Rock Types and Formation Assesstment Sept 15-20

Rocks vary in color, size, texture and shape. They are classified based on how they were formed. Which of the following deals with the study of rocks?

• Biology

• Geology

• Paleontology

• Petrology

Halite is made when a body of seawater becomes closed off and evaporates and salt precipitates out and is deposited as crystallized halite. What type of sedimentary rock is formed?

• Clastic

• Chemical

• Organic

• Pyroclastic

Igneous rock is divided into two groups, extrusive and intrusive Extrusive igneous rocks form when magma makes its way to its surface as lava and the cools forming rocks. Which will be the characteristics of the crystals?

• Crystals are very large.

• Crystals are phaneritic.

• Crystals are fine grained.

• Crystals are coarse grained.

Regional metamorphism occurs due to changes in pressure and temperature over a large region of the crust. It may happen when rock is buried deep below the surface or where pieces of the Earth's crust collide. Which is a metamorphic rock?

• Breccia

• Conglomerate

• Marble

• Sandstone

Igneous and metamorphic rock can be buried and undergo tremendous heating and stress. What is the process of transformation of one rock type into another?

• Compaction

• Lithification

• Metamorphism

• weathering

What type of rocks are formed from sediments over long period of time?

• Igneous Rocks

• Metamorphic Rocks

• Sedimentary Rocks

• Minerals

Which type of rock is formed when heated and compressed over time?

• Igneous

• Metamorphic

• Sedimentary

• All are correct

What is the natural process that causes one kind of rock to change into another kind?

• weathering

• rock cycle

• Sediments

• Metamorphism

Which rock type is formed from hardened magma beneath the Earth's surface?

• Intrusive metamorphic rock

• Extrusive sedimentary rock

• Intrusive igneous rock

• Extrusive igneous rock

Which of the following is an example of an igneous rock?

• Coal

• Granite

• Limestone

• Sandstone