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Rocks have a north and south pole. The sea floor was discovered to have different magnetic poles on cracks in the ocean floor.
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∙ 12y ago
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Why is the ocean floor expanding?
Because of sea-floor spreading caused by the mid-ridge
What are three types of evidence provided support for sea-floor spreading?
Seismic Waves, Rock formations, and the shapes of the continents over time
What three types of evidence provide supporting of sea floor spreading?
Seismic Waves, Rock formations, and the shapes of the continents over time
What are three types of evidence from the sea floor that prove the existence tectonic plates?
Earthquakes along the seafloor, tsunamis, and changed water movements.
How magnetic reversals provide evidence for sea floor spreading?
Because of the stripes at the sea floor which are magnetic minerals
What three types of evidence provided support of the theory of sea-floor spreading?
three are : eruptions of molten material magnetic stripes in the rock of the ocean floor and the ages of the rocks themselves :)
What three types of evidence provided support of the theory of sea floor spreading?
three are : eruptions of molten material magnetic stripes in the rock of the ocean floor and the ages of the rocks themselves :)
What is sea floor spreading and what evidence do we have to prove it is happening?
Magnetic minerals on the ocean floor.
What Three types of evidence from the sea floor that prove earths tectonic plates move?
Earthquakes along the seafloor, tsunamis, and changed water movements.
What is used as evidence for sea floor spreading?
Magnetic reversals
Used as evidence for sea-floor spreading?
magnetic reversal
What is one piece of evidence that supports sea floor spreading?
Formation of new ocean/sea floor at the edges or divergence/separation.
