Volcanoes
How did the Ring of Fire get its name?
The ring of volcanoes lining the shores of the Pacific Ocean.
What can an earthquake at sea cause?
A tsunami
How is igneous rock formed?
When magma forms and solidifies.
What are sedimentary rocks made from?
Tiny bits of rock, sand, and fossils.
How is metamorphic rock formed?
When igneous or sedimentary rock are exposed to extreme heat or pressure.
What happened when Pele got angry?
She caused things to burn and lava to erupt from the ground.
Where do earthquakes usually occur?
At tectonic plates
What rock is formed when lava cools quickly?
Obsidian
Most sedimentary rocks are easily or not easily broken?
Easily
What rock does granite become when exposed to heat and pressure?
Gneiss
Where you find volcanoes, you might also find....
Earthquakes
Name three ways an earthquake can occur at the plates?
Colliding, one going under the other (subduction), and spreading apart.
Igneous is a part of what cycle?
Rock cycle
What rock is often packed with fossilized skeletons?
Limestone
Where can metamorphic rock be found?
Deep within the Earth's crust
Explain how a volcano is formed
Tectonic plates spread apart allowing pressurized water and magma to erupt.
What is a fault?
A fracture or crack in the Earth's crust
This rock formed from magma that cooled within the Earth's crust.
Granite
What rock started as grains of sand?
Sandstone
Where do metamorphic rocks often form?
Where tectonic plates are slowly colliding
What is a volcano called that has not erupted for at least 10,000 years?
Extinct
How are ocean trenches formed?
When one plate is sliding or subducting with another plate.
Sharp and fragile
When sedimentary rock is exposed to extreme heat and pressure, what type of rock is formed?
Metamorphic
What does metamorphic rock become if it completely melts again?
Igneous