Understanding of Rocks & Minerals - Questions

Competency Goal 2: Students will have an understanding the composition and uses of rocks and minerals.

Questions:

1.  A mineral sample has a white streak and is so soft it can be scratched with your fingernail. What is it?

2.  The ___________ of a mineral describes how its surface looks when light is reflected on it.

3.  _______________rocks form when melted rock hardens.

4.  Why is silver often mixed with other minerals to make instruments or jewelry?

5.  __________________is an important source of the iron used in steel making (making steel beams for tall buildings).

6.  ______________ rocks form from layers of sediment found in river basins, oceans, and streams. They may contain fossils of shells, bones, and once living organisms.

7.  ______________ is a common type of rock found in eastern North Carolina because of all the lakes, rivers, and streams.

8.  ________________ rocks are formed from heat and pressure.

Use the table to answer 9 and 10.

9. Which mineral is the hardest?

10.  Quartz can scratch calcite.