Earth and volcanoes

Which layer of earth is about 4000C" hot and consists mostly of liquid metals with a little bit of rocks?

• crust

• inner core

• outer core

• mantle

Which layer of Earth is extremly hot (5000-6000 Co) and consists of solid iron and nickel?

• crust

• inner core

• outer core

• mantle

Which layer of Earth consists of melted rocks?

• crust

• inner core

• outer core

• mantle

What do we call the rock liqud that makes up mantle?

• lava

• magma

• water

• juice

When magma becomes lava?

• when its heated

• when it mixes with water

• when it comes out to the surface of the Earth

• when it cools

Which layer of Earth is the outer shell and consists of hard rocks?

• crust

• inner core

• outer core

• mantle

Where the crust is thinner and about 5km thick?

• where mountains are

• under the Ocean

• where deserts are

• under Antarctica

What natural event happens when

pressure builds up under Earth crust and causes magma to erupt through?

• earthquake

• volcano eruption

• tsunami

• huricane

A volcano that is not erupting for a long time is called....

• active volcano

• composite volcano

• secondary cone

• sleeping/dormant volcano

A cone shaped volcano that has layers of ash and lava is called...

• cinder volcano

• composite volcano

• shield volcano