NASA
Nasa: Introduction to Clouds [Pdf]
NASA is interested in clouds because they are an integral part of the water cycle, and because they are a controlling factor in the energy budget of the Earth. This chart provides a basic introduction to the identification of clouds. The...
Huntington Library
Huntington Library: Making Community Measurements: Abiotic Factors [Pdf]
A lesson plan in which students explore plant communities and observe different types of soil and weather conditions in an attempt to determine cause and effect relationships. Includes discussion questions, extension activities and web...
Polk Brothers Foundation Center for Urban Education at DePaul University
De Paul University: Center for Urban Education: Plants and Places [Pdf]
"Plants and Places" is a one page, nonfiction passage about how plants fit the types of environment they live in such as cactus like hot, dry weather and live in Arizona. The state flowers fit the climate of the states. It is followed by...
NOAA
Noaa: Tornadoes, Nature's Most Violent Storms
This page, put out by the National Weather Service, thoroughly explains the causes and types of tornadoes. Tornado safety is covered in the form of warning signs and what you can do to stay safe both in school and at home. The full...