sedimentary rocks
igneous rocks
metamorphic rocks
coral reefs
classifying rocks
100
coal, limestone
What is organic sedimentary rock
100
lava that erupts on to earths surface
what is extrusive igneous rock
100
a type of rock that forms from an existing rock that is changed by heat,pressure,or chemical reactions
What is metamorphic rock
100
a small sack with tenticles sorrounding its mouth
What are coral animals
100
grains in a rock that are large and easy to see
What is coarse grains
200
sandstone,shale,conglomerate,breccia
What is clastic sedimentary rock
200
lava that hardens under the ground
What is intrusive igneous rock
200
gneiss,quartzite,slate
What are types of metamorphic rock
200
a type of rock that is made up of ancient coral
What is limestone
200
grains that are so small they can only be seen by a microscope
What is fine grained
300
erosion,deposition,compaction,cementation
What is the rock cycle
300
granite
What is the most abundant intrusive rock in the continental crust
300
rocks that have a flaky texture
What are foliated rocks
300
coral reefs form only in this type of water
What is warm water
300
about 20 different minerals make up earths crust
What are rock forming minerals
400
small solid pieces of material that comes from rocks or organisms
What is sediment
400
has larger crystals then extrusive rocks
What are intrusive rocks
400
the grains in theese are arranged randomly
What are non foliated rocks
400
when coral animals die there skeletons remain and form together
What is a coral reef
400
igneous rock,sedimentary rock, and metamorphic rock
What are the three main types of rocks
500
as rock that forms from the remais of swamp plants burried in water.
What is coal
500
has a fine grained or glassy texture
What are extrusive rocks
500
marble slate
What are two of the most useful metamorphic rocks
500
algae needs this to grow
What is sunlight
500
igneous rock,sedimentary rock, and metamorphic rock
what are the three main types of rocks
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