Geologists have classified rocks into three major groups of rocks which are:

• inorganic, organic and chemical rocks

• igneous, sedimentary and metamorphic rocks

• metamorphic, chemical and non chemical rocks

• sedimentary, inorganic and igneous rocks

A rock that forms from many small fragments of other rocks is a(n)

• igneous rock

• metamorphic rock

• sedimentary rock

• extrusive rock

What kind of igneous rock usually contains large crystals?

• inorganic

• extrusive

• organic

• intrusive

Which rock cycle process causes many sedimentary rocks to have visible layers?

• eruption

• intrusion

• crystallization

• deposition

If heat and pressure inside Earth cause the texture and crystal structure of a rock to change, what new material is formed?

• sedimentary rock

• metamorphic rock

• igneous rock

• chemical rock

This rock started as molten magma. What type of rock is this?

• Sedimentary
• Igneous
• Metamorphic

True or False: Once a rock is sedimentary, it cannot become an igneous rock.

• True
• False

Which rock is formed form the cooling of volcanic ash on Earth's surface?

• intrusive igneous

• foliated metamorphic

• extrusive igneous

• organic sedimentary

True/False: Igneous rocks can only turn into metamorphic rocks.

• True
• False

The process in which dissolved minerals crystallize and glue sediment together.

• compaction
• deposition
• organic rock
• cementation