Volcanic Eruptions and Their Effects

The video discusses major volcanic eruptions, including Mount Vesuvius, Mount Tambora, and Mount St. Helens, highlighting their impacts and geological significance. It explains the processes behind volcanoes and earthquakes, the role of tectonic plates, and the Ring of Fire. The formation of the Pericutin Volcano in Mexico is detailed, along with the challenges in predicting eruptions.

What was the significant impact of Mount Vesuvius's eruption in 79 AD?

• It created a new island.

• It caused a global temperature rise.

• It led to the extinction of a species.

• It buried the city of Pompeii.

What was the global consequence of Mount Tambora's eruption in 1815?

• It triggered a tsunami.

• It resulted in a new volcanic island.

• It led to a massive earthquake.

• It caused a year without a summer.

What was a key warning sign before the eruption of Mount St. Helens?

• A rise in sea level.

• Frequent rumblings and earthquakes.

• Increased volcanic ash in the air.

• A sudden drop in temperature.

What causes the movement of tectonic plates?

• Solar flares.

• Magma flow beneath the crust.

• Ocean tides.

• Wind currents.

What is the term for molten rock once it reaches the Earth's surface?

• Magma

• Lava

• Basalt

• Granite

Where do most volcanoes occur?

• In the middle of tectonic plates.

• In desert regions.

• In polar regions.

• Along the edges of tectonic plates.

What is the 'Ring of Fire' known for?

• Being a region of frequent hurricanes.

• Having a high number of active volcanoes.

• Being the coldest place on Earth.

• Having the largest desert.

How did the Paricutin volcano in Mexico begin?

• A volcanic eruption under the sea.

• A large earthquake.

• A field cracking open and releasing steam and molten rock.

• A meteor impact.

What is a common sign that a new volcano might form?

• A sudden increase in rainfall.

• A rise in sea level.

• The ground getting warmer and small earthquakes.

• A decrease in animal activity.

What do geologists rely on to predict volcanic eruptions?

• Ocean currents.

• Seismic activity and rumblings.

• Animal behavior.

• Weather patterns.