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PSAT 10 Reading & Writing Practice

SAT Practice Test
PSAT 10
English

PSAT 10 Reading & Writing Practice

Question 1

Marine biologist Dr. Elena Rodriguez has spent decades studying bioluminescence in deep-sea creatures. Her research reveals that these organisms produce light not merely for aesthetic display but for crucial survival functions. Some species use bioluminescence to attract prey, while others deploy it as a defensive mechanism to startle predators. The anglerfish, for instance, dangles a glowing lure to draw unsuspecting fish within striking distance. Conversely, the midwater squid releases bioluminescent ink clouds when threatened, creating a luminous decoy that confuses attackers while the squid escapes into darkness. Rodriguez's findings demonstrate that what appears to be simple light production actually represents a sophisticated evolutionary adaptation to the challenges of life in an environment where sunlight never penetrates.
Which choice best describes the function of the underlined sentence in the text as a whole?
A. It introduces evidence that contradicts Rodriguez's main argument about bioluminescence purposes
B. It compares the relative effectiveness of different species' bioluminescent strategies
C. It presents a specific instance of bioluminescence used for defense to contrast with the previously mentioned offensive application
D. It establishes the general pattern of bioluminescence that subsequent examples will follow

Question 2

The ancient Silk Road, spanning over 4,000 miles from China to the Mediterranean, facilitated more than commercial exchange. While merchants transported silk, spices, and precious metals across continents, they also carried ideas, technologies, and cultural practices that transformed civilizations along the route. Paper-making techniques traveled westward from China, revolutionizing record-keeping in Islamic and European societies. Mathematical concepts, including the decimal system, moved eastward from India through Central Asian trade hubs. Religious beliefs also spread along these networks; Buddhism reached China via Silk Road merchants, while Islamic teachings expanded into Central Asia through the same channels. Archaeological evidence suggests that even artistic styles merged, as Chinese motifs appeared in Persian textiles and Greco-Roman sculptural techniques influenced Buddhist statuary in Afghanistan. The Silk Road thus functioned as a vast conduit for cultural diffusion that shaped the development of Eurasian civilizations.
Which choice best states the main idea of the text?
A. Artistic traditions from different cultures merged along the Silk Road, creating new hybrid styles
B. The spread of paper-making technology along the Silk Road demonstrates how Chinese innovations transformed other civilizations
C. Archaeological discoveries have revealed that ancient merchants valued cultural preservation as much as commercial profit
D. The Silk Road served as a major channel for cultural and intellectual exchange that profoundly influenced the development of societies across Eurasia

Question 3

The phenomenon of phantom traffic jams—slowdowns that occur without any apparent cause—has puzzled drivers for decades. Researchers at MIT have finally explained this mysterious _____ occurs when even small fluctuations in speed ripple backward through dense traffic, amplifying until they create complete standstills.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. occurrence. When it
B. occurrence: it
C. occurrence, it
D. occurrence; when it

Question 4

Urban planners designing cities for extreme heat face competing priorities. They must balance the need for shade, which requires tree canopy coverage, with the demand for dense housing development. ______ some cities have adopted 'green corridor' strategies that integrate vegetation into high-density residential areas through rooftop gardens and vertical plant walls.
Which choice completes the text with the most logical transition?
A. Nevertheless,
B. To address this challenge,
C. Similarly,
D. As a result,

Question 5

While researching the development of early photography, a student has taken the following notes: • Louis Daguerre invented the daguerreotype process in 1839, creating images on silver-plated copper sheets. • The daguerreotype required exposure times of 10-15 minutes, making portrait photography extremely difficult. • William Henry Fox Talbot developed the calotype process in 1841, using paper coated with silver iodide. • The calotype allowed multiple prints to be made from a single negative, unlike daguerreotypes which were unique images. • Talbot's process reduced exposure time to approximately 1-2 minutes.
The student wants to emphasize an advantage of Talbot's calotype process over Daguerre's daguerreotype. Which choice most effectively uses relevant information from the notes to accomplish this goal?
A. While daguerreotypes produced only unique images requiring 10-15 minute exposures, Talbot's calotype process enabled multiple prints from a single negative and reduced exposure time to 1-2 minutes.
B. Louis Daguerre's 1839 daguerreotype process created images on silver-plated copper, while William Henry Fox Talbot developed the calotype using silver iodide on paper two years later.
C. Talbot's calotype process, developed in 1841, allowed photographers to create multiple prints from a single negative.
D. The calotype process used paper coated with silver iodide, a different material than the silver-plated copper sheets used in daguerreotypes.