Science 8                                             Name ______________________________

    Minerals & igneous rocks quiz

For all questions, you may use the pages from your Earth Science Reference Tables.

For questions 1 – 3, use the following key:

            A. Cleavage     B. Hardness    C. Luster       D. Streak  

_____ 1. Mica provides an example of this when it is split into thin sheets.

_____ 2. Galena and pyrite share this property, and are different from garnet and calcite.

_____ 3. In pyroxene and amphibole, this is black to dark green.

_____ 4. Which of the following minerals could scratch the other three?

            A. Feldspar      B. Gypsum    C. Magnetite    D. Quartz

5. ______________________  Name the mineral made of O, Si, Al, and K.

6 & 7.  Name two minerals that can be used to obtain iron: ____________________     and _____________________________.

8 & 9.  Name two minerals that provides materials used in constructing this classroom:

 ______________________________ and _____________________________

10. Name the four elements most abundant by mass in Earth’s crust:            _________________________________________________________________

11. What element combines with silicon in all silicate minerals? ____________________

12. Which mineral will give off CO₂ bubbles when acid is dropped on it?           ___________________________

13. By what processes do igneous rocks form?

            A. Deposition and cementation            B. Heat and pressure

            C. Melting and solidification                  D. Weathering and erosion

14. Which rock probably cooled and crystallized fastest?

            A. andesite      B. granite       C. obsidian      D. pegmatite