This slide show provides information to guide pesticide users in applying pesticides in a manner that will protect groundwater as much as possible from contamination. The slide show covers properties of pesticides, soil, and groundwater that are likely to worsen contamination and provides suggestions for handling and applying them. Other topics include basic geology of groundwater and potential health ... Full description.

In this activity, students construct a "comet" from ingredients similar to those found in actual comets. They will learn about the behavior of a real comet by observing their model as the dry ice sublimates, and understand the concept of scale as they compare the size of their model to the size of a real comet. A list of materials and instructions are provided. This activity can be performed as a ... Full description.

In this lesson plan students observe a teacher-directed demonstration that provides a conceptual understanding of latent heat. A reusable handwarmer that uses a solution of sodium acetate is used to illustrate phase changes and the release of energy and latent heat. Full description.

The Federal Emergency Management Agency (FEMA) deals with natural hazards such as hurricanes, floods, national security matters, winter storms, etc. in a non-threatening scientifc and fun manner for children. The site includes animations, videos, games, quizzes and questions areas that address hazardous situations that children may face at any given time. Full description.

This module on measuring nitrates and their effects on water quality is from a larger series on water quality investigations. It provides background information on nitrates and how it affects water quality. It also contains both a pre-test and post-test, a laboratory investigation, and a self-study game. The purpose of the site is to help students understand the sources of nitrates and the role that ... Full description.

This module on measuring temperature and its effects on water quality is from a larger series on water quality investigations. The purpose of the site is to help students recognize that temperature can affect the organisms that live in water, describe the factors that can change the temperature of a body of water, and how to measure, graph, and interpret the effects of temperature on fish. It provides ... Full description.

This slide show explores the threats to the Chinook salmon population in the Stillaguamish River watershed of Snohomish County, Washington. Topics include the status of the present population, factors contributing to the decline of the population, habitat needs for healthy salmon, and steps that are necessary for the recovery of the population. Full description.

Visitors to the ImageBank can view and download photographs, remote imagery, and slide shows. The images are related to earth and space science topics such as dinosaurs, earthquakes, volcanoes, rocks and minerals, mining and petroleum, groundwater, planets and astronomical phenomena, and others. The site contains thousands of images and is searchable by category, continent, country, or keyword. A ... Full description.

This community education initiative supports the efforts of Native American tribal leaders, educators, and students to develop contemporary, scientifically accurate, and culturally sensitive water education resources, programs, and networking opportunities. A traveling exhibit provides a Native American point of view on protection and conservation of water resources. A teachers' guide is provided ... Full description.

In this activity, younger students investigate the effects of acid rain. They will view photos of buildings and statues that have been damaged by acid rain, and conduct an experiment in which they treat a chalk 'statue' with vinegar and observe the effects. Full description.