C. oxygen
1. Which of the following refers to an aggregate of one or more minerals?
A. compounds B. elements C. mineraloids D. rock
2. Which of the following leads to formation of an igneous rock?
A. at great depth within Earth C. by changes in mineral composition
B. By crystallization of molten rock D. by the weathering of pre-existing rocks
3. Which of the following is produced when limestone undergoes metamorphism?
A. phyllite B mica schist C. marble D. gneiss
4. Sedimentary rocks account for about how much in the total percentage of rocks found in
all continents?
A. 20 B. 35 C. 50 D. 75
5. Which of the following does NOT refer to sedimentary rocks?
A. may contain fossils
B. may be economically important
C. hold important clues to Earth's history D. formed because of heat and pressure at depths
6. Which of the following elements bonds with silicon and forming silicates?
A. calcium B. hydrogen
D. Sodium
7. Which of the following characteristics refer to the tendency of minerals to break forming
smooth flat surfaces?
A. cleavage B. conchoidal C. streak D. fracture
8. Which of the following is the most common mineral on the Earth's surface?
A. feldspar B. mica C. olivine
D. Quartz
9. Which of the following is NOT a characteristicof minerals?
A. possess a crystalline structure C. definite chemical composition
B. formed by inorganic processes D. either liquid or solid
10. Which of the following is the most abundant mineral group on the Earth's crust?
A. carbonates B. oxides C. silicates D. sulfides
11. Which of the following refers to ability of minerals to reflect light on its surface?
A. Streak B. luster C. fluorescence D. color
12. Which of the following is said to be the most unreliable (variable) diagnostic property of
minerals?
A. luster B. hardness C. crystal form D. color
13. On Mohs hardness scale, which is the softest mineral?
A. apatite
B. calcite
C. quartz
D. talc
14. Which one of the following is NOT one of the eight most common elements in
Earth'scrust?​