All about Volcanoes

True or False:

Earth is convered with a variety of features.

• True

• False

True or False:

Volcanoes can build and/or destroy.

• True

• False

______________ is called magma.

• mantle

• sloping volcanoes

• Molten rocks

• sedimentary rock

What main ways are volcanoes formed? Select all that apply.

• high speed winds

• Mantle

• rapid erosion of soil on a steep slope

• Tectonic plates

Why do hotspots occur? Select all that apply.

• Mantle is hot

• over exposure to sun rays

• rapid erosion of soil

• Crust is thin

What occurs when mantle gets hot?

• hotspots occur

• ash emerges

• rift valley

• ring of fire

What is pumice?

• large volcanic eruptions that reflect radiation

• common volcanic gases

• volcanic igneous rock that can float in water

• sedimentary rocks that have formed from dormant volcanoes

____________ is full of little air bubbles.

• sedimentary rock

• pumice

• limestone

• metamorphic rock

What is obsidian?

• black sand formed from the erosion of volcanic rock

• volcanic ash

• naturally occuring volcanic glass

what is the texture of obsidian? Select all that apply.

• hard

• shiny

• brittle

• soft