Praxis Middle School Science Practice Test
Praxis Middle School Science (5442) practice covers core scientific ideas and the evidence-based reasoning students use to explain natural phenomena. The available questions sample matter and mixtures, energy transfer, electricity, measurement, weather, the water cycle, erosion, and rock formation. These examples connect physical, Earth, and environmental science concepts with observations and simple investigations.
Exam overview
About the Praxis Middle School Science Exam
Science teaching at the middle school level requires interpreting observations, selecting explanations supported by evidence, and connecting processes across Earth and physical science. Sample tasks ask learners to distinguish a dissolved substance from a suspended solid, infer how sedimentary layers form, and identify erosion as soil moves into a stream. Other questions address evaporation, low-pressure weather conditions, and how a river valley can expose matching rock layers. Physical science reasoning includes comparing thermal conductivity, converting metric units, and drawing a limited conclusion from a closed-circuit test. In classroom investigations, teachers also need to recognize what a procedure can demonstrate, separate observations from unsupported claims, and use measurements or models to clarify cause-and-effect relationships.
Sample Practice Questions
Review a selection from this exam's published US Practice Tests practice bank.
A student dissolves sugar in water and then pours the solution into a shallow dish. After the water evaporates, sugar crystals remain. What does this observation show?
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Correct answer: CDissolving disperses sugar particles throughout the water but does not destroy the sugar. As water evaporates, the sugar remains and can crystallize.
A region experiences several days of steady rain, and water flows over bare soil into a nearby stream. Which process most directly moves the soil into the stream?
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Correct answer: AFlowing water can detach and transport soil particles, which is erosion. The particles may later settle in the stream through deposition.
A student observes that a sedimentary rock contains several visible layers. What is the most likely reason the layers formed?
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Correct answer: BSedimentary layers commonly form as sediments are deposited at different times. Burial, compaction, and cementation can turn these deposits into layered rock.
A student compares two mixtures: one contains sand stirred into water, and the other contains salt dissolved in water. Which method can separate sand from the first mixture while leaving the dissolved salt in the second mixture unaffected?
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Correct answer: ASand does not dissolve in water, so its particles are retained by filter paper. Dissolved salt particles pass through ordinary filter paper with the water.
A weather map shows closely spaced isobars around a low-pressure center. What condition is most likely near that center?
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Correct answer: AClosely spaced isobars indicate a large pressure gradient over a short distance. That gradient is associated with stronger winds, although local terrain and other conditions can also affect wind speed.
Which process in the water cycle changes liquid water at Earth's surface into water vapor?
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Correct answer: CEvaporation is the change from liquid water to water vapor. Condensation is the reverse change, while precipitation is water falling from clouds and infiltration is water entering soil.
A student examines a map showing that the same rock layers are present on opposite sides of a river valley, but the layers are now separated by the valley. Which process most likely formed the valley?
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Correct answer: AA river can gradually erode and remove rock and sediment, carving a valley that separates rock layers that were once continuous.
How to use this practice test
The free practice bank contains 50 published questions; each session presents up to 20 randomly selected questions. Work through the items by identifying the relevant observation or measurement, choosing the scientific concept that explains it, and checking the results after the session. Use missed answers to pinpoint concepts that need further review.
Preparation tips
- For mixture questions, distinguish solutions from suspensions and match separation methods such as filtration or evaporation to the materials involved.
- Trace water and sediment through Earth processes: connect evaporation to water-vapor formation and runoff over bare ground to erosion and sediment transport.
- Compare heat transfer in materials by separating thermal conductivity from the temperature of the surrounding room.
- Practice metric conversions by writing the unit relationship before moving the decimal point, such as meters to centimeters.
- For circuit investigations, identify the tested variable and state only what a lit bulb supports: that the tested material completed a conductive path under those conditions.