CHAPTER 9THE FAMILY OF
1. The hydrogen lines in spectral type A
a. are most narrow for supergiants.
b. are most narrow for main sequence
c. can not be used to estimate the
luminosity of the star.
d. are very weak and dif
astronomy practice test ch 9
Use the following chart to answer the questions below:
(sec of arc)
VIREO Lab: The Classification of Stellar Spectra
Objectives: Upon the completion of this lab the student will be able to:
Understand how an absorption spectrum is created
Understand how an absorption spectrum can be used to discover the
composition of an
Neuron and Its Parts
Neuron: Individual nerve cell; 100 billion in brain
Soma: Cell body; body of the neuron. Receives messages and sends messages
Axon: Fiber that carries information away from the cell body of a neuron
Introducing Psychology and Research Methods
What Is Psychology?
Logos: Knowledge or study
Definition: The scientific study of behavior and mental processes
Behavior: Overt; i. e. , can be directly observed (crying)
CHAPTER 1: Introduction to Physical Geography
Summary of the Chapter
This chapter examines the nature, history, and future of Physical Geography. Opening
topics establish working definitions for Geography, Human Geography, Physical
What is Developmental Psychology?
Developmental psychology is the branch of psychology that studies how people grow
and change over the course of a lifetime. Before you begin a more in depth study of
this subject, you need to understand exactly what 'deve