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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.
What else can I help you with?
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
How did scientists discover that rocks farther away from the mid ocean ridge were older than the ones closer to the mid ocean ridge?
Scientists discovered that rocks farther away from the mid-ocean ridge were older than those closer to it through radiometric dating of the rocks. By analyzing the age of the rocks using isotopes with known half-lives, they were able to determine that the rocks get progressively older as you move away from the ridge due to the process of seafloor spreading.
Is the Rock found at mid ocean ridge old or young?
yes young rocks are found at mid ocean ridges not old rocks.
What happens when you move roks away from the ocan ridge?
When rocks are moved away from the ocean ridge, the gap created is eventually filled by magma rising up from the mantle below. This process is known as seafloor spreading, where new oceanic crust is formed as magma solidifies and creates a new ocean floor. Over time, this continuous spreading and creation of new oceanic crust causes the ocean basin to widen.
What color is a mid ocean ridge?
the boundary ofthemid ocean ridge is a divergent boundary
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 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.
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.
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
Magnetic alignment of rocks in mid-ocean ridge?
alternating
Do rocks spread away from the mid ocean ridge?
yes
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 yougest rocks found at the ocean ridge?
The youngest rocks are found at the mid-ocean ridge where tectonic plates are moving away from each other. As the plates diverge, magma rises to the surface, solidifies, and forms new oceanic crust. This process results in the formation of young rocks at the mid-ocean ridge.
How did scientists discover that rocks farther away from the mid ocean ridge were older than the ones closer to the mid ocean ridge?
Scientists discovered that rocks farther away from the mid-ocean ridge were older than those closer to it through radiometric dating of the rocks. By analyzing the age of the rocks using isotopes with known half-lives, they were able to determine that the rocks get progressively older as you move away from the ridge due to the process of seafloor spreading.
How are ocean-floor rocks and sediments evidence of seafloor spreading?
Ocean-floor rocks near mid-ocean ridges show a symmetrical pattern of magnetized stripes parallel to the ridge axis. These stripes result from periodic reversals in Earth's magnetic field and provide evidence of seafloor spreading. Sediments on the ocean floor also show younger ages near the ridges, supporting the idea of seafloor spreading.
Where are the youngest rocks in the Atlantic ocean?
The youngest rocks in the Atlantic Ocean are found along the mid-ocean ridge system, where new oceanic crust is formed through volcanic activity. This process, known as seafloor spreading, occurs along underwater mountain ranges, such as the Mid-Atlantic Ridge. As molten rock cools and solidifies at the ridge, it creates new oceanic crust, making this region home to some of the youngest rocks in the Atlantic.
What is the relationship between the age of rocks on the ocean floor and the distance from the Mid-Atlantic ridge?
The farther away the rocks are, the older they are. When the lava bubbles up from the ridge, the tectonic plates move outward. As the process repeates itself and new lava comes up, the rocks are pushed farther and father away. As a result, the closest rocks are the newest, and the farthest rocks are the oldest!
