Most Meteoroids-- Rocks Moving Through Outer Space--Have Been Moving for Billions

question 5

Multiple Choice

Most meteoroids-- rocks moving through outer space--have been moving for billions of years. What, if anything, keeps them moving and why?

• A) According to Newton's law of motion, their own acceleration keeps them moving.
• B) According to Newton's law of gravity, the force of gravity keeps them moving.
• C) According to the law of inertia, nothing is needed to keep them moving.
• D) According to current theories about the creation of the universe, the big bang keeps them moving.
• E) According to Newton's law of gravity, nothing is needed to keep them moving.

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Definitions:

Oxygen Molecules

Diatomic molecules consisting of two oxygen atoms bonded together, essential for the process of cellular respiration.

Electron Transport Chain

A series of complexes that transfer electrons from electron donors to electron acceptors via redox reactions, and couples this electron transfer with the transfer of protons (H+ ions) across a membrane.

Glycolysis

The metabolic pathway that breaks down glucose to pyruvate, generating energy and pyruvate molecules, occurring in the cytoplasm of cells.

Eukaryotes

Organisms whose cells contain a nucleus and other membrane-bound organelles, including animals, plants, fungi, and protists.