Grade 8 — Science

NGSS Aligned

Grade 8 — Science

Grade 8 Science explores DNA, inheritance, and evolution in life science, atomic structure and chemical reactions in physical science, and the solar system and space science in earth science — aligned to the Next Generation Science Standards.

Units & Topics Covered

3 units  ·  18 topics

Life Science: Evolution & Genetics

  • DNA structure: double helix, base pairs, and the genetic code
  • Protein synthesis: transcription and translation overview
  • Patterns of inheritance: dominant, recessive, codominance, incomplete dominance
  • Evidence for evolution: fossil record, comparative anatomy, DNA sequencing
  • Natural selection: variation, selection pressure, adaptation, and fitness
  • Mechanisms of speciation and macroevolution

Physical Science: Atoms & Reactions

  • Atomic structure: protons, neutrons, electrons, and atomic number
  • Organisation of the periodic table: periods, groups, and trends
  • Chemical bonding: ionic, covalent, and metallic bonds (introduction)
  • Writing and balancing chemical equations
  • Law of conservation of mass in chemical reactions
  • Energy transformations: kinetic, potential, thermal, and chemical energy

Earth & Space Science

  • The scale and structure of the universe; the Big Bang theory
  • Life cycle of stars: nebula, main sequence, red giant, and stellar remnants
  • Galaxies: types, structure, and our place in the Milky Way
  • The solar system in detail: planetary characteristics, moons, and orbits
  • Earth's rotation and revolution: day, year, and seasons
  • Space exploration: satellites, space telescopes, and missions to Mars
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