Volcanic Eruptions Terminology

Lahar is an Indonesian term that describes a hot or cold mixture of water and rock fragments flowing down the slopes of a ______ and river valleys.

Ash fall can have serious detrimental effects on agricultural crops and livestock depending mainly on ash thickness, the type and growing condition of a crop, the presence of soluble flouride on the ash, and timing and intensity of subsequent ______.

Ash fall is a rain of airborne ash resulting from a volcanic ______.

Pyroclastic flow are heavier-than-air gas-particle emulsions that ______ the ground at velocities ranging from 10 m/sec to 300 m/sec.

Pyroclastic flow can attain temperatures of over ______ C.