How Do Astronomers Believe an Irregular Galaxy Forms

question 43

Multiple Choice

How do astronomers believe an irregular galaxy forms?

• A)Several regular galaxies of different sizes merge.
• B)They form when an elliptical and a spiral galaxy merge.
• C)They are regular galaxies that are distorted by the gravity field of a large nearby galaxy.
• D)They are two or more galaxies that have not completed their merger.
• E)They are young galaxies that have not yet developed a more regular form.

Identify the roles of independent and dependent variables in experiments.

Comprehend the implications of correlation values and their limitations.

Recognize the importance of reducing bias in research, including experimenter bias and sample bias.

Understand the concepts of control groups, experimental groups, and the significance of randomization in research.

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Definitions:

Workers

Individuals engaged in some form of employment, contributing labor or expertise in exchange for compensation.

Expectancy Theory

A motivational theory suggesting that individuals decide how to behave based on their expectations that the effort will lead to a certain outcome and the value of that outcome to them.

Research Follow-up

The process of collecting additional information or data after an initial investigation to clarify results or answer new questions.

Practical

Focused on or concerned with the actual doing or use of something rather than with theory and ideas.