Why Is the Molten Metallic Outer Core and the Magnetic

question 29

Multiple Choice

Why is the molten metallic outer core and the magnetic field important to life on Earth?

• A) If we did not have the molten core and the magnetic field, we would be bombarded by meteorites and we would not be able to hold the moon in orbit.
• B) If we did not have the molten core and the magnetic field, we would be bombarded by cosmic rays that would strip away our atmosphere.
• C) If we did not have the molten core and the magnetic field, the atmosphere would be very different with either too much ammonia and methane or too little oxygen and water.
• D) If we did not have the molten core and the magnetic field, the earth would not have plate tectonics and would be covered entirely by water.

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Definitions:

Plastic

Synthetic or semi-synthetic organic compounds that are malleable and so can be molded into solid objects of diverse shapes, widely used for a variety of applications.

Recycled

The method of gathering and treating substances that would normally be discarded as waste and transforming them into new items.

North America

A continent located entirely in the Northern Hemisphere and mostly in the Western Hemisphere, composed of countries like the United States, Canada, and Mexico among others.

Energy-Efficient

Describes technologies or processes that use less energy to perform the same function as conventional ones, reducing energy waste.