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Skills available for Utah seventh-grade science standards

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1 Students will understand the structure of matter.

  • 1 Describe the structure of matter in terms of atoms and molecules.

  • 2 Accurately measure the characteristics of matter in different states.

    • a Use appropriate instruments to determine mass and volume of solids and liquids and record data.

    • b Use observations to predict the relative density of various solids and liquids.

    • c Calculate the density of various solids and liquids.

    • d Describe the relationship between mass and volume as it relates to density.

    • e Design a procedure to measure mass and volume of gases.

  • 3 Investigate the motion of particles.

    • a Identify evidence that particles are in constant motion.

    • b Compare the motion of particles at various temperatures by measuring changes in the volume of gases, liquids, or solids.

    • c Design and conduct an experiment investigating the diffusion of particles.

    • d Formulate and test a hypothesis on the relationship between temperature and motion.

    • e Describe the impact of expansion and contraction of solid materials on the design of buildings, highways, and other structures.

2 Students will understand the relationship between properties of matter and Earth's structure.

  • 1 Examine the effects of density and particle size on the behavior of materials in mixtures.

    • a Compare the density of various objects to the density of known earth materials.

    • b Calculate the density of earth materials (e.g., rocks, water, air).

    • c Observe and describe the sorting of earth materials in a mixture based on density and particle size (e.g., sorting grains of sand of the same size with different densities, sort materials of different particle size with equal densities).

    • d Relate the sorting of materials that can be observed in streambeds, road cuts, or beaches to the density and particle size of those materials.

    • e Design and conduct an experiment that provides data on the natural sorting of various earth materials.

  • 2 Analyze how density affects Earth's structure.

    • a Compare the densities of Earth's atmosphere, water, crust, and interior layers.

    • b Relate density to the relative positioning of Earth's atmosphere, water, crust, and interior.

    • c Model the layering of Earth's atmosphere, water, crust, and interior due to density differences.

    • d Distinguish between models of Earth with accurate and inaccurate attributes.

3 Students will understand that the organs in an organism are made of cells that have structures and perform specific life functions.

4 Students will understand that offspring inherit traits that make them more or less suitable to survive in the environment.

  • 1 Compare how sexual and asexual reproduction passes genetic information from parent to offspring.

    • a Distinguish between inherited and acquired traits.

    • b Contrast the exchange of genetic information in sexual and asexual reproduction (e.g., number of parents, variation of genetic material).

    • c Cite examples of organisms that reproduce sexually (e.g., rats, mosquitoes, salmon, sunflowers) and those that reproduce asexually (e.g., hydra, planaria, bacteria, fungi, cuttings from house plants).

    • d Compare inherited structural traits of offspring and their parents.

  • 2 Relate the adaptability of organisms in an environment to their inherited traits and structures.

5 Students will understand that structure is used to develop classification systems.

  • 1 Classify based on observable properties.

    • a Categorize nonliving objects based on external structures (e.g., hard, soft).

    • b Compare living, once living, and nonliving things.

    • c Defend the importance of observation in scientific classification.

    • d Demonstrate that there are many ways to classify things.

  • 2 Use and develop a simple classification system.

  • 3 Classify organisms using an orderly pattern based upon structure.

    • a Identify types of organisms that are not classified as either plant or animal.

    • b Arrange organisms according to kingdom (i.e., plant, animal, monera, fungi, protist).

    • c Use a classification key or field guide to identify organisms.

    • d Report on changes in classification systems as a result of new information or technology.