This is a good informational site about Alkalinity. It gives a good explanation of it and some examples.

Use this site to review information about forces, concentrating on balanced and unbalanced forces. The information is provided in an interactive activity. There is also a factsheet presenting information on balanced and unbalanced forces, and a practice test.

Investigate the changing states of water as you help Steve stay alive while in the Arctic. Includes background information about changing states of matter and about the water cycle, as well as a quiz.

Save Earth from the evil villain who is draining all the life from it. Following the activity, read more about rocks and soil, and then take a quick quiz to check for understanding.

Find out which material will save Steve from getting shocked by the electric eels. Following the activity, read more about electrical conductors, and then take a quick quiz to check for understanding.

Use your knowledge about friction to help Carrie get to the Invigatron before someone steals it. Following the activity, read more about friction and resistance, and then take a quick quiz to check for understanding.

This landing page includes learning modules on the following topics of: animals, plants, microorganisms, life cycles and reproductions, food chains, habits, humans and the environment, adaptation, inheritance, and evolution.

In this video, first-grade students use a variety of sound makers to make noise (e.g.; clucker, voices, and tuning fork) and look for evidence that something is vibrating to make a sound. [6:07]

A collection of five interactive activities and labs to help young learners understand science, technology, engineering, and mathematics concepts while also actively experiencing the engineering design process. This resource includes both educator and family guides, materials lists, and extension activities. Activities include an introduction to scientists, engineering, and the design process; designing an oven; ice cream and slime; movement; and growing a plant.

On April 24, 1984, the Cleveland Museum of Natural History successfully hatched its first captive-bred eaglet. The years leading up to this milestone saw declining numbers of Bald Eagles in the wild—a consequence of the use of the pesticide DDT, as well as unregulated hunting. But our efforts helped to preserve this majestic species, which is now abundant throughout the state of Ohio and beyond. In this week’s Creature Feature, learn about Bald Eagles from Harvey Webster, the Museum’s Chief Wildlife Officer & Museum Ambassador. Worksheets available for grades PreK-K and 1-2.

An introductory lesson on the basics of heredity, and the inheritance of genetic traits. [7:57]

This Florida State University page includes an interactive java tutorial that explores the relationship between frequency, wavelength, and energy, and enables the visitor to adjust the intensity of the radiation and to set the wave into motion. There is also a discussion on electromagnetic waves that accompany the tutorial.

In this site from the physics classroom, kinetic energy is defined and discussed. The equation for its computation is also given and practice computation problems are given.

This video segment from the Nevada Department of Wildlife looks at various species of bats and how they impact the environment. [3:14]

This video segment describes how the Australopithecus afarensis skeleton known as Lucy could have been fossilized. Footage courtesy of NOVA: "In Search of Human Origins." [2:34]

This tutorial looks at the behavior of sound waves, specifically focusing upon sound interference and beats. Learn more about it and then take a short quiz to check your understanding.

Learn about the importance of wildlife in our lives. Look at the role of wildlife in natural processes, as well as in science, agriculture, and medicine. Also, discover how wildlife factors into the Canadian economy. Finally find out how we can sustain the benefits we have from wildlife and how we can preserve them for future generations. A list of resources completes the discussion.

Site provides the ABC's of nuclear science including radioactivity and gamma decay to fission and comic rays.

This article, reprinted from the fall 1979 LBL News Magazine, was written about Dr. Luis Alvarez and his part in the study of geological sediments and the great extinctions.

Visit this site for an interactive tour of the atom and all aspects of particle physics. View the animations available with almost every description on this site. A great place for the fundamentals of particles and forces including a fine glossary. Shows how scientists? views of the fundamentals have changed over time. Wow!