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Lava is very hot- it is melted rock. Hot rock + water= steam
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How a shield volcano is formed?
shield volcanoes are formed by lava flows or low viscosity lava that flows easily...
What are dark colored areas that look like oceans and were formed by lava flows?
The "Maria" on the Moon.
What evidence indicates that oceans formed early in Earth's geologic history?
Radioactive studies and lava flows offer evidence that there has been abundant water throughout Earth's geologic history.
What flows from rifts in the sea floor and builds up high enough to break the oceans surface?
Lava
What are the dark features of the moon?
They are called "maria". They were the formed by ancient volcanic lava flows.
Does steam gas and dust pile up harden and form a volcano?
Steam and gas cannot pile up. Stratovolcanoes are composed of piles of volcanic ash ("dust") and lava flows. Cinder cones are composed of piles of rock fragments. Shield volcanoes are composed of layers of lava flows.
What types of rocks are formed from lava on the oceans floor?
Igneous Extrusive rocks. It that too general?
Which moon surface features probably formed when lava flows filled large basins?
maria
Very broad volcano with gentle slopes formed from basalt lava flows.?
it is a shield volcano
When lava flows and cools on Earth's surface it forms what kind of rock?
Igneous rock is formed through the cooling and solidificatio of magma or lava.
What are lava flows on a volcano?
A lava flow is where lava flows down the side of a volcano.
Do cinder cones produce lava flows?
Yes. Although its typical eruptions produce simple lava flows, there have been cases where water came in contact with magma, triggering explosive eruptions with pyroclastic flows.
