EXTRA GEO EXAM 1

Question 1

1 most abundant mineral on earth:

Answer 1

Orthoclase, KAISi3O8, 6 hardness, 2 cleavages, glassy pink

Question 2

2 most abundant mineral on earth:

Answer 2

Quartz, glassy, no cleavage, 6 sided crystals

Question 3

3 most abundant mineral on earth:

Answer 3

Muscovite, hardness 2, 1 perfect cleavage, 6 sided crystals

Question 4

4 most abundant mineral on earth:

Answer 4

Olivine, most abundant inside earth, green glassy, 7 hardness, diamonds associated

Question 5

5 most abundant mineral on earth:

Answer 5

Calcite, CaCo3, 3 hardness, 3 cleavages, fizzes in weak acid

Question 6

6 most abundant mineral on earth:

Answer 6

Halite, NaCl, 3 cleavages at right angles

Question 7

Igneous rocks are classified by:

Answer 7

Composition and texture

Question 8

Shield volcano description

Answer 8

Broad, gently sloping, huge and basaltic

Question 9

Cinder cone volcano description

Answer 9

Steep sides, small, viscous magma

Question 10

Composite

Answer 10

Most common, layers of lava, pumice, ash and tephra

Question 11

Mount Vesuvius

Answer 11

79 AD, 20ft for Pompeii and 75ft for Herculaneum, last eruption in 1944

Question 12

Sedimentary rocks are classified by:

Answer 12

Grain size, mineralogy

Question 13

Metamorphic rocks are classified by:

Answer 13

Foliation and non-foliation