Front

What is a volcanic hazard?

Back

A volcanic hazard refers to any dangerous event associated with volcanic activity, such as pyroclastic flows, lava flows, ash fall, and volcanic gases.

Front

Which of the following is NOT a volcanic hazard?

Back

Subduction of tectonic plates at a boundary.

Front

Where do volcanoes most likely occur?

Back

Along divergent plate boundaries, where tectonic plates move apart.

Front

What is the primary ocean where most tsunamis occur?

Back

Pacific Ocean.

Front

What causes the waves of tides?

Back

The gravitational pull of the sun and the moon.

Front

Define pyroclastic flow.

Back

A fast-moving current of hot gas and volcanic matter that flows down the sides of a volcano during an eruption.

Front

What is the difference between lava flows and pyroclastic flows?

Back

Lava flows are molten rock that moves slowly down the volcano, while pyroclastic flows are fast-moving and consist of hot gas and volcanic debris.

Front

What are divergent plate boundaries?

Back

Regions where tectonic plates move apart, often leading to volcanic activity.

Front

What is the role of tectonic plates in volcanic activity?

Back

Tectonic plates interact at boundaries, leading to volcanic eruptions when one plate subducts beneath another or when they diverge.

Front

What is a tsunami?

Back

A series of ocean waves caused by large disturbances, such as underwater earthquakes or volcanic eruptions.