Igneous Rocks Are Formed

question 21

Multiple Choice

Igneous rocks are formed

• A) through the freezing or crystallization of a melt.
• B) by changing existing rock by the application of heat and pressure.
• C) by depositing loose material into layers.
• D) by chemically precipitating from solutions.

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Definitions:

Quasi-experimental

A research design that attempts to establish cause-and-effect relationships but lacks random assignment of participants to control or experimental groups.

Correlational Investigations

Research methods that explore the relationship or association between two or more variables without determining causality.

Experiments

Controlled procedures carried out to investigate relationships between variables, often to test a hypothesis.

Quasi Experimental

A research design that attempts to establish a cause-and-effect relationship but lacks random assignment of participants to conditions.