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7th Grade Science Humble ISD Curriculum Year-At-A-Glance Enduring Understandings What students will learn: • All living things move, respond, obtain and use energy, are made up of cells, grow/reproduce, and have a set life span. • Living organisms must be able to maintain balance. • All organisms are made up of smaller units called cells. Cell theory states that all cells come from pre-existing cells. Cells carry on similar functions such as extracting energy from food to sustain life. • Inherited traits are governed by genetic material found on genes in the chromosomes in the nucleus. Traits are passed from generation to generation from parents to offspring. • Sexual reproduction results in more diverse offspring while asexual reproduction results in more uniform offspring. • Human organ systems have specialized cell and tissue functions that perform work to maintain life. • Compounds that contain carbon are called organic compounds. All living things are made up of organic compounds. • An adaptation is a genetic characteristic, either physical or behavioral, that allows organisms to survive and reproduce. • Natural selection and breeding, acting on variations of traits within a population, create biodiversity of life through gradual processes over many generations. • Earth has a variety of environmental conditions that support diverse forms of life. • The relationships of organisms in the environment depend on factors in the environment. • The Sun is our ultimate source of energy. Radiant energy is transformed by plants into chemical energy in the form of glucose, in a process called photosynthesis. • Photosynthesis is a chemical reaction that uses carbon dioxide, water, and solar energy to produce glucose and oxygen. • Catastrophic events lead to disruptions in the natural environment and impact ecosystems. • Ecological succession is the dynamic and predictable transition of organisms that make up a community after a disturbance • There are different eco-regions in Texas and each of these regions support a wide range of ecosystems, soil types and land features. • Weathering, erosion, and deposition shape the characteristic soil and topography of each ecoregion of Texas. • A watershed is an area of land from which water flows into a larger body of water such as a river, lake, stream, ocean, or aquifer. Humble ISD 7th Grade Science Mission: To foster an environment where students work collaboratively to expand knowledge in all disciplines of science. To provide students a science foundation with knowledge and skills that will allow them to be successful in the high school sciences and scientifically literate citizens. Bundle1 Bundle 2 Bundle 3 Bundle 4 Characteristics of Life (10 Weeks) Human Body Systems (10 Weeks) Organisms and the Environment (7 Weeks) Earth and Space (10 Weeks) Characteristics of Life Integumentary Systems Evolution and Adaptations Impact on Ecosystems – Catastrophic Events Cell Theory/Cell Structure and Function Muscular and Skeletal System Biomes/ Biodiversity Kingdoms Reproduction and Heredity Digestive and Excretory Systems Energy Flow Ecological Succession Circulatory and Respiratory Systems Watersheds and Groundwater Nervous and Endocrine Systems Accommodations for Space Explorations Scientific process skills such as experimental design, drawing conclusions, measurement, and models will be taught and assessed within content bundles. Year at a Glance Knowledge and Skills What student will do in the classroom and beyond: • Identify that organic compounds contain carbon and other elements such as hydrogen, oxygen, phosphorus, nitrogen, or sulfur. • Recognize levels of organization in plants and animals. • Differentiate between structure and function in plant and animal cell organelles, including cell membrane, cell wall, nucleus, cytoplasm, mitochondrion, chloroplast, and vacuole. • Recognize that radiant energy from the Sun is transformed into chemical energy through the process of photosynthesis. • Recognize that according to cell theory all organisms are composed of cells and cells carry on similar functions such as extracting energy from food to sustain life. • Define heredity as the passage of genetic instructions from one generation to the next generation. • Compare the results of uniform or diverse offspring from sexual reproduction or asexual reproduction. • Recognize that inherited traits of individuals are governed in the genetic material found in the genes within chromosomes in the nucleus. • Identify the main functions of the systems of the human organism. • Distinguish between physical and chemical changes in matter in the digestive system. • Contrast situations where work is done with different amounts of force to situations where no work is done such as moving a box with a ramp and without a ramp, or standing still. • Identify some changes in genetic traits that have occurred over several generations through natural selection & selective breeding. • Describe how biodiversity contributes to the sustainability of an ecosystem. • Examine organisms or their structures such as insects or leaves and use dichotomous keys for identification. • Observe and describe how different environments, support different varieties of organisms. • Observe, record, and describe the role of ecological succession such as in a microhabitat of a garden with weeds. • Diagram the flow of energy through living systems, including food chains, food webs, and energy pyramids. • Predict and describe how different types of catastrophic events impact ecosystems. • Model the effects of human activity on groundwater and surface water in a watershed. Rev 8/13