"Magnetic Polarity: the North and South magnetic poles have switched positions throughout Earth's history... the record of magnetic polarity in the rocks of the ocean floor provided unequivical support for the seafloor spreading hypothesis." - as quoted in chp. 4, pg. 94, from the textbook "The Good Earth: Introduction To Earth Science"
Granitic strips in the ocean floor ... Novanet
Because of sea floor spreading
Because of sea floor spreading
One key piece of support that was not included in the initial support for Harry Hess's hypothesis of seafloor spreading was the mechanism of plate tectonics. This idea was developed and integrated into the theory of seafloor spreading by geologists like Robert Dietz and J. Tuzo Wilson at a later stage.
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dumb question. don't want to write it all
If your data does not support your hypothesis, it means that there is not enough evidence to conclude that your hypothesis is true. In such cases, you may need to reconsider your hypothesis, collect additional data, or revise your experimental approach. It is important to acknowledge and learn from results that do not support your initial hypothesis in order to refine your research and understanding.
An experiment might not support a hypothesis even if the hypothesis is correct because if the conclusion
If your hypothesis is totally incorrect then it is quite likely that the data will not support it.
One aspect not included in the support for Harry Hess's hypothesis of sea floor spreading was the lack of direct evidence of the mechanisms driving the process, such as mantle convection. Additionally, the age and magnetic anomalies of the ocean floor were not fully understood at the time, which limited the initial acceptance of his ideas. Furthermore, the concept of plate tectonics, which later provided a comprehensive framework for understanding sea floor spreading, was not yet developed during Hess's proposal in the early 1960s.
One key piece of evidence that was not initially used in support of the continental drift hypothesis was a mechanism explaining how continents could move. It wasn't until the discovery of plate tectonics and the development of the theory of seafloor spreading that a mechanism was found to explain how continents drift.
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