Classifying rocks
Igneous rocks
Sedimentary rocks
Rocks from reefs
Metamorphic rocks
100
The look and feel of rock's surface
What is texture?
100
Igneous rocks are made of...
What are mineral crystals?
100
Is small solid pieces of material that come from rocks or living things.
What is Sediment?
100
They are tiny relatives of jellyfish that live together in vast numbers.
What are Coral animals?
100
Heat and pressure deep beneath Earth's surface can change any rock into this
How do Metamorphic rocks form?
200
Forms from the cooling of molten rock
What is Igneous rock?
200
It is an Igneous rock formed from lava that erupted onto Earth's surface
What is Extrusive rock?
200
Occurs when running water or wind loosen and carry away the fragments of rocks.
What is Erosion?
200
Form only in the warm, shallow water of tropical oceans
Where does Coral reefs form?
200
Forms when limestone is subjected to heat and pressure deep beneath the surface
How does Marble form?
300
Is formed when an existing rock is changed by heat, pressure or chemical reactions
What is Metamorphic rock?
300
Igneous rock that formed when magma hardened beneath Earth's surface
What is Intrusive rock?
300
After sediment has been deposited ,the sediment into sedimentary rock
What is Deposition?
300
When coral animals die, their skeletons remain and they form this...
How do Coral reefs form?
300
Metamorphic rocks that have their grains arranged in parallel layers or bands
What is foliated?
400
Forms when particles of other rocks or the remains of plants and animals are pressed and cemented together
What is Sedimentary rock?
400
A rock with large crystals scattered on a background of much smaller crystals is
What is Porphyritic texture?
400
Is the process that presses sediments together
What is Compaction?
400
Is a ring-shaped coral island found far from land
What is an atoll?
400
Rocks that are arranged randomly
What is nonfoliated?
500
When studying a rock sample, geologists observe the rock's sample, geologists observe the rock's color and texture
What is Mineral composition?
500
Igneous rocks are arranged according to their origin, texture, and mineral composition
How do geologists classify Igneous rocks?
500
Forms where the remains of plants and animals are deposited in thick layers
What is Organic rock?
500
Something that began as coral can be found on continents in places where uplift has raised ancient sea floors above sea level
Where is Limestone found?
500
Metamorphic rocks are arranged by the grains that make up the rocks
How do geologists classify Metamorphic rocks?
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