HMH-Module 3, Natural Disasters- Week One- ERUPTION!

Front

What is a volcano?

Back

A volcano is an opening in the Earth's surface where molten rock, ash, and gases can escape from below the surface.

Front

What is an eruption?

Back

An eruption is the process by which a volcano releases lava, ash, and gases into the atmosphere.

Front

What is the largest eruption in the twentieth century?

Back

The eruption of Mount St. Helens in 1980 is considered the largest eruption in the twentieth century.

Front

What is a seismograph?

Back

A seismograph is an instrument that measures and records the motion of the ground during an earthquake or volcanic activity.

Front

How can scientists predict volcanic eruptions?

Back

Scientists can predict volcanic eruptions by studying seismographs, gas emissions, and changes in the volcano's shape.

Front

What happened on June 14th, 1991, at Mount Pinatubo?

Back

On June 14th, 1991, Mount Pinatubo began a series of eruptions that would become one of the largest volcanic eruptions in history.

Front

Why are volcanoes difficult to predict?

Back

Volcanoes are difficult to predict because they do not erupt in a straight, orderly progression and can show unpredictable signs.

Front

What role does technology play in natural disaster prediction?

Back

Technology helps in predicting natural disasters by providing data through instruments like seismographs and satellite imagery.

Front

What is the difference between magma and lava?

Back

Magma is molten rock beneath the Earth's surface, while lava is magma that has reached the surface.

Front

What are the main hazards associated with volcanic eruptions?

Back

The main hazards include lava flows, ash fall, pyroclastic flows, and volcanic gases.