Master scientific reasoning and analytical skills with 90+ practice passages covering all ACT Science question types and content areas.
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The ACT Science section measures your scientific reasoning and analytical skills rather than your ability to memorize specific facts. It tests how well you can interpret, analyze, and evaluate scientific information presented in various formats.
Focuses on graphs and tables; requires pure data analysis
Describes experiments; focuses on design and results
Presents competing hypotheses; requires comparing perspectives
Cell biology, DNA/RNA, natural selection, ecology
pH scale, phase changes, solubility, molar mass
Forces, motion, gravity, density, energy conservation
Geology, astronomy, meteorology, oceanography
Analyze scientific data in tables, graphs, and diagrams. Recognize trends, translate data between formats, and perform interpolation or extrapolation.
Extract specific values and understand data organization in tables, graphs, and diagrams
Recognize patterns, correlations, and relationships in scientific data
Estimate values between data points (interpolation) and beyond the data range (extrapolation)
Convert data between tables, graphs, diagrams, and written descriptions
Determine how quickly variables change and calculate slopes, speeds, and rates
Analyze and compare data from multiple experiments, trials, or conditions
Understand experimental design and execution. Identify variables, understand procedures, and evaluate experimental tools.
Understand how experiments are structured and why specific designs are chosen
Distinguish between independent, dependent, and controlled variables in experiments
Judge the validity of scientific information and draw conclusions. Compare conflicting viewpoints and evaluate hypotheses.
Analyze and compare competing scientific hypotheses, theories, or perspectives
Determine which hypothesis is supported or refuted by new experimental data
Make valid inferences and conclusions based on experimental results
Recognize unstated assumptions and limitations in scientific arguments and experiments
Evaluate which competing theory has stronger evidence or makes better predictions
Start practicing with authentic passages covering all question types and content areas.