You Observe a Distant Galaxy

question 98

Multiple Choice

You observe a distant galaxy.You find that a spectral line normally found in the visible part of the spectrum is shifted toward the infrared.What do you conclude?

• A)The galaxy is moving away from you.
• B)The galaxy is moving toward you.
• C)The galaxy has very weak gravity.
• D)The galaxy is made purely of hydrogen.
• E)The composition of the galaxy is changing.

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Definitions:

Industrially Advanced Nations

Countries that have highly developed industries, technological infrastructure, and a high standard of living.

LDCs

Less Developed Countries; nations with low levels of economic development, often measured by gross domestic product (GDP) per capita, industrialization, and living standards.

Economic Development

The process of improving economic well-being and quality of life through growth and restructuring of an economy's sectors.

Birth Rate

The number of live births per thousand people in a population over a given period of time.