Which of the Following Statements About Apparent and Absolute Magnitudes

question 6

Multiple Choice

Which of the following statements about apparent and absolute magnitudes is true?

• A)A star with an apparent magnitude of 1 appears brighter than a star with an apparent magnitude of 2.
• B)The absolute magnitude of a star is another measure of its luminosity.
• C)A star's absolute magnitude is the apparent magnitude it would have if it were at a distance of 10 parsecs from Earth.
• D)The magnitude system that we use now is based on a system used by the ancient Greeks over 2,000 years ago that classified stars by how bright they appeared.
• E)All of the above are true.

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Definitions:

Reactants

Compounds available at the start of a chemical reaction, which are utilized to form the final products.

Equilibrium Constant

A numerical value that represents the ratio of concentrations of products to reactants at equilibrium in a chemical reaction.

Reaction

A process in which substances known as reactants undergo chemical change, producing new substances called products.