Types of Volcanic Eruptions and Gases Quiz

Play an AI-generated podcast conversation about this lesson

Effusive Eruptions are formed with small amounts of gas and/or low viscosity magma and are characterized by outpourings of ______ onto the ground.

lava

Gases released by active and inactive volcanoes include water vapor, carbon dioxide, hydrogen gas, hydrogen chloride, hydrogen fluoride, hydrogen sulfide, and sulfur ______.

dioxide

Lava Flow refers to the molten rocks that move down the slope of volcanic vents, and the rate of lava flow can be influenced by the viscosity of magma and the steepness of the ______.

volcano

Pyroclastic Flow refers to the glowing hot material that moves down the slope of an erupting volcano and comes in contact with the ______.

surface Signup and view all the answers

Pyroclastic Surge consists of volcanic materials such as gases, ash, rock fragments, and water extruded above the ground, posing more damage and risks than pyroclastic ______.

flow Signup and view all the answers

Lahar, also known as mudflow or the flow of volcanic debris, can be categorized into Primary Lahar (hot) caused by eruption and Secondary Lahar (cold) caused by ______.

rainfall Signup and view all the answers

_________ are fragments of rock that are produced when magma or rock is explosively ejected.

Tephra Signup and view all the answers

_________ is the largest fragment which is greater than 64mm or 2.55 inches in diameter.

Volcanic Bomb Signup and view all the answers

_________ has a diameter of 0.24 to 2.55 inches.

Lapilli Signup and view all the answers

_________ are the smallest materials and usually less than 2mm in diameter.

Volcanic Ash Signup and view all the answers

Hawaiian Eruption creates _________ volcanoes.

shield Signup and view all the answers

Plinian Eruption is the most _________ and explosive type of eruption.

violent Signup and view all the answers

Alert Level 4 indicates that a hazardous eruption is ______

imminent Signup and view all the answers

Alert Level 2 suggests increasing unrest and the possibility of ______ eruption

volcanic Signup and view all the answers

Lava fountaining is often seen during a hazardous eruption at Alert Level ______

5 Signup and view all the answers

Magma rising from the Earth's crust may lead to a ______ eruption

possible Signup and view all the answers

Volcanic eruptions can result in the release of various ______ and widespread damage

chemicals Signup and view all the answers

The fertility of volcanic soil can be greatly enhanced due to the minerals brought out during eruptions, but it can also lead to widespread ______

destruction Signup and view all the answers