Types of Rocks
What type of rock is formed from melted magma or lava?
Igneous Rock
What is magma called when it is above ground?
Lava
What are metamorphic rocks?
Igneous or sedimentary rocks under heat and pressure turn into a metamorphic rock.
What is a Sedimentary Rock?
A rock made from layers of layers of sediments that turn into rock because of pressure
Weathering and erosion causes all kind of rocks to turn into what?
Sediments
Sedimentary Rocks
Pumice is a rock that cooled above ground. Did it cool slowly or quickly?
Slowly
What are some characteristics of metamorphic rocks?
Flattened grains, swirls, not as crystal like, layers are mixed together
What is erosion of rocks?
When little bits and pieces of rock are broken off and carried away and deposited into lakes, rivers or on top of other layers of soil
Igneous Rocks and Sedimentary rocks turn into what rock under heat and pressure?
Metamorphic Rock
What type of rock is formed when the rock changes into another kind of rock?
Metamorphic
This type of rock is formed by slowly cooling pockets of lava underneath the earth's surface.
Granite
Gneiss is what type of igneous rock that was changed from heat and pressure?
Granite
Why are fossils commonly found in sedimentary rock?
Animals need to be buried quickly by sediments in order to become fossils. They need pressure but not heat to become fossils.
When Igneous and Metamorphic Rocks melt, it turns into what?
Magma