If You Measured the Distances and Recessional Velocities for a Sample

question 74

Multiple Choice

If you measured the distances and recessional velocities for a sample of galaxies and plotted the data to get the figure below, what value would you derive for the Hubble constant?

• A) 10 km/s/Mpc
• B) 50 km/s/Mpc
• C) 70 km/s/Mpc
• D) 100 km/s/Mpc
• E) 500 km/s/Mpc

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Definitions:

Rain Shadow Effect

A meteorological phenomenon where mountains block the passage of rain-producing weather systems, creating a dry area on the leeward side.

Vegetation

Plants in general, or the plant life of a particular area, ecosystem, or period.

Windward Side

The side of a mountain or island that faces the direction from which the wind is coming, typically receiving more rain and having more lush vegetation than the leeward side.

Leeward Side

The side of an island, mountain, or other landmass that is sheltered from the prevailing wind, typically receiving less rain and having different climatic conditions than the windward side.