What Evidence Leads Astronomers to Conclude That Galaxies' Shapes May

question 6

Multiple Choice

What evidence leads astronomers to conclude that galaxies' shapes may be affected by the environment in which they are located?

• A)the different rates of star formation in spiral and elliptical galaxies
• B)the different amounts of gas found in spiral and elliptical galaxies
• C)the large range of sizes of elliptical galaxies found in clusters
• D)the different fractions of galaxy types in rich clusters and poor clusters

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Definitions:

Lubricating Film

A thin layer of liquid or other substances applied to surfaces to reduce friction and wear.

Smooth Surface

A type of physical surface that is even and untextured, often found in manufactured objects and natural formations.

Synovial Membrane

The soft tissue that lines the inner surface of synovial joints, producing synovial fluid for lubrication.

Lubricating Film

A thin layer of liquid or substance applied to surfaces to minimize friction and wear, commonly found in mechanical systems, joints, and tissues.