How do magnetic patterns in the rocks along the mid-oceanic ridges explain seafloor spreading? A.

As oceanic crust sank beneath continental crust, the cooling rocks aligned with the earth's magnetic field, which periodically reversed. This periodic pattern was seen on one side of a mid-oceanic ridge.

B.

As new crust was added to the seafloor, the cooling rocks aligned with the earth's magnetic field, which periodically reversed. This periodic pattern was seen on one side of a mid-oceanic ridge.

C.

As new crust was added to the seafloor, the cooling rocks aligned with the earth's magnetic field, which periodically reversed. This periodic pattern was symmetrical on both sides of a mid-oceanic ridge.

D.

As oceanic crust sank beneath other oceanic crust, the cooling rocks aligned with the earth's magnetic field, which periodically reversed. This periodic pattern was seen on one side of a mid-oceanic ridge.

Answers

Answer 1

Answer: The answer is C. Because you see the pattern on both sides which shows that it must be spreading from the middle out as new crust rises.

Answer 2

Answer:

Answer: C.

As new crust was added to the seafloor, the cooling rocks aligned with the earth's magnetic field, which periodically reversed. This periodic pattern was symmetrical on both sides of a mid-oceanic ridge.

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Answers

The difference in arrival times of P and S waves increasese at seismograph recording stations because the farther a seismic recording station is from the earthquake epicenter.

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What happened to the difference in the arrival time between the P wave and S wave as the distance from the earthquake increases?

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This difference increases because p-waves travel faster than s-waves. Therefore, if a seismograph is far from the epicenter, readings of the p-waves will arrive first, but since those waves travel faster than s-waves, it might be a bit longer before readings of the s-waves appear.

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