What Evidence in the Ocean Floor Is Indicative of Past

question 170

Multiple Choice

What evidence in the ocean floor is indicative of past magnetic reversals?

• A)Magnetic particles in basalt orient with the magnetic field in force at the time the oceanic lava cooled and hardened.
• B)Isotopic analysis of ocean core sediments help determine sea floor age and this can be used to infer past magnetism.
• C)The ocean floor is uniformly old,preserving Earth's 4.6 billion history.
• D)Mantle hot spots are always oriented to the magnetic field.

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Definitions:

Aggressive

Displaying or characterized by forceful actions or attitudes, often with the intent to dominate or control.

Empathy

The capacity to comprehend and empathize with another individual's emotions.

Commiseration

The expression of sympathy or sorrow for someone who is experiencing misfortune or grief.

Sympathy

Feelings of pity and sorrow for someone else's misfortune, often leading to offers of help or support.