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Skills available for North Carolina eighth-grade science standards

Standards are in black and IXL science skills are in dark green. Hold your mouse over the name of a skill to view a sample question. Click on the name of a skill to practice that skill.

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Matter: Properties and Change

Energy: Conservation and Transfer

Earth Systems, Structures and Processes

  • NCES.8.E.1 Understand the hydrosphere and the impact of humans on local systems and the effects of the hydrosphere on humans.

    • NCES.8.E.1.1 Explain the structure of the hydrosphere including:

    • NCES.8.E.1.2 Summarize evidence that Earth's oceans are a reservoir of nutrients, minerals, dissolved gases, and life forms:

    • NCES.8.E.1.3 Predict the safety and potability of water supplies in North Carolina based on physical and biological factors, including:

      • Temperature

      • Dissolved oxygen

      • pH

      • Nitrates and phosphates

      • Turbidity

      • Bio-indicators

    • NCES.8.E.1.4 Conclude that the good health of humans requires:

      • Monitoring of the hydrosphere

      • Water quality standards

      • Methods of water treatment

      • Maintaining safe water quality

      • Stewardship

Earth History

  • NCES.8.E.2 Understand the history of Earth and its life forms based on evidence of change recorded in fossil records and landforms.

Structures and Functions of Living Organisms

  • NCES.8.L.1 Understand the hazards caused by agents of diseases that effect living organisms.

    • NCES.8.L.1.1 Summarize the basic characteristics of viruses, bacteria, fungi and parasites relating to the spread, treatment and prevention of disease.

    • NCES.8.L.1.2 Explain the difference between epidemic and pandemic as it relates to the spread, treatment and prevention of disease.

  • NCES.8.L.2 Understand how biotechnology is used to affect living organisms.

    • NCES.8.L.2.1 Summarize aspects of biotechnology including:

      • Specific genetic information available

      • Careers

      • Economic benefits to North Carolina

      • Ethical issues

      • Implications for agriculture


Evolution and Genetics

Molecular Biology

  • NCES.8.L.5 Understand the composition of various substances as it relates to their ability to serve as a source of energy and building materials for growth and repair of organisms.

    • NCES.8.L.5.1 Summarize how food provides the energy and the molecules required for building materials, growth and survival of all organisms (to include plants).

    • NCES.8.L.5.2 Explain the relationship among a healthy diet, exercise, and the general health of the body (emphasis on the relationship between respiration and digestion).

Structure and Functions of Living Organisms

  • NCES.Bio.1.1 Understand the relationship between the structures and functions of cells and their organelles.

  • NCES.Bio.1.2 Analyze the cell as a living system.

    • NCES.Bio.1.2.1 Explain how homeostasis is maintained in the cell and within an organism in various environments (including temperature and pH).

    • NCES.Bio.1.2.2 Analyze how cells grow and reproduce in terms of interphase, mitosis and cytokinesis.

    • NCES.Bio.1.2.3 Explain how specific cell adaptations help cells survive in particular environments (focus on unicellular organisms).


Evolution and Genetics

  • NCES.Bio.3.1 Explain how traits are determined by the structure and function of DNA.

  • NCES.Bio.3.2 Understand how the environment, and/or the interaction of alleles, influences the expression of genetic traits.

  • NCES.Bio.3.3 Understand the application of DNA technology.

    • NCES.Bio.3.3.1 Interpret how DNA is used for comparison and identification of organisms.

    • NCES.Bio.3.3.2 Summarize how transgenic organisms are engineered to benefit society.

    • NCES.Bio.3.3.3 Evaluate some of the ethical issues surrounding the use of DNA technology (including cloning, genetically modified organisms, stem cell research, and Human Genome Project).

  • NCES.Bio.3.4 Explain the theory of evolution by natural selection as a mechanism for how species change over time.

    • NCES.Bio.3.4.1 Explain how fossil, biochemical, and anatomical evidence support the theory of evolution.

    • NCES.Bio.3.4.2 Explain how natural selection influences the changes in species over time.

    • NCES.Bio.3.4.3 Explain how various disease agents (bacteria, viruses, chemicals) can influence natural selection.

  • NCES.Bio.3.5 Analyze how classification systems are developed based upon speciation.

    • NCES.Bio.3.5.1 Explain the historical development and changing nature of classification systems.

    • NCES.Bio.3.5.2 Analyze the classification of organisms according to their evolutionary relationships (including dichotomous keys and phylogenetic trees).

Molecular Biology