Rocks and Minerals Vocabulary HMS

A gap in the geological record that shows where rock layer have been lost due to erosion.

• Unconformity

• Not like the others

• Mohs Scale

• Undone

The look and feel of a rock’s surface, determined by the size, shape, and pattern of a rock’s grains.

• geode

• organic

• texture

• hardness

A series of processes on the surface and inside the Earth that slowly changes rock from one kind to another.

• Rock star

• Rock cycle

• Rock Band

• Hard Rock

Sedimentary rock that forms from remains of organisms deposited in thick layers

• Organic Rock

• Foliated

• Streak

• Mohs Scale

A scale ranking ten minerals from softest to hardest; used in testing the hardness of minerals.

• Mohs Hardness Scale

• Streak

• Cleavage

• Organic Rock

A naturally occurring solid that can form by inorganic processes and that has a crystal structure and a definite chemical composition.

• Fracture

• Rock Cycle

• cleavage

• Mineral

Igneous rock that forms when magma hardens beneath Earth’s surface. INSIDE

• Intrusive Igneous Rock

• Geode Rock

• Clastic Rock

• Mineral

a usually light-colored igneous rock that is found in continental crust.

• Fracture

• mineral

• Intrusive Igneous Rock

• Granite

A hollow rock inside which mineral crystals have grown.

• Geode

• Metamorphic compound

• Cementation

• Foliated

Term used to describe metamorphic rock that has grains arranged in parallel layer or bands.

• Hardness

• Metamorphic Rock

• Rock Cycle

• Foliated