GED Science Mastery: Complete Prep Course + Practice

Understand the GED science test structure and topics: life, physical, and earth and space science, within 90 minutes of 35–40 questions, emphasizing graph and diagram interpretation and data analysis.

Learn to analyze scientific texts and graphs by highlighting keywords, summarizing ideas, and interpreting data trends, relationships between variables, and rising, falling, or constant patterns using axes, labels, and units.

Explore prokaryotic and eukaryotic cells and their organelles—nucleus, mitochondria, cytoplasm, and cell membrane—plus plant- and animal-cell differences, specialized cells, and diffusion, osmosis, and active transport.

Explore mitosis and meiosis: mitosis enables growth and repair, yielding two identical somatic cells; meiosis enables reproduction, yielding four non-identical cells with half the chromosomes in sex cells.

Explore monohybrid crosses with Punnett squares to predict tall and short offspring, identify dominant and recessive alleles, and recognize heterozygous and homozygous genotypes.

Explore reproduction and heredity, comparing asexual and sexual reproduction, meiosis, fertilization, zygote formation, and how genes, chromosomes, and alleles shape genotype and phenotype.

Explore how evolution changes living things over generations through inherited traits and natural selection, with Darwin’s theory, fossils, embryos, dna, and examples such as camouflage.

Learn how specialized cells form tissues, organs, and organ systems in the human body, including epithelial, connective, muscle, and nerve tissues, and circulatory, respiratory, digestive, nervous, skeletal, and muscular systems.

Discover how homeostasis balances body temperature, blood sugar, and water, and how cellular respiration in mitochondria converts glucose to ATP through aerobic and anaerobic pathways.

Explore pathogens like bacteria, viruses, fungi, protozoa, prions, and helminths and their transmission modes such as direct, indirect, airborne, and foodborne; prevent spread with hand washing and vaccination.

Explain nutrition and a balanced diet, detailing ingestion, digestion, absorption, assimilation, and waste removal; cover carbohydrates, proteins, fats, vitamins, minerals, water, fiber, energy needs, and nutrition labels.

Explore ecosystems as communities of organisms and their environment, and how energy flows from producers to consumers and decomposers through food chains and food webs.

Examine matter's states—solids, liquids, gases, and plasma—and how atoms and elements form, with protons, neutrons, and electrons building nuclei and electron clouds, defining atomic number, isotopes, valence electrons, and bonding.

Discover how elements are pure substances of one atom, defined by atomic number and mass, and how the periodic table groups metals, non-metals, metalloids, and isotopes across periods and groups.

Explore how compounds form via ionic, covalent, and metallic bonds, and how ions and crystal lattices influence their properties.

Master mixtures, including homogeneous solutions like salt water and air, and heterogeneous ones like oil and water, and learn solute, solvent, solution, and solubility concepts, including unsaturated, saturated, and supersaturated.

Balance chemical equations by adjusting coefficients to equalize atoms, using examples like H2 + O2 to H2O, and explore factors affecting reaction rate: concentration, temperature, catalysts, pressure, and surface area.

Discover how reactants become products, observe signs of chemical reactions, and apply law of conservation of mass; classify reactions as exothermic or endothermic, and explore oxidation, rusting, combustion, photosynthesis, respiration.

Explore how acids and bases differ in taste and ion release, and how the pH scale classifies solutions as acidic, neutral, or basic. Explore buffers and salt and water formation.

Explore energy as the capacity to do work, including gravitational and elastic potential energy, kinetic energy, and forms like heat, sound, chemical, and electrical energy, and its transfer.

Explore how heat transfers cause temperature changes or phase changes, define specific heat capacity and latent heat, and explain heating and cooling curves, fusion and vaporization, condensation, sublimation, and deposition.

Learn the basics of electricity from atoms to circuits, including charge, ions, conductors, insulators, semiconductors, and superconductors. Apply Ohm's law with voltage, current, and resistance to analyze circuits.

Learn how power measures the rate of work or energy transformed through P = W / T and P = F × v, with watts, horsepower, kilowatts, and efficiency.

Explore motion by defining distance and displacement, distinguishing speed from velocity, and applying rate-of-change formulas to compute velocity and acceleration with practical examples.

Explore how distance-time and velocity-time graphs depict motion, including forward motion, rest, and return. Learn to compute speed, average speed, and the area under velocity-time graphs to find distance.

Define linear momentum as mass times velocity, and explore its units and vector nature. Apply conservation of momentum to elastic and inelastic collisions with example calculations.

Work is done when a force moves an object in the same direction as displacement; apply W = F S or W = F cos theta S, measured in joules.

Explore how simple machines multiply force or change direction, using examples like lever, inclined plane, wheel and axle, pulley, screw, and wedge to make work easier.

Explore how waves carry energy through media, compare transverse and longitudinal waves, and master crest, trough, wavelength, amplitude, frequency, period, and wave speed.

Explore the universe and our solar system, covering galaxies, dark matter and dark energy, the sun and planets, Earth's ability to support life, and phenomena like eclipses and tides.

Practice GED test questions from the unit, learn from mistakes, and build confidence using the strategies and knowledge in the test books; mastery comes from doing.