Natural Resources and EcosystemsSTEP Participant home page
7(8) Earth and space. The student knows that natural events and human activity can impact Earth systems. The student is expected to:
(A) predict and describe how different types of catastrophic events impact ecosystems such as floods, hurricanes, or tornadoes;
(B) analyze the effects of weathering, erosion, and deposition on the environment in ecoregions of Texas; and
(C) model the effects of human activity on groundwater and surface water in a watershed.
Watersheds and human impact activities
Connecting Classrooms and Communities through Watersheds:
This unit includes four 50-minute classes and a service-learning project all focusing on watersheds.
Pollution through Watersheds:
Students model how non-point source pollutants can travel through a watershed.
Impervious vs Pervious Surfaces:
Students model how different land uses in a watershed can affect surface runoff.
“Who Dirtied the Water?,” Museum of Science and Industry
Children are read the story of an imaginary place, where the activities of wildlife and people influence the area’s lake. At a key point in the story, each child adds a “pollutant” to the “lake” — usually eliciting an “ewwww!” from the audience! An aquarium or other large container is used to simulate the lake, and common materials like paper, vinegar, and molasses represent the pollutants. The story is used to start a conversation about pollution in our lakes, rivers, oceans, and groundwater. Appropriate for ages 8–13.
A NASA educational activity building a water filtration system to clean the dirty water.
- Powerpoint on weathering, erosion, and deposition by ecoregion (incorporates content by lseman at Catastrophic Events Impact on Ecosystems)
- Powerpoint on weathering, erosion, and deposition by ecoregion
- Websites of activities, powerpoints, and information on this topic