How Does the Ocean Floor Preserve Evidence of Past Magnetic

question 91

Multiple Choice

How does the ocean floor preserve evidence 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 the Earth's 4.6 billion history.
• D) Mantle hot spots are always oriented to the magnetic field.

---

Definitions:

Precious Metals

Metals of high economic value due to their rarity, durability, and use in jewelry, currency, and industrial applications; includes gold, silver, platinum, and palladium.

Passage to the Pacific

Refers to the quest for a navigable route through or around North America to facilitate trade and exploration from the Atlantic to the Pacific Ocean.

Protestant Reformation

A major movement in the 16th century that led to the division of Christianity into Catholicism and Protestantism, initiated by figures like Martin Luther.

Church of England

The primary state church in England, also known as Anglican Church, which was established in the 16th century by King Henry VIII.