Free SAT Reading Science and History Passages Practice Test Flashcards

A passage states: 'While early researchers believed bacteria caused stomach ulcers due to stress, Marshall and Warren's 1984 study demonstrated that Helicobacter pylori is the primary cause.' The passage suggests that scientific understanding of ulcers:

Answer: Changed significantly following new experimental evidence

The passage directly describes a shift from one explanation (stress) to another (bacterial infection) based on new evidence — a hallmark of scientific progress.

In a history passage about the Industrial Revolution, the author writes: 'Factory owners grew wealthy as workers labored in dangerous conditions for 14 hours a day.' The author's tone is best described as:

Answer: Critical of the inequity

The contrast between growing wealth and dangerous long labor implies a critical stance toward the exploitative conditions of the era.

A science passage describes a control group and an experimental group in a study. What is the PURPOSE of the control group?

Answer: To provide a baseline for comparison

A control group receives no treatment (or a standard treatment) to serve as a comparison baseline, allowing researchers to isolate the effect of the independent variable.

A history passage describes how the printing press 'democratized knowledge by making books affordable to common people.' The word 'democratized' most nearly means:

Answer: Made widely available or accessible

To 'democratize' something means to make it available to a wide audience, not just an elite — here, making books accessible to ordinary people.

A science passage describes an experiment where adding fertilizer to plants increased growth, but only up to a certain point — beyond which growth declined. Which conclusion best fits this data?

Answer: There is an optimal amount of fertilizer beyond which it becomes harmful

The data shows a dose-response relationship with a threshold — growth increases then decreases, indicating an optimal dose beyond which more becomes harmful.

A history passage about the Civil Rights Movement states that 'legislative victories alone did not end discrimination.' What is the passage most likely arguing?

Answer: Social and cultural change must accompany legal reform for full equality

The passage acknowledges laws were important but insufficient alone — implying that deep cultural and social change is also necessary.

In a science passage, a researcher writes that her findings 'support but do not conclusively prove' her hypothesis. This phrasing indicates:

Answer: Scientific evidence can support hypotheses without definitively proving them

Scientific language recognizes that evidence supports or undermines hypotheses; definitive 'proof' in the mathematical sense is rare in empirical science.

A history passage discusses how Rome's expansion strained its supply chains and governance. This passage is most concerned with which theme?

Answer: The relationship between imperial growth and institutional failure

The focus on strained logistics and governance resulting from expansion points to a central theme: how growth itself can undermine the systems that enabled it.

A graph in a science passage shows CO₂ levels rising steeply after 1950. The passage states this correlates with industrialization. A reader should conclude:

Answer: CO₂ and industrialization are correlated, but the passage does not claim direct causation

Correlation (both rising together) is shown; the passage avoids claiming causation without further evidence — a key distinction in scientific reading.

A passage about the Dust Bowl describes farmers who 'could not have known that their traditional practices would strip the soil bare.' This statement primarily suggests:

Answer: Environmental disasters can stem from lack of knowledge rather than malice

The phrase 'could not have known' removes blame from farmers, suggesting the disaster arose from ignorance rather than intent — a nuanced historical perspective.

A science passage uses the phrase 'peer-reviewed study.' This most likely means:

Answer: Other experts evaluated and verified the research before publication

Peer review is the process by which independent experts in a field evaluate a study's methodology and conclusions before it is published — a standard of scientific credibility.

A history passage about the French Revolution states that 'economic inequality fueled popular anger.' The word 'fueled' implies:

Answer: Economic inequality intensified or fed the growing discontent

'Fueled' is a metaphor for feeding or intensifying something — here, inequality intensified popular anger, functioning as a cause of revolution.

A science passage discusses two competing theories to explain the same phenomenon. The author presents both without concluding which is correct. This suggests:

Answer: The scientific community has not yet reached consensus on this question

Presenting both sides without resolution reflects an area of active scientific debate where evidence is insufficient to establish consensus.

A history passage describes how 'railroad construction opened the American West but also displaced Indigenous communities.' The author's approach to this topic is best described as:

Answer: Acknowledging both positive outcomes and human costs

The passage uses 'but also' to balance the economic benefit with the human cost — a nuanced, multi-perspective approach.

In a science passage, the author writes that 'correlation does not equal causation.' This phrase warns against:

Answer: Assuming that because two things happen together, one caused the other

This classic scientific caution reminds us that two variables can co-vary without one causing the other — a third variable may be responsible, or the relationship could be coincidental.

A history passage discusses the role of women in World War II. The author emphasizes their contributions in factories and military support. The passage's central argument is most likely:

Answer: Women's wartime contributions challenged gender norms and expanded their social roles

Emphasizing women's contributions implies an argument about how the war disrupted traditional gender roles and created pathways for women's expanded social participation.

A science passage describes an invasive species that thrives because it has 'no natural predators' in its new environment. This best explains the species':

Answer: Rapid population growth and ecological disruption

Without natural predators to control population growth, an invasive species can multiply rapidly, disrupting the ecosystem's balance.

A history passage about colonialism notes that 'the colonizers imposed their language, suppressing indigenous tongues.' The word 'suppressing' conveys:

Answer: Active force used to diminish or eliminate indigenous languages

'Suppressing' implies active force or coercion to restrict or eliminate something — carrying a clearly negative connotation about colonial language policies.

In a science passage, an author criticizes a study for having a 'small sample size.' The author's concern is most likely that:

Answer: The results may not be generalizable to the broader population

A small sample size limits statistical power and generalizability — findings from a small group may not reliably predict what would happen in a larger, more diverse population.

A history passage discusses a document that 'served as a template for future democratic constitutions.' The word 'template' most nearly means:

Answer: A model that others copied or built upon

A template is a pattern or model from which copies or adaptations are made — here, the document influenced later constitutions.