Volcanoes

What does VEI stand for?

• Volcanic Explosivity Index

• Very Explosive Intestine

• Very Exciting Incident

• Volcanic Eruptibility Index

What is the scale for the VEI?

• 0-10

• 1-10

• 0-8

• 1-5

Explosive eruptions have more viscous lava. True or false?

• True

• False

Explosive eruptions occur regularly. True or false?

• True

• False

Effusive eruptions are found at divergent plate boundaries. True or false?

• True

• False

Effusive eruptions have lava with a lower gas content. True or false?

• True

• False

What is "a combination of very hot gases, ash and rock travelling at high speed"?

• Lava flow

• Mudslide

• Pyroclastic flow

• Lahar

What is "any material ejected from a volcano into the air"?

• Lahar

• Tephra

• Pyroclastic flow

• Tsunami

What is "a type of mud flow"?

• Lava flow

• Pyroclastic flow

• Tsunami

• Lahar

Volcanic eruptions can cause tsunamis. True or false?

• True

• False