National Institute of Open Schooling
Chemical Thermodynamics
All chemical reactions require energy. To explore thermodynamics, classes read and discuss its laws, exothermic and endothermic reactions, enthalpy in many forms, calculate enthalpy problems, and use Hess' Law to calculate enthalpy of a...
National Institute of Open Schooling
Radioactive Pollution
Radioactive pollutants can enter the body through ingestion, inhalation, absorption, or injection. The last lesson in a series of 36 introduces pupils to radioactive pollution. They study its sources, both natural and man-made, its...
Khan Academy
Khan Academy: Light and Photosynthetic Pigments
What is light energy? Here we'll learn about the properties of light and how pigments such as chlorophylls absorb light energy.
Physics Classroom
The Physics Classroom: Blue Skies and Red Sunsets
This high school resource shows how the blue of the skies and the red of the sunsets can be explained by the interaction of sunlight with atmospheric particles which causes scattering of light.
Oklahoma Mesonet
Oklahoma Climatological Survey: Overview of Radiation
This site details what radiation is, the physics of radiation, and radiative transfer as it occurs in nature. Content explores the electromagnetic spectrum, electromagnetic waves, properties of radiation, and solar radiation.
Alberta Online Encyclopedia
Alberta Online Encyclopedia: Photosynthesis
In this encyclopedia entry, you will find concise text explaining photosynthesis supplemented by a very detailed diagram of the process.
Arizona State University
Asu: Introduction to Photosynthesis and Its Applications
This extremely detailed article begins with a basic introduction of photosynthetic processes and expands to more complex applications and related scientific ideas.
University of Illinois
University of Illinois: The Photosynthetic Process
Site describes process of photosynthesis, including role of pigment molecules, electron transport, ATP synthesis, and carbohydrate synthesis. Includes links to illustrative graphics.