The Hubble Law, Representing Observations of Distant Objects in the Universe

question 18

Multiple Choice

The Hubble law, representing observations of distant objects in the universe, relates which two parameters?

• A) distance to a distant object and the redshift of its light
• B) mass of an object and its luminosity
• C) luminosity and position of stars in the galaxy
• D) mass of a distant object and its recession velocity

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Definitions:

Supernatant

The liquid portion of a substance from which solids have settled to the bottom, as with a urine specimen after centrifugation.

Urine

A liquid by-product of metabolism in humans and many animals, expelled from the body.

Centrifuge

A machine that uses centrifugal force to separate particles or substances of different densities within a liquid.

Protozoal Infection

A type of infection caused by protozoa, single-celled organisms that can either be free-living or parasitic.