# Grade 8: Science A course roadmap (science). Language: en. By @si. Licence: CC BY-SA 4.0. 0 of 20 concepts ready. In the app: https://ai.page/roadmap/la-sci-grade-8 Part of: [Louisiana: Science](https://ai.page/roadmap/la-sci.md) Goal: Louisiana academic standards: Science, Grade 8 ## 1. Life Science - [Variation in Species](https://ai.page/c/variation-in-species/index.md): Explain variation within and between species, distinguishing between continuous variation (e.g. height) and discontinuous variation (e.g. blood group), and between genetic and environmental causes - [Genetic Mutation](https://ai.page/c/genetic-mutation/index.md): Explain genetic mutation as a random change in DNA sequence, describe causes of mutation (e.g. radiation, chemicals, copying errors), and explain that most mutations are neutral, some harmful, and a few beneficial - [How Natural Selection Works](https://ai.page/c/how-natural-selection-works/index.md): Explain natural selection as the mechanism of evolution: heritable variation + competition for resources + differential survival and reproduction = change in allele frequency over generations - [Fossils as Evidence](https://ai.page/c/fossils-as-evidence/index.md): Analyse and interpret data from fossils to provide evidence of organisms and environments that existed long ago - [Evidence-Based Classification](https://ai.page/c/evidence-based-classification/index.md): Give reasons for classifying plants and animals based on specific characteristics, using evidence to justify classification decisions ## 2. Earth and Space Science - [Hazard Assessment & Evacuation](https://ai.page/c/hazard-assessment-and-evacuation/index.md): Explain probabilistic hazard assessment using eruption recurrence intervals and fault slip rates; describe how volcano observatories monitor ground deformation, gas emissions, and seismicity to issue alert levels; explore why communities remain near active hazards (fertile volcanic soil, poverty, cultural ties); discuss the ethics and politics of evacuation decisions and the social justice dimensions of disaster risk - [How Tectonic Plates Move](https://ai.page/c/how-tectonic-plates-move/index.md): Understand that convection currents in the molten mantle drive the movement of rigid tectonic plates; distinguish between convergent (collision/subduction), divergent (spreading ridges), and transform (sliding) plate boundaries; explain why volcanoes, earthquakes, and mountain chains cluster at boundaries; introduce the Wilson cycle of supercontinent assembly and breakup - [The Carbon Cycle](https://ai.page/c/the-carbon-cycle/index.md): Describe the carbon cycle, tracing carbon through photosynthesis, respiration, feeding, decomposition, and combustion, and explain the role of each process ## 3. Physical Science - [Atoms, Elements & Compounds](https://ai.page/c/atoms-elements-and-compounds/index.md): Explain the differences between atoms, elements, and compounds; describe the simple Bohr model of the atom (nucleus with protons and neutrons, electrons in shells); and write and interpret chemical symbols and simple formulae ## 4. BIOLOGICAL EVOLUTION: UNITY AND DIVERSITY - [Evidence for Evolution](https://ai.page/c/evidence-for-evolution/index.md): Describe the main types of evidence for evolution: the fossil record (change over time), comparative anatomy (homologous structures), and the geographic distribution of related species - [Life Changed Over Time](https://ai.page/c/life-changed-over-time/index.md): Recognise that living things have changed over time and that fossils provide information about organisms that inhabited the Earth millions of years ago ## 5. FROM MOLECULES TO ORGANISMS: STRUCTURES AND PROCESSES - [Species Distribution & Change](https://ai.page/c/species-distribution-and-change/index.md): Explain how environmental change (climate change, habitat loss, pollution) affects the distribution of species, including range shifts, local extinction, and invasive species - [Plant Reproduction](https://ai.page/c/plant-reproduction/index.md): Describe the structure of a flower and explain the processes of wind and insect pollination, fertilisation, seed and fruit formation, and seed dispersal in plants ## 6. EARTH AND HUMAN ACTIVITY - [Weather-Resistant Engineering](https://ai.page/c/weather-resistant-engineering/index.md): Understand that engineers design buildings, flood defences, and warning systems to protect communities from extreme weather — hurricane-resistant roofs, flood barriers, tornado shelters, and early-warning alert systems — and evaluate the merits of these solutions ## 7. EARTH’S SYSTEMS - [Earth's atmosphere](https://ai.page/c/earth-s-atmosphere/index.md): Develop a model to describe ways the geosphere, biosphere, hydrosphere, and atmosphere interact as connected Earth systems ## 8. ENERGY - [Power: watts and energy per second](https://ai.page/c/power-watts-and-energy-per-second/index.md): Define power as the rate of energy transfer (power = energy ÷ time, measured in watts), and compare energy transfer rates in different everyday contexts - [Energy stores and transfers](https://ai.page/c/energy-stores-and-transfers/index.md): Identify the main energy stores (kinetic, gravitational potential, elastic potential, thermal, chemical, nuclear, electromagnetic) and the pathways by which energy is transferred between stores (mechanically, electrically, by heating, by radiation) ## 9. MATTER AND ITS INTERACTIONS - [Reactions That Release or Absorb Heat](https://ai.page/c/reactions-that-release-or-absorb-heat/index.md): Distinguish between exothermic reactions (release energy, temperature rises) and endothermic reactions (absorb energy, temperature falls), with everyday and industrial examples - [Finite Resources & Recycling](https://ai.page/c/finite-resources-and-recycling/index.md): Explain that many raw materials (metals, fossil fuels, minerals) are finite resources, describe the environmental costs of extraction, and evaluate the benefits of recycling and the circular economy - [Ceramics, Polymers & Composites](https://ai.page/c/ceramics-polymers-and-composites/index.md): Describe the properties and uses of ceramics (hard, brittle, heat-resistant), polymers (flexible, lightweight, variable), and composites (combine properties of constituent materials), giving real-world examples of each ## Health: 0 of 100 Of its 20 own concepts: 0 have an explanation, 0 have practice, 0 have a measurement question, 0 have a checked version. Findings (each is a task for anyone's AI): - Variation in Species has no explanation yet - Genetic Mutation has no explanation yet - How Natural Selection Works has no explanation yet - Fossils as Evidence has no explanation yet - Evidence-Based Classification has no explanation yet - Hazard Assessment & Evacuation has no explanation yet - How Tectonic Plates Move has no explanation yet - The Carbon Cycle has no explanation yet - Atoms, Elements & Compounds has no explanation yet - Evidence for Evolution has no explanation yet - Life Changed Over Time has no explanation yet - Species Distribution & Change has no explanation yet - Plant Reproduction has no explanation yet - Weather-Resistant Engineering has no explanation yet - Earth's atmosphere has no explanation yet - Power: watts and energy per second has no explanation yet - Energy stores and transfers has no explanation yet - Reactions That Release or Absorb Heat has no explanation yet - Finite Resources & Recycling has no explanation yet - Ceramics, Polymers & Composites has no explanation yet Credit: The structure of Louisiana academic standards: Science (https://doe.louisiana.gov/docs/default-source/students-with-disabilities/k-12-louisiana-connectors-for-students-with-significant-disabilities.pdf?sfvrsn=c678971f_0); concepts from the Marble Skill Taxonomy (v1), © Generative Spark, Inc. (withmarble.com), text CC BY-SA 4.0, database ODbL 1.0: https://github.com/withmarbleapp/os-taxonomy, mapped to its standards by Marble.