Objective:
To demonstrate how a black hole may be formed.

Standards:
Objects in the Sky (sky object properties, locations, and movements), Origin and Evolution of the Universe (star and galaxy formation; how stars produce energy and the formation of all elements), and Motions and Forces (gravitation properties and predicting its strength).

Materials:
two small, [...]

Flight

How does an airplane take off?
When an aircraft moves into the wind, the wings cut the airflow in half. Some air travels above the wing, some air travels below the wing as shown in the picture on the left.

Plane wings are build to be curved on top and flat on the bottom. The wind, or [...]

Project Ideas
How electroplating and electrotyping are done.It will be recalled that in the gravity cell, in which there was a solution of copper sulphate, a layer of copper was deposited on the copper electrode.By this process the electrode was really copper-plated.Copper plate some object such as a piece of tin or nickel as follows.
Copper [...]

How do Plants know which way to grow?
If you’ve ever planted seeds in the ground, perhaps you have wondered just how do they know which way to grow. How do the roots know to grow down and how do the stems and leaves know to grow up?
What You’ll Need:
There are two parts to this experiment. [...]