Answer:
A group or a chain of islands is called archipelago.
Explanation:
The seas and oceans are not just open spaces of water with nothing interrupting them, instead they have hundreds of thousands or even millions of islands rising from them. The islands vary in size, and what can be considered as an island is still debatable, but they can be anywhere from few tens of meters to hunderds of thousands of square km.
The chains or groups of islands are called archipelago. In order to distinguish them from one another they have to have some similraties and most often they need to have the same geological history and processes that created them. An archipelago can be formed in multiple ways. Along the subduction zones there are always archipelagoes, and this is due to the volcanic activity. Another creator of archipelagoes are the hot spots because they are static but the plates move on top of them, thus draging the islands from the hot spot and new rising above it. Also, if the characteristics of the topography of an area are such that when the sea levels rise, there can be a formation of an archipelago where the lower areas will be under water while the higher places would remain above water.
Jupiter, Uranus, Neptune, and Mars.
Answer: B.
Air pressure decreases as you increase in altitude.
Explanation:
Gravity pulls the gas molecules towards the center of the earth. This pull of gravity becomes stronger and closer to the center at sea level. Air becomes dense at sea level where the gravitational pull is stronger. Gases at the sea level are also compressed by the weight of the atmosphere above them. The force of the earth weighing down over a unit air is known as atmospheric pressure. At higher altitudes, the atmospheric pressure is lower and the air is less dense than at higher altitude.
Answer:
SW
Explanation:
When a hurricane intensifies and the wind speed increases, an eye begins to form in the center of the storm. This normally occurs once the winds reach about 80 mph. Almost always the eye is circular when viewed from above, and measures about 20 to 40 miles in diameter. It looks cylindrical in a cross section of the storm, and extends through the center of the storm like a chimney. The air over the storm sinks through the center of the eye.
Hurricanes are formed from centers of low atmospheric pressures in warm waters around which strong air currents begin to circulate.
When ocean water heats up, the air rises and swirls to fill the low pressure that this creates.
This causes the air to be sucked in and up, which reinforces the low pressure in the center.
Thus, when the wind speed increases to 128 km / h, a kind of "vacuum" is created that meteorologists call "eye", since it has an almost circular shape.
