Praxis Pennsylvania Grades 4-8 Subject Concentration: Science Practice Test
Science practice for the Pennsylvania Grades 4–8 Subject Concentration focuses on interpreting observations and explaining patterns in living systems, physical processes, Earth materials, and weather-related phenomena. Sample questions ask you to reason from evidence about food webs, plant transport, fossils, forces, energy, sound, and changes in air pressure.
Exam overview
About the Praxis Pennsylvania Grades 4-8 Subject Concentration: Science Exam
Questions call for selecting explanations that fit observations, distinguishing evidence from unsupported conclusions, and applying core scientific ideas to familiar situations. Life-science tasks may involve organism classification, cell structures, plant tissues, and relationships among consumers and producers. Physical-science reasoning includes motion, energy transfer, and how sound and light behave. Earth-science contexts can require interpreting rock layers and fossil evidence, while atmospheric examples connect pressure differences with changes in enclosed gases. Some items also test practical measurement choices, such as selecting an instrument for tracking a shadow. For middle-grades teaching, these skills support evaluating student observations, explaining cause-and-effect relationships, and connecting hands-on investigations with scientific concepts.
Sample Practice Questions
Review a selection from this exam's published US Practice Tests practice bank.
In a food web, grass is eaten by rabbits, and rabbits are eaten by foxes. If the rabbit population decreases substantially, what is a likely short-term effect?
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Correct answer: ARabbits are a food source for foxes in this food web, so fewer rabbits can mean less available food for the fox population.
A student measures the length of a shadow at noon on several clear days. Which instrument would provide the most appropriate measurement?
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Correct answer: BA meterstick is designed to measure length, including the length of a shadow. The other instruments measure volume, mass, and temperature.
A student observes that a rock has visible layers and contains shell-shaped impressions. Which conclusion is best supported by these observations?
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Correct answer: ALayering and preserved shell impressions are characteristic clues of sedimentary rocks, which can form as sediments accumulate and become compacted or cemented.
A student notices that a sealed bag of chips puffs up when carried to a high mountain. Which explanation best accounts for the change?
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Correct answer: AAtmospheric pressure generally decreases with elevation. The pressure inside the sealed bag can then push outward more strongly relative to the surrounding air, making the bag expand.
A student observes that a marble rolls down a ramp and speeds up. Which statement best describes the energy change as it rolls downward?
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Correct answer: AAs the marble loses height, its gravitational potential energy decreases. That energy is transferred mainly to the marble's motion, increasing its kinetic energy; some may also become sound or thermal energy.
Which feature helps distinguish a vertebrate from an invertebrate?
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Correct answer: AVertebrates have a backbone, or vertebral column. Invertebrates lack a backbone; movement, energy needs, and cells are not distinguishing features.
A student examines a single-celled organism that has a cell membrane and cytoplasm but no nucleus. Which group is the organism most likely to belong to?
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Correct answer: ABacteria are prokaryotic cells, which lack a nucleus. Plants, animals, and fungi have eukaryotic cells with a nucleus.
How to use this practice test
The free practice bank contains 50 questions, with sessions presenting up to 20 random questions. Work through each item by identifying the observation or measurement that matters, then compare the choices against the relevant scientific principle. Results appear after the session, helping you spot concepts to revisit.
Preparation tips
- Trace how a population change can affect other organisms in a food web, including both direct and short-term effects.
- Compare xylem and phloem by identifying what each tissue transports and the direction or destination of transport.
- Practice using rock layers and fossil impressions as evidence, and distinguish supported conclusions from speculation about the past.
- Explain motion down a ramp in terms of changing speed and energy, and identify where energy is transferred or transformed.
- Review measurement choices and physical explanations for common observations, such as shadow length, delayed thunder, and a sealed bag expanding at altitude.