The First Function of Water Vapor in the Earth's Original

question 78

Multiple Choice

The first function of water vapor in the earth's original atmosphere was to:

• A)fall as rain and thus cool the earth's surface.
• B)create oxygen.
• C)increase the amount of carbon dioxide in the atmosphere.
• D)provide needed nourishment for primitive plants.
• E)block the solar wind.

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Definitions:

Alpha Particles

A type of ionizing radiation consisting of two protons and two neutrons, emitted from the nucleus of an atom.

Gold Foil

Thin sheets of gold used in scientific experiments, most famously in Rutherford's gold foil experiment which led to the discovery of the nucleus.

Sub-Atomic Particle

Particles smaller than atoms, including protons, neutrons, and electrons.

Atoms Produce Light

The phenomenon where atoms emit light when electrons jump from higher to lower energy levels, releasing photons.