Show:
Classifying Rocks
Igneous Rocks
Sedimentary Rocks
Rocks from Reefs
Metamorphic Rocks
100
A dark colored rock that is low in silica.
What is basalt?
100
A rock formed by cooled lava or magma.
What is an igneous rock?
100
A rock formed when rocks are pressed and cemented together.
What is a sedimentary rock?
100
An animal as small as your fingernail that looks like a sack surrounded by tentacles.
What is a coral animal?
100
A rock formed by heat and pressure under earth's surface.
What is a metamorphic rock?
200
Rocks made up of particles of minerals or other rocks.
What are grains?
200
An igneous rock formed by lava that erupted on earth's surface.
What is an extrusive rock?
200
A rock formed by the remains of plants or animals that form in layers.
What is an organic rock?
200
A structure formed by skeletons of coral animals.
what is a coral reef?
200
A metamorphic rock that has grains arranged in parallel layers or bands.
What is a foliated rock?
300
Quartz, Feldspar, Hornblende, and Mica compose this high-silica content, igneous rock.
What is granite?
300
An igneous rock formed by magma cooling beneath earth's surface.
What is an intrusive rock?
300
Small pieces of material that come from rocks or living things.
What is sediment?
300
A rock that coral reefs are normally composed of.
What is limestone?
300
Two useful metamorphic rocks used as building material and sculpture.
What are marble and slate?
400
Grain size, grain shape, and grain pattern.
What are terms that geologists use to describe a rock's texture?
400
A fine grained, extrusive igneous rock.
What is ryolite?
400
Sedimentary rocks used as building material.
What are sandstone and limestone?
400
A mineral that coral animals use to form their skeletons.
What is calcite?
400
One meaning change and the other meaning form.
What is the meaning of meta and morphosis?
500
Mineral composition, color, and texture.
What are characteristics that geologists use to identify rocks?
500
The most common intrusive rock.
What is granite?
500
The four processes of making a sedimentary rock.
What are erosion, deposition, compaction,and cementation?
500
The only states in the U.S. that have coral reefs.
What are Hawaii and Florida?
500
The metamorphic form of shale.
What is Slate?