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Digital SAT practice questions

211 free questions with answers and explanations.

Practice test
  1. 101.A botanist is studying the growth of a rare plant. She observes that the plant's height increases by 1.5 cm every 3 days. If the plant is initially 12 cm tall, what will its height be after 18 days?Math: Problem-Solving and Data Analysis
  2. 102.A political scientist is analyzing voter turnout data for a recent municipal election. The data shows that districts with higher median household incomes consistently had higher voter turnout rates than districts with lower median household incomes. Furthermore, districts with a higher percentage of homeowners also showed higher turnout. However, districts with a younger average age consistently had lower turnout, regardless of income or homeownership status. Based on this data, which of the following statements is most strongly supported?Reading and Writing: Information and Ideas
  3. 103.A climate scientist is analyzing historical temperature data from Greenland ice cores. The data reveals several abrupt shifts in temperature over the past 10,000 years, some occurring within decades. These shifts are often correlated with changes in atmospheric dust levels, ocean currents, and volcanic activity recorded in the same cores. However, the data also shows that not every major volcanic eruption or ocean current alteration immediately led to an abrupt temperature shift. Which of the following conclusions is most strongly supported by this information?Reading and Writing: Information and Ideas
  4. 104.A chemical engineer is studying a reaction where the concentration of a reactant, C(t), in moles per liter, changes over time t, in seconds. The concentration is modeled by C(t) = (t^2 - 9) / (t^2 - t - 6). As time progresses, what value does the concentration approach?Math: Advanced Math
  5. 105.A company's monthly profit P(x), in thousands of dollars, from selling x units of a product, is modeled by the function P(x) = -2x^2 + 20x - 18. What is the maximum profit the company can achieve?Math: Advanced Math
  6. 106.A scientist is modeling the concentration of a drug in a patient's bloodstream over time. The concentration C(t), in mg/L, after t hours, is given by C(t) = (5t^2 + 3t + 2) / (2t^2 + 7). As time t approaches infinity, what value does the concentration C(t) approach?Math: Advanced Math
  7. 107.A car travels at an average speed of 60 miles per hour. How many minutes will it take for the car to travel 45 miles?Math: Problem-Solving and Data Analysis
  8. 108.A carpenter is cutting a triangular piece of wood for a roof truss. The triangle has angles measuring 35° and 75°. What is the measure of the third angle?Math: Geometry and Trigonometry
  9. 109.A gardener is planting flowers in a triangular bed. The bed has sides of length 7 feet, 8 feet, and 13 feet. What type of triangle is formed by the flower bed?Math: Geometry and Trigonometry
  10. 110.A marine biologist is studying the feeding habits of a newly discovered species of deep-sea fish. Observations reveal that this fish possesses a large mouth, bioluminescent lures, and extremely sharp, inward-pointing teeth. It is typically found in areas with sparse prey populations. The biologist hypothesizes that this species is an ambush predator. Which finding, if true, would most strongly support the biologist's hypothesis?Reading and Writing: Information and Ideas
  11. 111.A physicist is studying the trajectory of a particle. The height of the particle, h(t), in meters, after t seconds, is given by the function h(t) = -t^2 + 8t + 9. What is the maximum height reached by the particle?Math: Advanced Math
  12. 112.A chemist is studying a reaction where the concentration of a reactant, C(t), in moles per liter, changes over time t, in seconds. The relationship is given by C(t) = (t^2 - 4t + 4) / (t^2 - 2t). For what value(s) of t is the concentration undefined?Math: Advanced Math
  13. 113.The following passage discusses the challenges of interstellar travel: "Despite decades of theoretical advancements, the practicalities of interstellar travel remain daunting. The sheer distances involved necessitate speeds approaching a significant fraction of the speed of light, leading to relativistic effects that complicate navigation and communication. Furthermore, the energy requirements for such velocities are astronomical, far exceeding current technological capabilities. Even if these hurdles were overcome, the biological effects of prolonged exposure to cosmic radiation and microgravity present a formidable, perhaps insurmountable, obstacle to human crews." Which of the following best describes the main purpose of this passage?Reading and Writing: Craft and Structure
  14. 114.A historian is analyzing a collection of manifestos from various political movements of the early 20th century. One manifesto frequently uses phrases like "unshackle the oppressed" and "ignite the flames of revolution." Which of the following words best describes the tone of this manifesto?Reading and Writing: Craft and Structure
  15. 115.A student is analyzing a historical document from the 18th century. The document frequently uses the term 'burgher' to refer to certain members of the community. Based on common historical usage, which of the following best describes a 'burgher'?Reading and Writing: Craft and Structure
  16. 116.A historian is analyzing two differing accounts of a pivotal battle. Account A, written by a general from the victorious side, describes the battle as a 'masterclass in strategic brilliance and unwavering courage.' Account B, written by a foot soldier from the defeated side, characterizes it as a 'chaotic, bloody struggle marked by confusion and desperate retreat.' What is the most significant difference between these two accounts?Reading and Writing: Craft and Structure
  17. 117.A research paper discusses the impact of deforestation on local ecosystems. The author describes the loss of specific plant species, the displacement of animal populations, and the resulting soil erosion. Which of the following best describes the organizational pattern of this discussion?Reading and Writing: Craft and Structure
  18. 118.A student is drafting an essay arguing for increased funding for public libraries. They are considering including the following sentence: 'Libraries are not just repositories for books; they are vital community hubs providing free access to information, technology, and educational programs for all demographics.' Where would this sentence be most effective in the essay?Reading and Writing: Craft and Structure
  19. 119.A student is drafting an essay arguing for the implementation of a four-day work week. They want to include a paragraph that acknowledges the potential challenges and then immediately refutes them. Which of the following rhetorical strategies would be most effective for this paragraph?Reading and Writing: Craft and Structure
  20. 120.A historian is researching the impact of Ancient Greek philosophy on Renaissance thought. They come across two primary sources: a translated excerpt from Plato's 'Republic' and a letter from a Renaissance scholar discussing the importance of classical texts. To effectively illustrate the *direct influence* of Plato on Renaissance thinkers, which approach would be most effective for the historian?Reading and Writing: Craft and Structure
  21. 121.A journalist is writing an article about a recent increase in local homelessness. They are considering two potential titles: Title 1: "Homelessness on the Rise: A Crisis in Our Community" Title 2: "More Than Just Numbers: The Human Stories Behind Our City's Homelessness Crisis" Which of the following statements best describes the difference in purpose between the two titles?Reading and Writing: Craft and Structure
  22. 122.A student is writing an argumentative essay about the necessity of preserving endangered languages. They have drafted the following topic sentence for a body paragraph: "The loss of indigenous languages represents an irreversible diminishment of human knowledge and cultural diversity." To effectively support this topic sentence, which of the following would be the most relevant type of evidence to include in the paragraph?Reading and Writing: Craft and Structure
  23. 123.A literary critic is analyzing a novel that frequently uses metaphors related to a journey or voyage to describe a character's emotional development. The critic notes that the character's initial feelings of confusion are described as 'adrift on a shoreless sea,' while their eventual self-discovery is depicted as 'reaching a familiar harbor.' This consistent use of journey-related imagery throughout the novel primarily serves which of the following literary purposes?Reading and Writing: Craft and Structure
  24. 124.A student is writing an essay about the ethical implications of genetic engineering. They have found two sources: Source A, a scientific journal article detailing the technical feasibility of gene editing, and Source B, a philosophical treatise discussing the moral boundaries of altering human DNA. The student wants to emphasize the *tension* between scientific capability and ethical considerations. Which of the following strategies would most effectively integrate these two sources to achieve the student's purpose?Reading and Writing: Craft and Structure
  25. 125.A literary critic is analyzing a poem that repeatedly uses words like 'shadows,' 'whispers,' 'fading light,' and 'forgotten paths.' The critic notes that these elements evoke a sense of melancholy and loss. Which literary device is the poet primarily using to achieve this effect?Reading and Writing: Craft and Structure
  26. 126.A scientist is writing a research paper describing a newly discovered biological process. The paper includes a diagram illustrating the sequential steps of the process, labeled 1 through 5. The accompanying text explains each step in detail, using transition words like 'initially,' 'subsequently,' and 'finally.' What is the primary purpose of this text structure?Reading and Writing: Craft and Structure
  27. 127.A student is reviewing a draft of their research paper on climate change. They notice a sentence that reads: 'The increasing frequency of extreme weather events is a direct *corollary* of rising global temperatures.' The student wants to ensure the word choice is precise. What does 'corollary' mean in this context?Reading and Writing: Craft and Structure
  28. 128.A researcher is examining two articles about the impact of artificial intelligence on employment. Article 1 argues that AI will lead to widespread job displacement and increased economic inequality. Article 2 contends that AI will create new job opportunities and enhance productivity, ultimately benefiting society. Which of the following best describes the relationship between the two articles?Reading and Writing: Craft and Structure
  29. 129.A student is analyzing a scientific paper that discusses the properties of a newly synthesized material. The paper describes the material as having a 'remarkably high tensile strength, allowing it to withstand significant stretching forces without fracturing.' Based on this description, which word best describes the material's primary characteristic?Reading and Writing: Craft and Structure
  30. 130.An environmental scientist is writing a report on the effects of climate change on polar bear populations. The report's conclusion section needs to summarize the findings and emphasize the urgency of mitigation efforts. To achieve this purpose, which of the following would be the most effective concluding statement?Reading and Writing: Craft and Structure
  31. 131.A historian is examining a series of political cartoons from the early 20th century. One cartoon depicts a large, menacing octopus labeled 'Standard Oil' with its tentacles wrapped around the U.S. Capitol, state houses, and various industries. The caption reads, 'The People's Enemy.' What is the most likely purpose of this cartoon?Reading and Writing: Craft and Structure
  32. 132.The following excerpt describes a newly discovered species of deep-sea organism: "This creature, provisionally named *Abyssus mirabilis*, exhibits several **anomalous** features. Its bioluminescent organs, rather than being concentrated along its ventral surface as is common among its relatives, are instead distributed sparsely across its dorsal integument. Furthermore, its metabolic rate is remarkably low, allowing it to survive for extended periods without sustenance, a trait atypical for its predatory nature." As used in the text, what does the word 'anomalous' most nearly mean?Reading and Writing: Craft and Structure
  33. 133.A sociologist is drafting an introduction for an article about the increase in remote work. The article aims to discuss both the benefits (e.g., flexibility) and challenges (e.g., isolation) of this trend for employees. To effectively set up this discussion, which of the following opening strategies would be most appropriate?Reading and Writing: Craft and Structure
  34. 134.A student is writing an essay about the societal impact of artificial intelligence. They plan to argue that while AI offers vast potential benefits, its unchecked development poses significant ethical dilemmas. Which of the following sentences would best serve as a thesis statement for this essay?Reading and Writing: Craft and Structure
  35. 135.A historian is writing an essay arguing that the invention of the printing press profoundly altered the social and political landscape of Europe. To best support this claim, which of the following approaches to structuring the argument would be most effective?Reading and Writing: Craft and Structure
  36. 136.A historian is examining a collection of letters written by soldiers during World War I. Many of the letters contain references to 'the Great Push' and 'going over the top.' The historian notes that these phrases, while common at the time, often carried an underlying sense of grim resignation rather than enthusiastic optimism. This observation primarily reveals the historian's understanding of which aspect of the texts?Reading and Writing: Craft and Structure
  37. 137.A literary critic is analyzing a novel where the protagonist frequently describes their environment using vivid, unsettling sensory details, such as 'the air hung thick with unsaid words, heavy as damp wool' and 'shadows writhed like tortured spirits.' Which literary device is the author primarily employing to create atmosphere?Reading and Writing: Craft and Structure
  38. 138.An anthropologist is studying a remote indigenous community. They observe that the community places a high value on cooperation, sharing resources, and collective decision-making. The anthropologist concludes that the community's social structure is fundamentally 'egalitarian.' What does the anthropologist mean by 'egalitarian' in this context?Reading and Writing: Craft and Structure
  39. 139.A journalist is writing an article comparing two prominent political figures. They dedicate one paragraph to discussing the first figure's policy positions on economic issues and the next paragraph to discussing the second figure's policy positions on economic issues. They then follow this with a paragraph analyzing their differing approaches to social reform. Which text structure is the journalist primarily employing?Reading and Writing: Craft and Structure
  40. 140.A student is writing an argumentative essay about the benefits of renewable energy. They want to introduce a counter-argument to strengthen their own position. Which of the following sentences would be most effective for introducing a counter-argument in this context?Reading and Writing: Craft and Structure
  41. 141.A journalist is writing an article about a small town's struggle with economic decline. The article begins by describing the once-bustling main street now lined with vacant storefronts and ends with a quote from a long-time resident saying, 'We've seen better days, but we're not giving up yet.' Which option best describes the overall structure of this article?Reading and Writing: Craft and Structure
  42. 142.A research team is preparing a report on the effectiveness of a new vaccine. The preliminary data shows a 95% efficacy rate, but the team emphasizes that this is based on a small sample size and further large-scale trials are 'imperative' before widespread adoption. What is the team's primary intention in using the word 'imperative'?Reading and Writing: Craft and Structure
  43. 143.A company produces two types of widgets, A and B. Widget A requires 2 hours of assembly and 1 hour of finishing. Widget B requires 3 hours of assembly and 1 hour of finishing. There are a maximum of 120 assembly hours and 50 finishing hours available per day. Let 'a' be the number of Widget A produced and 'b' be the number of Widget B produced. Which system of inequalities represents the constraints on production?Math: Algebra
  44. 144.A financial analyst is modeling the depreciation of a company's asset. The value of the asset, V, in dollars, after t years is given by the function V(t) = 50000(0.85)^t. What is the annual rate of depreciation?Math: Algebra
  45. 145.A botanist is studying the growth of a plant. The height of the plant, H, in centimeters, after t weeks is modeled by the function H(t) = 3(1.2)^t. What is the predicted height of the plant after 4 weeks?Math: Algebra
  46. 146.A landscaper is designing a circular garden. The area of the garden, A, in square feet, is given by the formula A = πr², where r is the radius in feet. If the landscaper wants the area to be 153.86 square feet, what should be the radius of the garden? (Use π ≈ 3.14)Math: Algebra
  47. 147.A chemist is analyzing a solution whose pH level, P, is described by the equation P = -log(H+), where H+ is the hydrogen ion concentration. If the pH level of the solution is 3, what is the hydrogen ion concentration, H+?Math: Algebra
  48. 148.The number of bacteria in a culture doubles every hour. If there are initially 50 bacteria, which equation represents the number of bacteria, N, after t hours?Math: Algebra
  49. 149.A scientist is tracking the population of a certain species of fish in a lake. The population, P(t), after t months, can be modeled by the equation P(t) = 1500 / (1 + 4e^(-0.2t)). What is the carrying capacity of the lake for this fish species?Math: Algebra
  50. 150.A company's profit, P(x), in thousands of dollars, from selling x units of a product is modeled by the function P(x) = -0.02x^2 + 6x - 100. What is the maximum profit, in thousands of dollars, the company can achieve?Math: Algebra