Hawaii Volcanoes

Written by Gayle Olson

The Island of Hawaii is made up of five volcanoes. Each began to grow beneathrepparttar sea and eventually joined to form a single island. The volcanoes grew from a hotspot beneathrepparttar 127715 sea. The chain of volcanoes were created asrepparttar 127716 Pacific Plate moved northwestward overrepparttar 127717 hotspot. Kohala wasrepparttar 127718 first to emerge fromrepparttar 127719 sea followed by Mauna Kea, Mauna Loa, Kilauea, and Loihi. Activity has ceased at Kohala and nowrepparttar 127720 most activity has been occurring at Kilauea and Loihi.

Loihi is still beneath sea level about 20 miles offrepparttar 127721 southeast flank ofrepparttar 127722 island. A scientific team has installed underwater cable to Loihi. On October 12, 1997,repparttar 127723 cable was laid and scientists discovered that Loihi was in full eruption. The communication cable provides a direct connection to Loihi. Inrepparttar 127724 past, instrument experiments had to be dropped off atrepparttar 127725 seamount and later physically picked up by a submersible research vessel to recoverrepparttar 127726 data.

Fall Bird Migration

Written by Gayle Olson

Fall isrepparttar time ofrepparttar 127714 year when many birds are busy preparing forrepparttar 127715 long journey to their winter homes. Migration isrepparttar 127716 movement of birds and other animals from one home to another. Some birds will fly thousands of miles to reach their winter homes!

Birds beginrepparttar 127717 journey to their winter homes beforerepparttar 127718 food supply inrepparttar 127719 north runs out. Day length and temperature plays a part in triggeringrepparttar 127720 birds' internal seasonal clocks. Shorter and cooler days means thatrepparttar 127721 food supply is running out. Whenrepparttar 127722 water in ponds and lakes begin to freeze over, waterfowl cannot get at food easily and it is time to fly south where it is warmer and open water and food can be found.

Inrepparttar 127723 fall birds begin to flock together getting ready forrepparttar 127724 big trip south. This isrepparttar 127725 time ofrepparttar 127726 year when you will see flocks of blackbirds feeding on berries orrepparttar 127727 V-formation of flocks of geese in flight. It is an important time to build up strength and fuel up forrepparttar 127728 dangerous voyage.

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