Volcanoes

What is a volcano?

• A large storm with very high winds

• A violent shaking of the Earth that occurs when two tectonic plates bump into each other

• An opening in the Earth's crust where magma erupts to the surface

• A large cloud that generates rain, hail, & lightening

• none of the above

What do we call molten hot liquid rock once it erupts to the Earth's surface?

• magma

• igneous

• cinder

• mauna

• lava

What do we call molten hot liquid rock BELOW Earth's surface?

• magma

• igneous

• cinder

• mauna

• lava

What type of volcanoes are formed over many years and can grow to mountains of over 8,000 feet tall, also know as Strato-Volcanoes like Mt. Saint Helens?

• cinder cones

• composite

• shield

• lava domes

What type of volcanoes are formed from lava ejected from a single vent at the top, but they don't get taller than around 1,000 feet?

• cinder cones

• composite

• shield

• lava dome

What type of volcanoes form from wide thin layers of lava, like the ones in Hawaii?

• cinder cones

• composite volcanoes

• shield volcanoes

• lava domes

Which of the following descriptions describes a dormant volcano?

• volcano that is erupting

• volcano that has erupted in recent history

• volcano that scientists believe will never erupt again

• volcano that has not erupted in a long time, but may erupt again

What is the force inside the mantle that causes the Earth's Plates to move ?

• subduction

• radiation

• conduction

• convection

A hot spot is located at the boundary of a plate

• true

• false

What geologic feature will occur at a hot spot ?

• volcano

• folded mountain

• deep sea trench

• crevasse