The axolotl is a Mexican salamander with an incredible ability: Cut its leg off, and the limb will grow right back! How it does this and why humans can't is still a bit of a mystery. Researchers like Susan Bryant of UC Irvine are studying these amphibians to understand the underlying mechanisms for their miraculous regenerative powers.
By popping their brightly coloured air-sacs male sage grouse create a sound that can carry three km to attract females to their display ground.
In this video Paul Andersen will first define momentum as the product of an objects mass and velocity. He will then demonstrate how a net force acting on an object will change the momentum in the direction of the force. Several problems will be included.
Use the calculator to estimate your yearly dose from the most significant sources of ionizing radiation.
Two clear liquids are mixed together and the audience is told to watch closely... "Don't take your eyes off the liquid or you'll miss it!" Then, in a flash, the water changes to ink (or so they think!). Clock reactions like this never fail to capture the students attention, and the Iodine Clock Reaction is one of the most startling chemical demonstrations you'll ever see. How did that happen? is almost always the reaction, and when students ask How?, theyre ready to learn.
Learn the basics of gas with this informative video. Gases are compressible, they diffuse and expand to occupy the volume of their container fully.
Use an air hockey table to investigate simple collisions in 1D and more complex collisions in 2D. Experiment with the number of discs, masses, and initial conditions. Vary the elasticity and see how the total momentum and kinetic energy changes during collisions.
See how changing the concentration affects reaction rate by using this online tool
HAS SPACE ALWAYS BEEN BLACK? As long as we've been around, YES. But the universe gets much more exciting, AND much BRIGHTER, as we start winding our clocks back to the early days of the universe. Near the beginning of the universe, when space was rapidly expanding, that dark night sky we know so well as actuallyÉORANGE! But why? Did the lights just go out, or did something more spectacular happen? Watch this episode of PBS Space Time and find out!
A 25,000 mile line along the Pacific Rim, known as the "ring of fire," is the most geologically active place on earth. Harry Smith reports on why it's so dangerous and the damage it has done.
EcoForesters is a non-profit professional forestry organization dedicated to conserving and restoring our Appalachian forests through education and stewardship