ISLAND

Island are bodies of land surrounding by water.Continents are islands in the strict sense of the words differing from other island only in size.
Classification of Islands:

Islands are classified in
(a) Continental Islands

(b) Oceanic Islands

(c) Coral Islands
Coral formation is of three types:

1) Fringing Reefs

2) Barrier Reefs

3)Atolls

All About Eclipses

An eclipse is defined as an astronomical event that occurs when one celestial object moves into the shadow of another, partially or fully obscuring it from view.
An eclipse on Earth occurs when the Sun, the Earth and the moon are all in a line together. The two primary types of eclipses seen from Earth are the solar eclipse and the lunar eclipse. These two types of eclipses can then be broken down into four different types; a total eclipse, partial eclipse, annular eclipse or hybrid eclipse.
The term solar eclipse describes the occurrence of when the moon travels between the Sun and the Earth, blocking the Sun’s light from the Earth in the middle of the day, and generally giving the appearance of a ring of light in the darkened sky.
During a lunar eclipse, the moon moves into the shadow of the Earth during night time hours, gradually blocking the view of the moon form the Earth. Eclipses have also been known to occur on other planets as well. On Earth, there can be anywhere from four to seven eclipses of varying degrees within any given year.
For more eclipse information on both lunar and solar eclipses, simply select any eclipse article, eclipse picture or other interactive eclipse feature below.

Types of waterfalls

Block: Water descends from a relatively wide stream or river.
Cascade: Water descends a series of rock steps.
Cataract: A large waterfall.
Fan: Water spreads horizontally as it descends while remaining in contact with bedrock.
Horsetail: Descending water maintains some contact with bedrock.
Plunge: Water descends vertically, losing contact with the bedrock surface.
Punchbowl: Water descends in a constricted form, then spreads out in a wider pool.
Segmented: Distinctly separate flows of water form as it descends.
Tiered: Water drops in a series of distinct steps or falls.
Multi-step: A series of waterfalls one after another of roughly the same size each with its own sunken plunge pool.