Why the islands form a chain and not some other shape?
In the case of the Hawaiian Islands, the Pacific Plate is continually moving to the northwest over the Hawaiian hot spot. This movement caused the Hawaiian chain of islands to form.
Where do island chains form?
As a crustal tectonic plates move over hot spots mantle material upwells and erupts on the surface of the plate to form a volcano, seamount or volcanic island. The islands and seamounts of the Hawaiian Archipelago were created by a hot spot under the Pacific Plate that has been active for the past 41 million years.
What are island chains?
An archipelago (/ˌɑːrkɪˈpɛləɡoʊ/ ( listen) ARK-ih-PEL-ə-goh), sometimes called an island group or island chain, is a chain, cluster or collection of islands, or sometimes a sea containing a small number of scattered islands.
How does a chain of volcanoes form?
A volcanic arc is a chain of volcanoes formed above a subducting plate, positioned in an arc shape as seen from above. Generally, volcanic arcs result from the subduction of an oceanic tectonic plate under another tectonic plate, and often parallel an oceanic trench.
Where are most volcanoes located?
Pacific Ocean
Would a diamond melt in lava?
To put it simply, a diamond cannot melt in lava, because the melting point of a diamond is around 4500 °C (at a pressure of 100 kilobars) and lava can only be as hot as about 1200 °C.
What color of lava is the hottest?
Scientists usually use the color of the lava as a rough indicator of how hot it is, with red being “cool” (about 1,472 °F), orange being slightly warmer (about 1,472–1,832 °F), and yellow being the hottest (from 1,832–2,192 °F), according to the USGS.
Which is the hottest fire color?
Despite its icy hue, the hottest color of flame is violet. At over 1,650 degrees Celsius, violet flames’ high temperatures can slice through nearly any metal, glass, or rock with ease. For this reason, you can often spot violet and blue flames at the end of welding torches.
Which is hotter blue lava or red lava?
In other words, it is glowing red hot, which occurs at temperatures in the 1150°–600°C range. At much higher temperatures, around 6000°C and up, black-body emission is distinctly blue, but this is much, much hotter than any magma can achieve naturally on Earth.
Is purple lava real?
The volcano contains large amounts of pure sulfur, which emits an icy violet color as it burns, filling the air with toxic fumes. The picture above was taken in a low lying field in Ethiopia. So what we’re seeing here is not actually blue lava, but normal, bright purple lava, surrounded by blue flames.