This video displays volcanic eruptions. Volcanic eruptions can be explosive or gentle depending on the composition of the lava. Composite volcanoes have hardened lava flows and pyroclastic materials come out when they explode. Shield volcanoes have more liquid lava which flows over larger areas. Cinder cones explode once, and the lava hardens in the air to then land on the ground in a cone shape. The video explains how the Hawaii Volcanoes National Park offers people to watch these eruptions.
This is a mapped location of the Hawaii Volcanoes National Park. It is on the island Hawaii which was formed over a hot spot. A hot spot is an area where hot material rose, and created volcanic activity. Kilauea and Mauna Loa are examples of this volcanic activity. All of the Hawaiian islands have formed from this hot spot due to lithospheric plates moving past the hot spot. Hot spots do not move with lithospheric plates as shown here.
This is a picture of pahoehoe lava coming from Kilauea in the Hawaii Volcanoes National Park. Pahoehoe lava is basaltic, and it flows quickly forming smooth surfaces. These surfaces appear very ropelike as well, and they are very different to those of aa lava. Aa lava is rough, and has jagged surface. Pahoehoe lava is formed the way it is because of its high temperatures, and aa lava has cool temperatures. These characteristics are the main factor that changes how pahoehoe and aa lavas are different.
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Artifacts: By Bhavya Jetty
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This artifact is a video of one of the volcanoes in Hawaii Volcano National Park erupting. This artifact relates to earth science because it displays an eruption. We learned that a volcanic eruption is caused by magma—molten rock deep within the earth—rises to the surface. Another aspect of earth science this video portrays is rock formation. Igneous rocks form when magma reaches the surface and cools. The last aspect this artifact displays is the ocean waves. We learned that surface ocean currents are caused by wind.
This artifact is a photograph of a volcano from Hawaii Volcanoes National Park erupting. This pertains to earth science because is shows an eruption. An eruption is magma from within the earth coming up through an opening to the earth’s surface. Another example of this picture’s relation to earth science is the fact that there are igneous rocks. Igneous rocks form when magma cools. Igneous rocks are also part of the rock cycle. Volcanic eruptions also create volcanic ash which is shown in this photograph. This photo also portrays plate tectonics. Hawaii is a volcano arc and that is formed when an oceanic plate subducts under another oceanic plate.
This artifact is a photograph of one of the volcanoes from Hawaii Volcano National Park, erupting. This photo relates to earth science because it shows an example of plate tectonics. When one oceanic plate subducts under another, a volcanic island arc is created which is what this photo displays. Another example of how this artifact relates to is earth science is its display of magma. When magma cools it turns into igneous rocks and rocks were a unit in earth science. Another aspect shown is water vapor. When water reaches it’s boiling point it creates water vapor.
This artifact is a photograph of the volcano Kilauea. This picture relates to earth science because it shows lava. Lava is molten magma that is deep under the ground but becomes lava when it rises to the surface through a crack in the plate boundaries. This picture also shows igneous rock forming. Igneous rock forms when lava cools. An type of igneous rock is basaltic. An example of basaltic rock is Pahoehoe which is lava that has smooth ropelike texture.