Get Volcano Quiz Pdf

There are about 1,350 potentially active volcanoes worldwide, aside from the continuous belts of volcanoes on the ocean floor at spreading centers like the Mid-Atlantic Ridge. About 500 of those 1,350 volcanoes have erupted in historical time.

The first known eruption of Ilopango in 450 AD is the second-largest volcanic eruption in the last 200,000 years. This eruption was so large that it is thought to have destroyed several Mayan cities. The skies were filled with ash and dust for more than a year.

The United States is home to three active supervolcanoes, the USGS has determined: The famous Yellowstone, Long Valley and the Valles Caldera in New Mexico.

Which volcanic eruptions were the deadliest? EruptionYearMajor CauseKrakatau, Indonesia1883Tsunami2Tambora, Indonesia1815Starvation2Unzendake, Japan1792Volcano collapse, Tsunami2Lakagigar (Laki), Iceland1783Starvation23 more rows

Rising gradually to more than 4 km (2.5 mi) above sea level, Hawaii's Mauna Loa is the largest active volcano on our planet. Its submarine flanks descend to the sea floor an additional 5 km (3 mi), and the sea floor in turn is depressed by Mauna Loa's great mass another 8 km (5 mi).

Mt. Etna in Italy is sometimes called the oldest active volcano because it has the longest historic record of eruptions.

Height of select volcanoes worldwide (in meters) Volcano, locationHeight in metersMauna Loa (Hawaii, United States)9,170Mount Kilimanjaro (Tanzania)*5,895Popocatépetl Volcano (Mexico)5,426Mount Fuji (Tokyo, Japan)3,7767 more rows • Feb 16, 2023

Volcanoes: Top 10 Questions 1: Why do volcanoes erupt? ... 2: How many active volcanoes are there in the world? ... 3: What makes lava rise? ... 4: What are the signs of a volcano when it's about to erupt? ... 5: How far do volcanoes shoot lava? ... 6: How hot is liquid magma? ... 7: How many times can a volcano erupt?