C. Fill in the blanks.
1. The Atlantic Ocean is a part of
2. Almost the whole of Africa appears to be a huge
3. North America is the
largest continent in the world,
4. The Mulattos in South America are a mixed race of
5. The density of air
with rise in height
and
3 GNOGRAPHY
Answers
Answer:
1)
As the continents are approached and the rugged Mid-Atlantic Ridge is left behind, an abyssal plain first is encountered, followed by the smooth, undulating surface of the continental rise. These broad embankments, which lie at depths of some 8,000 to 15,000 feet (2,400 to 4,500 metres) at the foot of continents, reach more than 300 miles (500 km) in width off northwestern Africa, Angola, Argentina, and the Eastern Seaboard of the United States. In other areas they are exceedingly narrow. Millions of years of weathering, erosion, and riverine sediment deposition have contributed to creating the sloping continental rises that are characteristic of the Atlantic basin. It is beneath these slopes—in accumulations 10,000 to 50,000 feet (3,000 to 15,000 metres) thick—that some of the largest potential reserves on Earth of petroleum, natural gas, and coal are found.
The Lesser Antilles and the South Sandwich Islands form large unstable island arcs, where the greatest depths of the Atlantic are found in steep-sided, narrow gashes that drop to more than 25,000 feet (7,600 metres) below sea level and more than 10,000 feet (3,000 metres) below the floors of adjacent basins. Depths greater than 13,000 feet (4,000 metres) occur in the Caribbean basin, which has numerous shallow and several deep connections with the open ocean, and in a few parts of the Mediterranean Sea, which communicates with the Atlantic only through the Strait of Gibraltar. The strait is about 8 miles (13 km) wide at its narrowest point, and the maximum depth on its sill (submarine ridge between basins) is only a little more than 1,000 feet (300 metres). The partial isolation of the large seas adjacent to the Mediterranean has a profound effect on the conditions in the seas themselves, as well as in the open ocean
5)Altitude is height above sea level. The density of air decreases with height. There are two reasons: at higher altitudes, there is less air pushing down from above, and gravity is weaker farther from Earth's center. So at higher altitudes, air molecules can spread out more, and air density decreases (Figure below
3)it is false it is 3 rd.North America is where area and population diverge in their rankings because this continent's population is not growing as fast as Asia's. North America is third in area at 9.4 million square miles (24.5 million square kilometers).1 However, it's fifth on the list in population with 369 million people.4
North America boasts Lake Superior, the largest freshwater lake in the world. One of the Great Lakes, Superior covers more than 31,700 square miles (82,100 square kilometers) between the United States and Canada.
4)Africans were transported by Portuguese slave traders to Spanish America starting in the early 16th century. Offspring of European Spaniards and African women resulted early on in mixed-race children, termed Mulattos.
Brazil: c. 91 million, multiracial, multigenerational, including Native American ancestry, ...
South Africa: c. 4.6 million (2011)
Colombia: c. 8 million
United States: c. 1.8 million (2010)