Question

E. Answer these questions.
1. How many major and minor plates are there? What is the source of energy for the movement
of these plates?
2. What is the latitudinal and longitudinal extent of North America?
3. Name the four physical divisions of North America.
4. Name five minerals found in the Canadian Shield.
5. Write the names of the Great Lakes. Which is the largest among the Great Lakes?​

Answer 1

Explanation:

1.Most of the Earth is covered by seven major plates and another eight or so minor plates. The seven major plates include the African, Antarctic, Eurasian, North American, South American, India-Australian, and the Pacific plates. Some of the minor plates include the Arabian, Caribbean, Nazca, and Scotia plates.

The energy source for plate tectonics is Earth's internal heat while the forces moving the plates are the “ridge push” and “slab pull” gravity forces. It was once thought that mantle convection could drive plate motions.

2.54.5260° N, 105.2551° W

3.ans.North America can be divided into five physical regions: the mountainous west, the Great Plains, the Canadian Shield, the varied eastern region, and the Caribbean. Mexico and Central America's western coast are connected to the mountainous west, while its lowlands and coastal plains extend into the eastern region

4.

The Canadian Shield is one of the world's richest areas in terms of mineral ores. It is filled with substantial deposits of nickel, gold, silver, and copper. Throughout the Shield there are many mining towns extracting these minerals. The largest, and one of the best known, is Sudbury, Ontario.

5.Lake Superior is the second-largest lake in the world by area, and the largest freshwater lake by surface area. Lake Michigan is the largest lake that is entirely within one country.