GED subject
Science
Life, physical, and earth science, plus data and experiments. About 34 questions in 90 minutes. Roughly half come in sets of two or three tied to one passage, graph, or diagram. Reasoning matters more than recall. You need 145 to pass, on a scale that runs 100 to 200.
Try the free 5-question sample →Every topic, worked line by line
All 16 of these are open to read — no account needed. Each one explains the words, shows the method, and works a problem all the way through.
Life science · 40% of the test
Cell Structure & Function
walkthroughHuman Body Systems
walkthroughGenetics & Heredity
walkthroughEvolution & Natural Selection
walkthroughEcosystems & Energy Flow
walkthroughScientific Method & Experiment Design
walkthrough
Physical science · 40% of the test
Atoms, Elements & Matter
walkthroughChemical Reactions & pH
walkthroughMotion, Speed & Acceleration
walkthroughForces & Newton's Laws
walkthroughEnergy Forms & Conservation
walkthroughWaves, Heat & Electricity
walkthroughInterpreting Scientific Data
walkthrough
Earth and space science · 20% of the test
Plate Tectonics & Earth's Structure
walkthroughWeather, Climate & the Water Cycle
walkthroughAstronomy & the Solar System
walkthrough