Nature

What continent has the most deserts?

Antarctica, on average, is the coldest, driest, and windiest continent, and has the highest average elevation of all the continents. Antarctica is considered a desert, with annual precipitation of only 200 mm (8 inches) along the coast and far less inland.

Which month has the most sunlight in the northern hemisphere?

In the Northern Hemisphere, winter generally begins on December 21 or 22. This is the winter solstice, the day of the year with the shortest period of daylight. Summer begins on June 20 or 21, the summer solstice, which has the most daylight of any day in the year.

Why is it called the Continental Divide?

The Continental Divide, also called the Great Divide, is a natural boundary line separating waters that flow into the Atlantic Ocean or Gulf of Mexico from those that flow into the Pacific Ocean. It runs north-south from Alaska to northwestern South America.

How many different types of trees are there in the world?

There are about 750 types of trees in North America and about 100,000 in the world. Many of those are endangered. Those numbers count both conifer (cone bearing) trees and deciduous trees. You can find the names of many conifers on this site … just click Tree Types in the Elementary section.

What igneous rock can float on water?

Pumice is composed of highly microvesicular glass pyroclastic with very thin, translucent bubble walls of extrusive igneous rock.

What makes a wave break?

As the water begins to get shallower, water movement is slowed by friction against the bottom. The waves are slowed down and pushed together. That makes each wave steeper, especially on its front side. As the water gets shallower, the waves get steeper and steeper until they fall over and break on the front side.

What causes the color of the red sea?

Located between the East African coast and the Saudi Arabian peninsula, the Red Sea got its name because of a type of algae called Trichodesmium erythraeum, which is found in the sea. When these blooms of algae die off they appear to turn the blue-green color of the ocean to a reddish-brown.