The newest event of a volcano ERUPTION!!!
The plates that make Mauna Loa to erupt is the Pacific Plate and the North American Plate. The effects that happens after the volcano erupts is it keeps adding on land to Hawaii so that it can keep growing. The city Hilo is made off of the 20th centuries Mauna Loa lava flows. 500,000 people were hit by something from the volcano and either died or lived. Mauna Loa isn't on any type of boundary...it is a hot spot with nothing by it.
Some Extra History
Mauna Loa has grown rapidly during its relatively short (600,000 to 1,000,000 years) history to become the largest volcano on Earth. Although its rate of growth appears to have slowed in the past 100,000 years, our detailed geologic research on the volcano has nevertheless shown that about 98 percent of the volcano's surface is covered with lava flows less than 10,000 years old! Based on reliable ages of nearly 200 of these flows, we've found that Mauna Loa has erupted in time and place in fundamentally different ways -- as eruptions from the summit of Mauna Loa become larger and more frequent, eruptions from the rift zones decline.
Citings: 1.) http://www.volcanodiscovery.com/faq/largest_volcano.html 2.) http://hvo.wr.usgs.gov/maunaloa/history/main.html
This is it when it is about to explode.
This is Mauna Loa when it exploded.
Just a heat sensor of how much heat is in it