Map of selected observations in Dade county. The roof sign says it all! Homestead Fl. Satellite pictures and upper-air data indicate that Hurricane Andrew formed from a tropical wave that crossed from the west coast of Africa to the tropical North Atlantic Ocean on 14 August The wave moved westward at about 20 kt, steered by a swift and deep easterly current on the south side of an area of high pressure.
The point where two or more plates meet is known as a plate boundary. It is at these locations where earthquakes, volcanoes and fold mountain form. There are four main types of plate boundary. These are constructive, destructive, conservative and collision margins.
Thin-film interference is a natural phenomenon in which light waves reflected by the upper and lower boundaries of a thin film interfere with one another, either enhancing or reducing the reflected light. When the thickness of the film is an odd multiple of one quarter- wavelength of the light on it, the reflected waves from both surfaces interfere to cancel each other. Since the wave cannot be reflected, it is completely transmitted instead. When the thickness is a multiple of a half-wavelength of the light, the two reflected waves reinforce each other, increasing the reflection and reducing the transmission. Thus when white light, which consists of a range of wavelengths, is incident on the film, certain wavelengths colors are intensified while others are attenuated.
Constructive plate margins happen where plates move apart. Most of these plate margins are under the oceans. The rising magma forms shield volcanoes. Constructive tensional plate margins occur where plates move apart. Constructive boundaries are mainly located under the sea, e.