarity (should) be closer to our polarity that means the sea floor has to be “created” . Please correct me if I’m wrong

[tylerlee]

move back from the microphone, you're super close to it

[mollydhewit]

this has rlly helped me with my science study, but yeah u r a bit close to the mic
but great video

[hamzafiyarhi]

You did not say what is the magnetic anomaly made of? were the rocks flipped or pointing north? what the magnetic strips made of?

[theskiviking]

Fossil records show validity to Wegeners theories as well, but again, more so after he died.

[alanrudolph]

So we have evidence frozen in the sea floor. What is the effect of these periodic reversal on earth. The magnetic field is a shield protecting earth from solar wind and cosmic rays. Is that protection supplied by the magnetic field periodically reduced or eliminated. How much, and for how long? What would be it’s impact on the existing life forms and would extinctions or large scale mutations be a result?

[melodyscamman]

Poses the questions, how are these stipes so evenly spaced along the ridge... Why not simply several volcanic cones?... and ... Does solar electromagnetic variations influence magnetic excursions and reversals, if so, how and to what extent?...

[dhanedelapena]

How can you determine the age of the seafloor in relation to its depth?

[ibrahimhashmi]

This is exactly the video i needed thank you

[cigxhang]

i feel like this background music is very reminiscent of red dead redemption 2

[gabylledoify]

I have to make a summary about this aghhhh earth science assingment

[maricarf]

Used this for my Grade 10 class. Thank you so much!

[verafleck]

So, where are the subduction zones? In my opinion, you will not find any. Because earth is growing.