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ok so...
over time, the magnetic poles kept changing directions. for example ur compass wuld suddenly turn the opposite direction. there was this type of rock(forgot the name) that always points the direction of the magnetic pole. this type of rock erupts from the bottom of the ocean floor. scientists found that the rocks at the ocean floor would change direction in order. like, one section of the rock would be pointing north, and one section would be pointing south, vice versa. they knew that since the rocks change directions, new ocean floor was forming and were pushing the continents away from each other. the sea was alos spreading.
i used this 4 my hw
u better not go 2 my middle school(chaparral)
What else can I help you with?
How does magnetic stripes prove seafloor spreading?
Magnetic stripes on the seafloor provide evidence for seafloor spreading because they show alternating bands of normal and reversed polarity along mid-ocean ridges. These stripes form as new oceanic crust is created at mid-ocean ridges, with the Earth's magnetic field aligning minerals in the crust in the direction of the prevailing polarity at the time of its formation. By collecting and analyzing samples from the ocean floor, scientists can observe these magnetic patterns and confirm the process of seafloor spreading over geologic time scales.
What is magnetic striping evidence of?
Magnetic reversals and sea floor spreading.
Rock on the ocean floor provided the final proof of sea floor spreading with a record of?
magnetic stripes on either side of the Mid-Atlantic ridge. These parallel bands of alternating polarity were mirrored on each side of the ridge, providing evidence for seafloor spreading and the movement of tectonic plates.
Which aspect of magnetic reversal provides evidence of continental drift?
Periodically, the magnetic field of the earth reverses polarity. The direction of the magnetic field is recorded in the magnetic properties of rocks when they are erupted. Rocks are being continuously added at sea floor spreading regions, and thus the magnetic reversals are recorded as pairs of parallel 'stripes' alongside the mid ocean spreading ridge.
Do the magnetic stripes on the ocean floor reveal the switching of the poles?
Yes, the magnetic stripes on the ocean floor provide evidence of the Earth's magnetic pole reversals. As magma rises and solidifies at mid-ocean ridges, iron-rich minerals align with the Earth's magnetic field. When the magnetic field reverses, new stripes form parallel to the ridge, creating a record of past magnetic orientations. This pattern of symmetrical stripes on either side of the ridge supports the theory of plate tectonics and the history of geomagnetic reversals.
How magnetic reversals provide evidence for sea floor spreading?
Because of the stripes at the sea floor which are magnetic minerals
How does magnetic reversals provide evidence for seafloor spreading?
Because of the stripes at the sea floor which are magnetic minerals
What three forms of evidence do geologists have of sea floor spreading?
Magnetic Stripes, Drilling Samples, and Molten Material.
Bands of magnetic material in the sea floor that have opposite poles or exhibit magnetic reversal can provide evidence for sea floor spreading true or false?
True. Bands of magnetic material in the sea floor that have opposite poles or exhibit magnetic reversal provide evidence for sea floor spreading. This is because as new oceanic crust forms at mid-ocean ridges, Earth's magnetic field periodically reverses, creating magnetic stripes on the ocean floor that align with the direction of the magnetic field at that time.
What geologic discovery in the 1960's provided the scientific evidence to verify the occurrence of continental drift?
The discovery was the presence of magnetic stripes on the ocean floor which indicated that the seafloor was spreading, solidifying from melt, and the magnetic minerals contained therein were aligning themselves with the magnetic alignment of the Earth at the time of their solidification.
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 :)
Strips of alternating magnetic polarities found in rocks in the ocean basins?
They are known as magnetic stripes and are formed as new sea floor is created at mid-ocean ridges. When molten rock solidifies, it preserves the direction of Earth's magnetic field at that time, creating a record of magnetic reversals in the oceanic crust. The alternating stripes of normal and reversed polarity provide evidence for seafloor spreading and plate tectonics.
Magnetic stripes on the seafloor are caused in part by?
symmetrical spreading of the ocean floor at mid-ocean ridges, where molten material rises to create new seafloor. As this material cools and solidifies, it records the Earth's magnetic field at the time, creating magnetic stripes on the seafloor. This phenomenon provides evidence for seafloor spreading and plate tectonics.
True or false magnetic stripes on the ocean floor are places where oceanic crust sinks back to the mantle?
True. Magnetic stripes on the ocean floor are created by alternating bands of magnetic polarities in the oceanic crust. These stripes are evidence of seafloor spreading where new crust is formed at mid-ocean ridges, pushing older crust away. Subduction zones are where older crust sinks back into the mantle.
What is magnetic striping evidence of?
Magnetic reversals and sea floor spreading.
What Magnetic striping evidence of?
Magnetic reversals and sea floor spreading.
