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Rocks on the sea floor deposited by the mid ocean ridges often contain magnetite. As the magnetite cools and crystallizes, they align with the earth's magnetic poles with the north side of the crystal pointing north and the south side pointing south
The earth's magnetic poles(and magnetic field) are caused by actions within the the earth's liquid core. The liquid outer core moving around the solid inner core acts like an electromagnet which creates both the magnetic poles and magnetic field.
As the mid ocean ridges deposit new sea floor containing magnetite, the earth often switches polarity. The rocks on the sea floor align themselves to the poles at the time they form. So, the mid ocean ridges create new seafloor, pushing the older seafloor away. And then when the polarity switches the magnetite crystals in new seafloor align themselves in a direction opposite to the ones deposited before the switch. This causes parallel bands of magnetic rock forming on either side of the mid-oceanic ridges.
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When new rock is added to an oceanic ridge the magnetized strips on either side of the ridge are evidence of sea floor spreading. This is because the rocks on the two sides of the ridge?
are equal in width and polarity
What happens when you move roks away from the ocan ridge?
They increase in age and density, and decrease in temperature.
How did scientists discover that rocks farther away from the mid ocean ridge were older than the ones closer to the mid ocean ridge?
I don't believe that is possible to figure out
What would you expect to find if you measured the temperatures of rocks on the ocean floor at various distances from a mid-ocean ridge?
If one was measuring the temperatures of rocks on the seafloor, the hottest rocks would be located nearest to a mid ocean ridge. This is the location where the hot magma from the asthenosphere rises and is situated on either side of the ridge. The farther away the seafloor is from the central area of heat, the colder it is. This pattern is identical on both sides of a mid ocean ridge. However, if rocks are located near subduction zones or hot spots, they too would be hotter than the majority of the seafloor.
Is the Rock found at mid ocean ridge old or young?
yes young rocks are found at mid ocean ridges not old rocks.
Magnetometer data across a mid-ocean ridge shows alternating bands of?
As rocks cool past the curie point, they tend to become magnetized in the direction that the earths field is point at that time. The earths magnetic field has reversed many times in the past. The mid ocean ridge is a place where the plates are spreading apart and new hot material is welling up. This makes stripes of rocks that are magnetized in alternating directions.
How the age of the rocks on the ocean floor support the theory of the seafloor spreading?
the ages of the rocks become increasingly older in samples obtained farther from the ridge and the younger had just come out the ridge.
How ages of the rocks on the ocean floor supports the theory of seafloor spreading?
the ages of the rocks become increasingly older in samples obtained farther from the ridge and the younger had just come out the ridge.
When new rock is added to an oceanic ridge the magnetized strips on either side of the ridge are evidence of sea-floor spreading. This is because the rocks on the two sides of the ridge?
are equal in width and polarity
When new rock is added to an oceanic ridge the magnetized strips on either side of the ridge are evidence of sea floor spreading. This is because the rocks on the two sides of the ridge?
are equal in width and polarity
What happens when you move roks away from the ocan ridge?
They increase in age and density, and decrease in temperature.
Where are the yougest rocks found at the ocean ridge?
The youngest rock found in the ocean ridge is called a hot rocks. They are formed when oceanic plates diverge are separate from each other.
Do rocks spread away from the mid ocean ridge?
yes
Magnetic alignment of rocks in mid-ocean ridge?
alternating
Where are the oldest rocks in the ocean crust?
The oldest rocks are actually on land but in the ocean crust they would be the rocks closest to land. The mid-ocean ridge forms new rocks. They are usually located in the middle of the ocean.
Where are the youngest rocks in the Atlantic ocean?
At the mid-atlantic ridge, where the ocean floor is spreading.
How did scientists discover that rocks farther away from the mid ocean ridge were older than the ones closer to the mid ocean ridge?
I don't believe that is possible to figure out
