The Pacific Islands <br />Physical Geography (20.3)<br />
Objectives<br />1.  Examine features of high islands and low islands.<br />2.  Learn about the three main island groups.<b...
Key Terms<br />1.  High Island<br />2.  Low Island<br />3.  Atoll<br />4.  Coral<br />
High Island<br />An island formed from the mountainous top of an ancient volcano.<br />
Low Island<br />An island formed from coral reefs or atolls.<br />
Atoll<br />A small coral island in the shape of a ring. <br />
Coral<br />A rock-like material made up of the skeletons of tiny sea creatures, most plentiful in warm ocean water.<br />
The Pacific Islands<br />The thousands of islands in the Pacific Ocean are divided into three groups.<br />Melanesia “Blac...
The Pacific Islands<br />
High Islands<br />High islands are mountainous and have been formed by volcanoes.<br />The soil is very fertile and they c...
Low Islands<br />Low Islands are made up of coral reefs or atolls.<br />Atolls are are small coral islands in the shape of...
Low Islands<br />Low islands have this shape and low elevation because they are coral reefs.<br />Coral is a rocklike mate...
Melanesia<br />Melanesia is the island group with the most people.<br />Melanesia is north and east of Australia.<br />Mos...
Melanesia <br />
Micronesia<br />Micronesia is made up of mostly low islands.<br />Most of Micronesia’s islands are north of the Equator.<b...
 Micronesia<br />
Polynesia<br />Polynesia is the largest island group in the Pacific.<br />Polynesia includes Hawaii.<br />Dense rain fores...
Polynesia<br />
Climate<br />The Pacific islands lie in the tropics, so temperatures are hot year-round.<br />The ocean winds keep the tem...
Vegetation<br />Because of the high temperatures, plentiful rainfall, and fertile soil, high islands have rich vegetation....
Vegetation<br />Savanna<br />Tropical Rain Forest<br />
Natural Resources<br />The Pacific island region has few natural resources.<br />The coconut palm is the most important re...
Natural Resources<br />Sugar Cane<br />Copra<br />
Tourism<br />The Pacific islands’ most valuable resource may be their natural beauty.  <br />Tourism provides a key source...
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The Pacific Islands Physical Geography20.3

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The Pacific Islands Physical Geography20.3

  1. 1. The Pacific Islands <br />Physical Geography (20.3)<br />
  2. 2. Objectives<br />1. Examine features of high islands and low islands.<br />2. Learn about the three main island groups.<br />3. Find out what kind of climate and vegetation the islands have.<br />4. Discover how land is used in the Pacific Islands. <br />
  3. 3. Key Terms<br />1. High Island<br />2. Low Island<br />3. Atoll<br />4. Coral<br />
  4. 4. High Island<br />An island formed from the mountainous top of an ancient volcano.<br />
  5. 5. Low Island<br />An island formed from coral reefs or atolls.<br />
  6. 6. Atoll<br />A small coral island in the shape of a ring. <br />
  7. 7. Coral<br />A rock-like material made up of the skeletons of tiny sea creatures, most plentiful in warm ocean water.<br />
  8. 8. The Pacific Islands<br />The thousands of islands in the Pacific Ocean are divided into three groups.<br />Melanesia “Black Islands”<br />Micronesia “Small Islands”<br />Polynesia “Many Islands”<br />
  9. 9. The Pacific Islands<br />
  10. 10. High Islands<br />High islands are mountainous and have been formed by volcanoes.<br />The soil is very fertile and they can support more people than low islands.<br />
  11. 11. Low Islands<br />Low Islands are made up of coral reefs or atolls.<br />Atolls are are small coral islands in the shape of a ring.<br />The ring of an atoll encloses a shallow pool of ocean water called a lagoon. <br />
  12. 12. Low Islands<br />Low islands have this shape and low elevation because they are coral reefs.<br />Coral is a rocklike material made up of the skeletons of tiny sea creatures.<br />A reef develops until it nears the surface, then sand and other debris accumulate on the reef’s surface and raises the island above the level of the water.<br />Low islands have poor soil.<br />
  13. 13. Melanesia<br />Melanesia is the island group with the most people.<br />Melanesia is north and east of Australia.<br />Most of Melanesia’s islands are high islands.<br />
  14. 14. Melanesia <br />
  15. 15. Micronesia<br />Micronesia is made up of mostly low islands.<br />Most of Micronesia’s islands are north of the Equator.<br />Micronesia’s islands are divided into several groups:<br />Caroline<br />Gilbert<br />Marshall, and Mariana<br />
  16. 16. Micronesia<br />
  17. 17. Polynesia<br />Polynesia is the largest island group in the Pacific.<br />Polynesia includes Hawaii.<br />Dense rain forests cover the islands’ high volcanic mountains.<br />
  18. 18. Polynesia<br />
  19. 19. Climate<br />The Pacific islands lie in the tropics, so temperatures are hot year-round.<br />The ocean winds keep the temperatures from getting too high.<br />Most islands receive heavy rainfall all year long.<br />
  20. 20. Vegetation<br />Because of the high temperatures, plentiful rainfall, and fertile soil, high islands have rich vegetation.<br />Tropical rain forests cover the hills and savanna grasses grow in the lowlands.<br />Low islands, have little vegetation because of the poor soil. <br />
  21. 21. Vegetation<br />Savanna<br />Tropical Rain Forest<br />
  22. 22. Natural Resources<br />The Pacific island region has few natural resources.<br />The coconut palm is the most important resource. <br />Some Pacific islands grow cash crops such as sugar cane and copra.<br />Taro, yams, and sweet potatoes are grown on subsistence farms.<br />
  23. 23. Natural Resources<br />Sugar Cane<br />Copra<br />
  24. 24. Tourism<br />The Pacific islands’ most valuable resource may be their natural beauty. <br />Tourism provides a key source of income in the region.<br />

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