Posted by: Hilary on: February 28, 2010
Why and what earthquake is? Many people living around the world have at one time or another experienced an earthquake. Most earthquakes occur as the result of slowly accumulating pressure that causes the ground to slip abruptly along a geological fault plane on or near a plate boundary. The resulting waves of vibration within the [...]
Posted by: Hilary on: February 2, 2010
No wonder that creating airplanes man watched birds trying to find the secret of their fly. As the wings move through the air (blue lines), the special airfoil shape of the wings causes the air pressure above the wings to be lower than the pressure underneath. The difference in pressure is lift, a force that [...]
Posted by: Hilary on: October 23, 2009
Wind is simply moving air. If there wasn’t any wind, weather reports wouldn’t be very interesting, as there would be little change in day-today weather. Wind is produced by pressure differences.
In this activity, students will produce a region of high pressure and then see how this high pressure causes air to flow to a region [...]
Posted by: Hilary on: September 19, 2009
Learning different kind of fruits together with your kids you can also try to make your kids eat more fruits and vegetables. Besodes that this is good idea to mix fruit juice with different kind of fruits and add a little ice cube put them in the blender to make smoothies. Sometime it’s easier [...]