_____Answer Key ___


1. What is the name of the most common rock on the surface of the Earth?




2. In your own words give a definition of the term, ROCK.

Rocks are made of two or more different minerals that have been 1) cemented together, or 2) squeezed and heated together, or 3) melted and cooled together. Rocks make up the majority of the Earth's crust. One of the most common rock is granite. 

3. What are the four minerals that are found in most granite 


Feldspar, mica, quartz, and hornblende


4. What is weathering?

The break down of rock by wind, water, or ice into smaller pieces.


5. What are the three types of rocks?

Sedimentary, Igneous, and Metamorphic.


6. Draw a diagram and explain what happens in the rock 



Chapter 4 - Test Key



7. In your own words describe what a mineral is.

A mineral is a solid material, made of one substance, that occurs naturally on Earth.

Most of the common minerals are made of crystals. A Crystal is a solid formed by a repeating, three-dimensional pattern of atoms, ions, or molecules and having fixed distances between the different parts.


8. What is the name of the mineral that is magnetic?



9. What does the term property of a mineral mean?

A property is a characteristic of a mineral. Properties help scientists to better understand how the mineral was formed and also to help identify a mineral.


10-22 Match the following terms with the corresponding letter.


10.__ F__ Luster a. A large intrusive igneous body 

larger than 100 square km

11. _A__Batholith b. An intrusive igneous body that 

runs parallel to layers of rock. 


12. _D__Non-metallic c. A property of minerals that is 

measured with the Mohs Scale


13. _E__Dike d. A mineral that will not 

conduct electricity.


14. _G__cleavage e. An intrusive igneous body 

that runs through layers of rock.


15. _B__Sill f. A property of minerals that 

indicates the "shininess" of a mineral

16. _C__Hardness g. A property of a mineral that 

describes how a minerals into flat planes.

17. _A__Intrusive a. An igneous rock that is formed under the surface of the Earth.


18. _F__Metallic b. An igneous rock that is formed on the surface of the Earth.


19. _E__Streak c. Molten rock that has not reached the surface of the Earth.


20. _D__Lava d. Molten rock that has reached 

the surface of the Earth. 


21. _B__Extrusive e. A test to determine the true 

color of a mineral.


22. _C__Magma f. a mineral that conducts electricity


23-30 Write the correct term rock or mineral after each word below.