Junkao Science Knowledge study guide
Junkao Science Knowledge · Work through your exam, one topic at a time.
Junkao Science Knowledge is a multiple-choice science assessment that tests whether a candidate can reason across the standard middle- and early high-school science curriculum rather than recall isolated facts. It suits students preparing for competitive science placements, candidates moving into science teaching or tutoring, and adult learners who want an independent check of their general science foundation. The Junkao Science Knowledge study guide has 8 sections and about 3,577 words.
01Scientific Inquiry and Experimental Design
This domain tests whether you can turn a question into a testable hypothesis, identify what was changed and what was measured, and judge whether a stated conclusion is actually supported by the data. Items usually present a scenario - a student comparing detergents, a trial of a fertilizer, a survey of two neighborhoods - and ask you to name variables, spot a design flaw, or choose the better of two designs.
479 words, about 2 min02Measurement, Units, and Data Analysis
This domain tests fluency with SI units and prefixes, unit conversion, significant figures, uncertainty, and the interpretation of tables and graphs. Expect items that ask you to convert a quantity, report an answer to the correct number of significant figures, compute a derived quantity such as density, or read a gradient with its units.
444 words, about 2 min03Matter, Atoms, and Chemical Reactions
This domain covers the classification of matter, atomic structure, bonding, the mole concept, and the accounting of atoms in reactions. Items ask you to classify a substance, interpret an isotope or ion symbol, balance an equation, compute a molar quantity, or decide whether a described change is physical or chemical.
431 words, about 2 min04Forces, Motion, and Energy
This domain tests Newton's laws, kinematics, momentum, and energy conservation, usually through short calculations on a single object or a simple collision. Items ask you to draw or interpret a free-body diagram, find an acceleration or final speed, compare work and kinetic energy, or decide whether momentum is conserved.
460 words, about 2 min05Waves, Electricity, and Magnetism
This domain combines wave behaviour, simple circuits, and electromagnetic effects. Items ask you to compute wavelength or frequency, find the equivalent resistance or current in a series or parallel circuit, compute power, or explain what happens when a magnet moves near a coil.
483 words, about 2 min06Cells, Genetics, and Evolution
This domain tests cell structure and transport, the central dogma, inheritance patterns, and the mechanism of evolution. Items ask you to identify an organelle's function, predict offspring ratios from a cross, trace information from DNA to protein, or explain how a trait spreads through a population.
438 words, about 2 min07Ecosystems and Environmental Science
This domain tests how energy and matter move through ecosystems, what limits population growth, and how human activity alters these systems. Items ask you to trace a food web, apply the ten-percent rule, classify a symbiotic relationship, or identify the sequence of events in eutrophication or succession.
426 words, about 2 min08Earth Systems, Weather, and Astronomy
This domain spans the solid Earth, the atmosphere, and the solar system. Items ask you to relate plate boundaries to earthquakes and volcanoes, interpret a weather map or front, explain the seasons, sequence moon phases, or apply a scaling law to an orbiting body.
416 words, about 2 min