It's About Time
Energy Flow in Ecosystems
Emerging biochemists more fully understand the flow of energy in ecosystems as they explore the laws of thermodynamics and relate them to energy transfer in food chains. They also investigate heat loss from the human body and how...
CPO Science
Potential and Kinetic Energy
Here's a resource ideal for independent learners who need extra reinforcement or would like to work ahead. These textbook chapters and practice problems cover many basic physics concepts, starting with potential and kinetic energy and...
National Institute of Open Schooling
Chemical Kinetics
Not all chemical reactions happen at the same rate because some, like explosions, occur quickly and some, like rusting, occur over time. Here, learners explore chemical reactions and their rates in the 16th lesson of 36. Through readings...
Brooklyn Children’s Museum
Inside India
What can a Ganesh statue, hand ornament, and print block tell you about India? Introduce your learners to the geography, history, and culture of India by analyzing primary sources and using the well-designed worksheets provided in this...
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...
National Institute of Open Schooling
Chemical Equilibrium
Le Chatelier's interest in thermodynamics and building materials such as cement and plaster led to the Le Chatelier Principle in 1884. Activity 13 in a series of 36 extensively explores chemical equilibrium. Learners read about...
National Institute of Open Schooling
d-Block and f-Block Elements
Potassium permanganate, containing manganese one of the transition elements, has many uses such as mouthwash and propelling rockets, making it is a very diverse compound. The lesson delves into such transition elements and...
Georgia State University
Georgia State University: Hyper Physics: Photoelectric Effect
Using graphics, words and numbers, the photoelectric effect is described and explained. Planck's theory about quanta of light is explained. Photon energies for the various regions of the EM spectrum are listed. An interactive JavaScript...