What Are the Van Allen Belts

question 81

Multiple Choice

What are the Van Allen belts?

• A) two doughnut-shaped regions of high-energy charged particles in Earth's magnetosphere
• B) oval-shaped region around each of Earth's magnetic poles where charged particles collide with ions in Earth's atmosphere
• C) inner and outer parts of the asteroid belt
• D) regions of high concentration of electrons and ionized atoms in Earth's upper atmosphere where radio waves are reflected toward the surface of Earth

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Definitions:

Coastal Zone

The interface between land and water, including the shoreline and adjacent land areas that directly affect or are affected by marine processes.

Lake Turnover

The process of a lake's water turning over from top to bottom, bringing oxygenated water from the surface to the bottom and nutrient-rich water from the bottom to the surface.

Oxygen

A reactive, colorless gas essential for respiration in most living organisms and a key component of the Earth's atmosphere.

Nutrients

Materials that supply the necessary nutrients for development and sustaining life.