GS covers biology, chemistry, physics, and earth science. It contributes to line scores for technical and medical jobs.
Broad science literacy across biology (cells, genetics, anatomy), chemistry (elements, reactions), physics (motion, energy), and earth science (weather, geology, astronomy).
General Science samples a broad high-school science foundation. Build a clear core in biology, human anatomy, chemistry, physics, and earth and space science, then practice distinguishing closely related terms.
Know cell structures, photosynthesis, respiration, reproduction, and basic inheritance.
Connect each organ and system to its main function and interactions with other systems.
Review atoms, the periodic table, bonding, reactions, states of matter, acids, and bases.
Understand motion, forces, energy transfer, waves, electricity, and heat.
Study rocks, plate tectonics, the water cycle, atmosphere, seasons, and the solar system.
Open a question to review the choices, correct answer, and a short explanation.
Why: Chloroplasts contain chlorophyll and are the main site of photosynthesis in plant cells.
Why: Hemoglobin in red blood cells binds oxygen and transports it from the lungs to tissues.
Why: The pH scale runs from acidic below 7 to basic above 7; pH 2 is strongly acidic.
Why: Stress builds where tectonic plates meet and is released as earthquakes along faults.
Why: A nonzero net force produces acceleration, meaning a change in speed, direction, or both.
Cells and genetics: Review organelles, cell division, DNA, heredity, photosynthesis, and respiration.
Human biology: Map organs to the circulatory, respiratory, digestive, nervous, and excretory systems.
Chemistry: Study atomic structure, periodic trends, bonding, reactions, matter, acids, and bases.
Physics: Review motion, force, energy, waves, heat, and basic electricity.
Earth science: Study rocks, plate tectonics, weather, atmosphere, and the water cycle.
Space and ecology: Review the solar system, seasons, food webs, populations, and ecosystems.
Timed set: Complete 15 mixed questions in 12 minutes and revisit weak science branches.
Start a free trial to practice General Science and review misses by topic.
Free ASVAB study cheat sheet
Key formulas, composite scores, and score benchmarks in one printable PDF.