A Researcher Does a Study Looking at an Intervention Designed

question 32

Multiple Choice

A researcher does a study looking at an intervention designed to increase interest in Science among Girls. She assigns 30 girls to the intervention and 30 girls to a no intervention group. In this study, she studies only girls. Girls in this study represent:

• A) the independent variable
• B) the dependent variable
• C) a constant
• D) a categorical variable

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Definitions:

Geothermal Energy

Renewable energy generated from the heat stored beneath the Earth's surface, used for heating and electricity production.

Earth's Mantle

The layer of the Earth between the crust and the core, composed of silicate rocks that are rich in magnesium and iron.

Fuel Cell

A device that converts the chemical energy from a fuel into electricity through a chemical reaction with oxygen or another oxidizing agent, often hydrogen-based.

Conversion Efficiencies

The ratio of useful energy output to total energy input in a system, measuring how effectively energy resources are converted and used.