What is the relationship between seafloor spreading and reversals in Earth's magnetic field
What will be an ideal response?
As seafloor spreads, magma emerges at the surface and magnetic particles in the lava orient with the magnetic field in force at the time. Over time, a magnetic record is preserve in the seafloor. Using isotopic methods, a chronology of these reversals can be established.
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Compressions and rarefactions of sound waves normally travel
A. in opposite directions. B. at different speeds. C. at reduced frequencies. D. none of the above
The very common carbonate mineral shown here that is a clear to light-gray color is
A. hematite. B. pyrite. C. calcite. D. dolomite. E. magnetite.
There are ____ limits to population growth in nature.
A. never B. sometimes C. always D. low E. high
As the temperature of a body increases, it will radiate energy at ____ wavelengths
a. erratic b. longer c. shorter d. latent