Directions: Apply the Knowledge You Have Gained from Chapter 11

question 9

Multiple Choice

Directions: Apply the knowledge you have gained from Chapter 11 to select the best answer to the questions about the following reading passages.
In 1863 Secchi studied 4,000 different star patterns and concluded that every star in the sky could be categorized into one of five classes based on unique patterns. At the time, such a classification was revolutionary. It formed a new understanding of the universe. Today, Secchi's system of classification is considered out of date, and a more detailed classification system has emerged, grouping stars into seven classes based on surface temperature, color, and size.
What word signals a time transition?

• A) studied
• B) classification
• C) today
• D) emerged

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Definitions:

SQUID

A device used in physics and medical imaging that measures extremely subtle magnetic fields, short for Superconducting Quantum Interference Device.

Magnetic Fields

Invisible fields that exert a force on particles that are electrically charged or are magnetically polarized, extending from magnetic objects.

Neurons

Dedicated cells in the nervous system whose function is to communicate information to other nerve cells, muscle tissue, or glands.

Endocrine Glands

Glands of the endocrine system that release hormones directly into the bloodstream to regulate various bodily functions.