It does not store any personal data.My first thought, in response to the prompt, was that "Yeah of course they should be taken seriously, it would be rude and inconsiderate to disregard an idea just because all the dots aren't connected." But then playing Devil's Advocate, I stopped and thought about how important it is that we don't take every idea seriously like that.
The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other.
The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. the discovery of ocean trenches where large areas of the ocean floor are pulled downwards and destroyed.Also, the ocean crust gets older with distance from the mid-ocean ridge This striped pattern, which is mirrored exactly on either side of a mid-oceanic ridge, suggests that the ocean crust is slowly spreading away from the boundary.
Alfred wegener theory of plate tectonics series#
At regular intervals the polarity of the Earth reverses this results in a series of magnetic stripes with the sea-floor rocks aligned alternately towards north and south poles. Iron particles in lava are aligned with the Earth’s magnetic field. palaeomagnetism – evidence of sea-floor spreading is gained from an examination of the polarity of the rocks that make up the ocean floor.As plates move apart magma rises along the constructive plate margin forming new land along the boundary of the plates A mid– ocean ridge or mid– oceanic ridge is an underwater mountain range, formed by plate tectonics. the discovery of mid-oceanic ridges discovered as the result of ocean floor mapping.In the second half of the twentieth century, more evidence emerged that supported the theory of continental drift. The video below might help you remember the evidence to support Wegener’s theory. It is used as evidence that these continents must have been joined together around 250 million years ago. the plant Glossopteris is a fern that has been found in Africa, Antarctica, Australia and South America.
fossil remains of mesosaurus, a prehistoric reptile, are found in both southern Africa and South America.fossil brachiopods found in some Indian limestones are comparable with similar fossils found in Australia.geology in northern Scotland closely match those found in eastern Canada, indicating that they were laid down in the same position.These deposits must have been formed together and subsequently moved evidence for a late-Carboniferous glaciation exists in deposits in India, South America and Antarctica.the ‘fit’ of the coastlines of South America and Africa.The early evidence of continental drift claimed by Wegener includes:
0 kommentar(er)
