Igneous Rocks
Igneous rocks can be found around or in these.
Volcanos
A key physical characteristic of a sedimentary rock is...
Clear sediment layers, fossils may be present, softer breakable rock.
A physical characteristic of these rocks could be.....
ribbon like layers, shiny small grains or crystals.
Solid, strong rock.
The three categories all rocks can be put into.
igneous, sedimentary and metamorphic
This word means "resulting from or produced from fire."
igneous
Melted liquid rock and minerals when underground is called _______
Magma
When rocks are broken down by weather and erosion this forms ........
Sediment
These two things are required for a metamorphic rock to form.
Pressure and heat
A rock that was sediment, then went under pressure, then was melted down and crystalized or cooled inside a volcano is this type of rock.
igneous rock
The process where a rock is squished into layers.
Compaction
If an igneous rock was found with shiny glass like texture what would you assume about the rate that it cooled?
It cooled quickly.
Fossils can only be found inside sedimentary rocks, true or false? (must be able to explain why)
True, the fossil is trapped in the sediments. Both other types of rocks require heat which would melt the fossils.
Does the process of forming metamorphic rocks melt the rock down into magma first?
No, it just gets hot enough to change and reshape the rock.
These types of rocks can become sediment by weathering and erosion.
All of them
Metamorphic rocks get their name also from the latin word morph, meaning......
to change
If you discovered an igneous rock with large grains and large crystals, what type of igneous rock would this be?
Intrusive igneous rock
What are the two processes that turn sediments into sedimentary rocks?
Cementation and compaction
How can a metamorphic rock change in to an igneous rock?
Melting to magma then cooling again.
Pumice is an example of which type of rock?
Extrusive igneous
What is lava?
Molten rock and minerals that has been forced the the surface
What is the name and cooling speed of an igneous rock that has air holes in it and fine grains?
List 3 possible things can make up the sediments that form into sedimentary rocks?
rock fragments, dead remains of animals or plants, shell fragments.
The ribbon like layers on metamorphic rocks are different to the layers in sedimentary rocks because....
They are usually waves, bendy not straight and can be shiny.
Crystal and grain size in an igneous rock is impacted by.....
The rate at which it cools.
Which type of rock makes up the majority of the Earths crust?
Igneous