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What do lava samples tell scientists about what has happened to the earth magnetic field over geologic time?
Wiki User
∙ 15y ago
The magnetic field periodically changes its orientation.
Wiki User
∙ 15y ago
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How do core samples help geologists?
Geologic core sampling serves a number of important purposes, such as giving scientists information regarding variations of climate. It also provides information about sedimentary composition, and various species.
Where do scientists get rock samples to discover earth's interior?
They recover rock samples from volcanic eruptions.
How did the scientists verify the remains of the romanovs to be authentic?
Scientists took DNA samples from the remains of the Romanov family and compared them to DNA samples from known living relatives to know they were authentic.
What are facts scientists have learned about earth's climate from core samples?
uh.....
How do core samples help scientists learn about earth's history?
you gusy
Measurement of magnetic susceptibility using Faraday method?
it is a method for measuring the magnetic susceptibility of a samples using special tools such as vibrating magnetometer
Scientists use radioactivity in rock samples to measure?
The exact age of the rock.
Is chalcopyrite and hematite and magnetite and pyrite magnetic?
some of our samples of pyrite are paramagnetic
What tools were used to prove seafloor spreading?
Tools such as sonar mapping, geologic sampling, and paleomagnetism studies were used to provide evidence for seafloor spreading. Sonar mapping allowed for the creation of detailed maps of the ocean floor, revealing features such as mid-ocean ridges and deep-sea trenches. Geologic sampling involved collecting rock samples from the ocean floor to study their age and composition. Paleomagnetism studies focused on analyzing the alignment of magnetic minerals in rocks, providing evidence of past changes in Earth's magnetic field that support the idea of seafloor spreading.
What are pieces of evidence of sea floor spreading?
molten material,drilling samples, and magnetic stripes
What are three things scientists collect?
1. data 2. samples from experiments 3. ?
What are three kinds of evidence scientists have found to support ocean floor spreading?
1. Paleomagnetism. 2.(Thickness of the beds) Samples of the deep ocean floor show that basaltic oceanic crust and overlying sediment become progressively younger as the mid-ocean ridge is approached, and the sediment cover is thinner near the ridge. 2. (Age of the sea-floor) The rock making up the ocean floor is considerably younger than the continents, with no samples found over 200 million years old, as contrasted with maximum ages of over 3 billion years for the continental rocks. This confirms that older ocean crust has been reabsorbed in ocean trench systems. 3. (Geologic Activities) Study of the fracture zones that offset the sections of the ridge.
