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Date: 2015-10-07; view: 563.

TEST 4 (UNIT 4 - Rocks and Minerals)

1. The rock cycle is __________________.

A. reconstructing of Earth's crust

B. renewing of Earth's elements

C. reworking of Earth's materials

2. Sedimentary and metamorphic rocks are derive from_________________.

A. parent rocks

B. igneous parents

C. country rock

3. Rocks are __________________.

A. mixtures of minerals

B. combinations of elements

C. composition of grains

4. There are _________ elements that are the basic ingredients for rocks.

A. 8

B. 6

C. 10

5. The main element in the continental crust is __________________.

A. aluminum

B. silicon

C. oxygen

6. Crystal structure is controlled by ________________..

A. constancy of atoms

B. arrangement of atoms

C. composition

7. There are ________________ crystal systems that include all minerals

A. 5

B. 6

C. 7

8. Hardness determines __________________.

A. how a mineral resists scratching

B. how a mineral scratches

C. how a mineral can be scratched

9. The hardest mineral according to Mohs' scale is _______________.

A. diamond

B. talc

C. gypsum

10. Color is not sufficient enough to identify a mineral because__________.

A. it shows only a mineral impurities

B. one mineral may have several colors

C. limited value in identification

11. What property is more diagnostic in minerals___________

A. streak

B. color

C. impurities

12. Luster can be ______________

A. non-metallic and metallic

B. metallic and submetallic

C. non-metallic, metallic and submetallic

13. Mica has ____________ cleavage.

A. one direction

B. three directions

C. no direction

14. The following minerals have taste________

A. quartz and mica

B. silicate and calcite

C. halite and sylvite

15. Ignis is the Latin word for ______________.

A. lava

B. fire

C. ash

16. The formation of sediment rocks takes place

A. at the Earth's surface

B. in the Earth's crust

C. at the Earth's subsurface

17. Metamorphism means__________________

A. accumulation of pre-existing rocks

B. melting and cooling of magma

C. recrystallization of original minerals

18. The Greek word “meta” is translates as_______________

A. accumulating

B. molten

C. successive

19. Expansion and contraction result in ____________

A. rock transformation

B. rock cracks

C. rock erosion

20. Decomposition of rocks is influenced by_________________

A. heat and cold

B. pressure and heat

C. temperature and heat

21. Minerals are divided into two broad classifications____________

A. minerals and clasts

B. ore minerals and rock-forming minerals

C. minerals and rocks

22. Quartz is ______________

A. pure silicon

B. pure silica

C. pure silicate

23. Graphite is ________________.

A. a pencil lead

B. a mineral

C. an element

24. Diamond and graphite are called__________.

A. polymorphs

B. isomorphs

C. amorphous

25. Isomorphs are two minerals which _______________

A. have the same crystal structure and chemical composition

B. have different crystal structure but same chemical composition

C. have the same crystal structure but different chemical composition