-Refer to the Figure

question 10

Multiple Choice

-Refer to the figure.Why is it more difficult to measure the distances to globular clusters (which contain RR Lyrae stars) than the distances to open clusters (which contain Cepheids) ?

• A)RR Lyrae stars are dimmer and harder to see.
• B)RR Lyrae stars pulsate so fast that they can't be measured.
• C)RR Lyrae stars are further away than Cepheids.
• D)RR Lyrae stars do not have a relationship between period and luminosity.

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Definitions:

1970s

A decade known for major economic changes, including shifts in political ideologies, oil crises, and the movement towards globalization.

1990s

A decade characterized by significant technological advancement, globalization, and cultural shifts, spanning from 1990 to 1999.

Trade Pact

is an agreement between two or more nations regarding the conditions of trade between them, often aiming to reduce barriers and increase trade.

Mexico

A country located in the southern part of North America, known for its rich cultural heritage, diverse landscapes, and as the 11th most populous country in the world.