Name:________________________________________

Date:_________________________________________

 

Word Bank:

Mars
crust
crater
miles		 summit
rock
lava
cracks		 Magma
Earth
volcano
erupts

A volcano is a place on the Earth's surface (or any other planet's or moon's surface) where molten _______________________, gases and pyroclastic debris erupt through the earth's _______________________. Volcanoes vary quite a bit in their structure - some are _______________________ in the earth's crust where lava erupts, and some are domes, shields, or mountain-like structures with a _______________________ (a circular depression) at the summit.

_______________________ is molten rock within the Earth's crust. When magma _______________________ through the earth's surface it is called _______________________.

The largest volcano on _______________________ is Hawaii's Mauna Loa. Mauna Loa is about 6 miles (10 km) tall from the sea floor to its _______________________ (it rises about 4 km above sea level). It also has the greatest volume of any volcano on Earth, 10,200 cubic miles (42,500 cubic kilometers).

The largest _______________________ in our Solar System is perhaps Olympus Mons on the planet _____________________. This enormous volcano is 17 _____________________ (27 km) tall and over 320 miles (520 km) across.