Science Lessons
Comprehensive lessons to help you understand 8th grade science concepts for the EOG test.
Matter & Chemistry
Properties of matter, periodic table, and chemical changes
- Elements and Compounds
- Physical and Chemical Properties
- Chemical Reactions
- Energy Sources
- Renewable vs. Non-renewable Resources
Earth's History
Geological evidence, dating rocks, and plate tectonics
- Cells and Organelles
- Microorganisms
- Disease and Health
- Genetic Engineering
- Geologic Time Scale
Evolution
Evidence of evolution, natural selection, and classification
- Rock Cycle
- Plate Tectonics
- Dating Methods
- Fossils and Evidence
- Natural Selection and Adaptation
Ecosystems
Food webs, energy flow, and organism interactions
- Food Chains and Webs
- Producers and Consumers
- Biogeochemical Cycles
- Water Cycle
- Watersheds and Water Systems
Hydrosphere
Water cycle, ocean environment, and water quality
- Ocean Zones
- Estuaries and Coastal Environments
- Ocean Resources
- Water Quality
- Human Impact on Oceans
More Features Coming Soon!
Interactive Diagrams
Explore scientific concepts with interactive diagrams and animations.
Practice Quizzes
Test your knowledge with practice quizzes for each topic.
Video Tutorials
Watch video explanations of complex science concepts.
Printable Study Guides
Download and print study guides for offline learning.