What is a magnetic stripe used for?
The magnetic stripe card is embedded with codes that identify the user. More secure microchip technology is now replacing the magnetic stripe, especially in credit cards. Magnetic stripes are still used for driver's licenses, hotel rooms locks, and more.
How is magnetic striping evidence of plate tectonics?
List and Describe the Evidence for the Plate Tectonics Theory
- The Theory of Plate Tectonics. The basic theory of plate tectonics is that along seafloor spreading zones, the continents are separating from one another.
- Sea Floor Magnetism. Stripes of magnetic material in the seafloor provide strong evidence for tectonic theory. ...
- Fossil Evidence. ...
- Direct Measurement. ...
What is magnetic striping and polar reversal?
Magnetic striping and polar reversals Beginning in the 1950s, scientists, using magnetic instruments (magnetometers) adapted from airborne devices developed during World War II to detect submarines, began recognizing odd magnetic variations across the ocean floor.
What does magnetic stripe mean?
What does magnetic stripe mean? Here are all the possible meanings and translations of the word magnetic stripe. a short strip of magnetic tape attached to a credit card or debit card; it contains data that will tell a reading device who you are and what your account number is, etc.
What does magnetic striping prove?
The idea was born that lithosphere could be formed along these ridges, and the new material could push plates apart. The ultimate proof of this was the discovery of "magnetic stripes" on the seafloor later in the 1960s: the magnetic domains in oceanic rocks recorded reversal of Earth's magnetic field over time.
What do magnetic stripes tell us about seafloor spreading?
When the Earth's magnetic field reverses, a new stripe, with the new polarity, begins. Such magnetic patterns led to recognition of the occurrence of sea-floor spreading, and they remain some of the strongest evidence for the theory of plate tectonics.
Why are these magnetic stripes significant?
The Tendaho Graben's magnetic stripes are important because they're the first ones scientists have documented on land, Bridges said. Even more importantly, because these stripes have formed before the area becomes a water-covered basin, they may change the way researchers interpret the planet's oceans.
What is magnetic stripping?
noun. a strip of magnetic material on which information may be stored, as by an electromagnetic process, for automatic reading, decoding, or recognition by a device that detects magnetic variations on the strip: a credit card with a magnetic strip to prevent counterfeiting.
Why are magnetic patterns important evidence for plate tectonics?
Answer and Explanation: Magnetic patterns are important evidence for plate tectonics because we can use the magnetic signatures of rock to identify the movement of large sheets of the Earth's crust. Over time, the magnetic fields change.
What causes magnetic stripes on the seafloor quizlet?
The rock of the ocean floor contains iron. As molten material cooled and hardenend, the iron bits inside lined up in the direction of Earth's magnetic poles, creating a pattern of magnetized stripes.
What causes magnetic striping on the seafloor?
4:126:25Magnetic Striping and Seafloor Spreading - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe two strips of paper represents sections of oceanic crust that emerged from a mid-ocean ridge inMoreThe two strips of paper represents sections of oceanic crust that emerged from a mid-ocean ridge in the center as molten rock is erupted at the mid-ocean ridge it cools and solidifies preserving the
How are magnetic stripes on the seafloor created?
In 1963, they hypothesized that the magnetic striping was produced by repeated reversals of the Earth's magnetic field, not as earlier thought, by changes in intensity of the magnetic field or by other causes.
Why are the magnetic stripes on the seafloor parallel to and symmetrical across the mid-ocean ridge?
The specific magnetism of basalt rock is determined by the Earth's magnetic field when the magma is cooling. Scientists determined that the same process formed the perfectly symmetrical stripes on both side of a mid-ocean ridge. The continual process of seafloor spreading separated the stripes in an orderly pattern.
Who Viewed magnetic striping patterns on the ocean floor?
Vine and Matthews noticed there was a symmetrical pattern of magnetic stripes on either side of the mid ocean ridges. In addition when the basalts of the sea floor were dated, they were found to be the same age at similar distances away from the ridge on each side.
Who discovered magnetic striping?
It was during this time that Arthur Raff and Ronald Mason made a fascinating discovery. The two men were conducting a magnetic survey of the Pacific Ocean seafloor off the coast of Oregon.
How did Vine and Matthews explain the phenomenon of magnetic striping on the ocean floor?
4 a) How did Vine and Matthews explain the phenomenon of magnetic striping on the ocean floor? They stated that the magnetic striping was due to paleomagnetism. The striping revealed magnetic reversals in the Earth's poles as oceanic crust moved away from the mid-oceanic ridges by seafloor spreading.
What are the zebra stripes on the ocean floor proof of?
Magnetic 'zebra stripes' In the late 1960s, this phenomenon provided crucial evidence confirming that the seafloor was indeed spreading apart. This concept is at the core of the revolutionary theory of “plate tectonics.”
Why do rocks on the ocean floor form a pattern of magnetic stripes?
Why does the rock of the ocean floor have a pattern of magnetic stripes? The rock of the ocean floor contains iron. As molten material cooled and hardened, the iron bits inside lined up in the direction of Earth's magnetic poles, creating a pattern of magnetized stripes.
How do magnetic reversals provide evidence of the seafloor spreading hypothesis quizlet?
When the Earth's magnetic field reverses, the magnetized minerals align in the opposite direction. The record of magnetic reversals is carried away from each side of the spreading center of a mid-ocean ridge, showing that the molten rock is creating new lithosphere.
What does this pattern suggests about how the seafloor forms?
Distance from Oceanic Ridge (km) VGP Latitude (deg.) The stripes are symmetric across the Oceanic Ridge. They create a mirror image. It suggests that new seafloor is formed in the middle (at the Ridge) and some of the new seafloor moves to each side of the Ridge forming a symmetric pattern.
Who used the magnetic reversal method to date continental volcanic rocks?
Cox and his colleagues used this method to date continental volcanic rocks from around the world. They also measured the magnetic orientation of these same rocks, allowing them to assign ages to the Earth's recent magnetic reversals. In 1966, Vine and Matthews -- and also Morley working independently -- compared these known ages ...
How to determine the age of a rock?
The age of a rock can be determined ("dated") by measuring the total amount of potassium in the rock, the amount of the remaining radioactive potassium-40 that has not decayed, and the amount of argon-40.
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