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Why are magnet patterns important evidence for plate tectonics?
magnetic rocks on the ocean floor show that the Earths magnetic field has been frequently reversed forming new sea floor.
How do magnetic patterns in the rocks along the mid-ocean ridges explain seafloor spreading?
Magnetic patterns in the rocks along mid-ocean ridges reveal a symmetrical arrangement of magnetic stripes that record Earth's magnetic field reversals over time. As magma rises and solidifies at the ridge, it captures the Earth's magnetic orientation at that moment. This process occurs continuously, causing new crust to form and pushing older crust away from the ridge, which is the fundamental principle of seafloor spreading. The mirror-image patterns on either side of the ridge provide strong evidence for this ongoing geological process.
The patterns of iron particles found in sea floor rocks result from what?
The patterns of iron particles found in sea floor rocks result from changes in the Earth's magnetic field over time. As the molten rock solidifies into rock, the iron particles align with the Earth's magnetic field at that time, creating unique patterns that can be used to study the history of the Earth's magnetic field and plate tectonics.
Why are there are almost no extrusive ultra basic rocks in earths crust?
There are almost no extrusive rocks on the earths surface because they are all under the earths surface. They are mainly lower than the earths surface.
What element is abundant in earths crust and combines with oxygen to form rocks and minerals?
Silicon
What are the rocks that make up the earths crust?
the crust and the core
What does rocks in earths mantle contain a higher percentage of what than rocks in earths crust?
iron and magnesium
Why are magnet patterns important evidence for plate tectonics?
magnetic rocks on the ocean floor show that the Earths magnetic field has been frequently reversed forming new sea floor.
What materials are the earths crust made of?
it is made of rocks
What are two rocks that can be found in the earths crust?
Basalt and limestone.
How do magnetic patterns in the rocks along the mid-ocean ridges explain seafloor spreading?
Magnetic patterns in the rocks along mid-ocean ridges reveal a symmetrical arrangement of magnetic stripes that record Earth's magnetic field reversals over time. As magma rises and solidifies at the ridge, it captures the Earth's magnetic orientation at that moment. This process occurs continuously, causing new crust to form and pushing older crust away from the ridge, which is the fundamental principle of seafloor spreading. The mirror-image patterns on either side of the ridge provide strong evidence for this ongoing geological process.
The patterns of iron particles found in sea floor rocks result from what?
The patterns of iron particles found in sea floor rocks result from changes in the Earth's magnetic field over time. As the molten rock solidifies into rock, the iron particles align with the Earth's magnetic field at that time, creating unique patterns that can be used to study the history of the Earth's magnetic field and plate tectonics.
What exists on earths crust?
crief boy quez
How is the orientation of Earth's magnetism recorded in rocks on the ocean floor?
Earths magnetic orientation is locked into the rock when the rock cools
What makes close to 95 percent of the rocks of earths crust?
Silicates make up close to 95 percent of the rocks in the Earth's crust
Basic material of the Earth's crust?
The basic materials of the earths crust are; silicate rocks, primary granite, igneous, metamorphic, and sedimentary rocks.
What is the point in earths crust where the rocks first start to break?
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