Seventh Grade Science
Seventh grade science is interdisciplinary in nature; however, much of the content focus at this grade level is on organisms and environments. A complete description of the middle school science Texas Essential Knowledge and Skills can be found at the Texas Education Agency web site. Some of the knowledge and skills emphasized in seventh grade are described below.
In the area of matter and energy, students will recognize that radiant energy from the Sun is transformed into chemical energy through the process of photosynthesis; diagram the flow of energy through living systems; identify that organic compounds contain carbon and other elements; and distinguish between physical and chemical changes in matter in the digestive system. In the area of force, motion, and energy, students will contrast situations where work is related to varying amounts of force.
In the area of earth and space, students will analyze the effects of weathering, erosion, and deposition on the environment in ecoregions of Texas; model the effects of human activity on groundwater and surface water in a watershed; and analyze the characteristics of objects in our solar system that allow life to exist.
In the area of organisms and environments, students will describe how different environments support different varieties of organisms and how biodiversity contributes to the sustainability of an ecosystem; describe the role of ecological succession. Students will examine organisms or their structures and identify some changes in genetic traits that have occurred over several generations. They will identify the main functions of the systems of the human organism; differentiate between structure and function in plant and animal cell organelles, and recognize levels of organization in plants and animals. Students will compare the results of uniform or diverse offspring from sexual reproduction or asexual reproduction; and recognize that inherited traits of individuals are governed in the genetic material found in the genes within chromosomes in the nucleus.