Globular Clusters Can Be Used to Estimate the Distance to Galaxies

question 22

Multiple Choice

Globular clusters can be used to estimate the distance to galaxies by measuring the clusters' ____.

• A) angular diameter
• B) mass
• C) orbital speed
• D) age
• E) recession velocity

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Definitions:

One-To-Many Line

A representation in database schema diagrams indicating that one record in a table is associated with multiple records in another table.

Standard Module

In programming, a code module that contains general procedures and functions that can be referenced from anywhere within the application.

Function Procedure

A block of code within programming that performs a specific task and can return a value, used to modularize and simplify coding.

Query

A request for information from a database, specifying criteria to select and retrieve data.