What Kind of Spectra Did the Physicist Anders Jonas ÅNgström

question 41

Multiple Choice

What kind of spectra did the physicist Anders Jonas Ångström discover in his study of low-pressure gas discharge tubes?

• A) continuous
• B) discrete
• C) blackbody
• D) band
• E) dark-line

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Definitions:

Comparative Morphology

The branch of biology that studies the structure, form, and variation of organisms to determine relationships and evolutionary changes.

Morphological Divergence

The evolution of different forms, structures, or appearances in organisms as a result of adaptation to different environments or ecological niches.

Body Plans

The general physical layout of an organism, including the arrangement of organs and tissues; varies widely across the animal kingdom.

Geologic Time

A system of chronological measurement that relates stratigraphy to time, used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events in Earth’s history.