An Astronomer Using a Refracting Telescope Sees an Image of Two

question 47

Multiple Choice

An astronomer using a refracting telescope sees an image of two gas clouds with identical shapes but displaced slightly from each other.One is composed of blue light and the other red light.The most likely explanation is:

• A) the Doppler effect.
• B) chromatic aberration.
• C) dust absorption.
• D) interstellar scattering.

Recognize the importance of environmental factors and community infrastructure in disease prevention.

Understand the historical development of public health initiatives and their impact on community health.

Analyze the role of government and non-governmental organizations in the advancement of public health.

Identify key figures and their contributions to public health and nursing.

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Definitions:

Unimodal Distribution

A type of distribution that has a single peak or mode, showing one predominant frequency of data points.

Negatively Skewed Distribution

A distribution shape where the tail is on the left side, indicating that the bulk of values are concentrated on the right.

Mode

The number that occurs the greatest number of times in a series of data.

Median

The middle value in a data set when the values are arranged in order, or average of the two middle values when there is an even number of observations.