Week Two Part 2 Earthquake

Question 1

Dip slip faults-
Normal faults: ______________
(younger rocks on top of older rocks)

Reverse(Thrust) faults: Compression

Answer 1

Extensions

Question 2

Seismometer- device that measures earthquakes

seismograph- device that record earthquakes

seismogram- actual recording of an earthquake, either on paper or digitally

seismologist- a person who studies earthquakes

Question 3

Earthquake scales- Modified Mercalli, Richter, Moment Magnitude

Question 4

8 silicate minerals:

Olivier
Proxene
Amphibians
Micas-Biotite
Micas-Muscovite
Feldspars-Potassium
Feldspar-Plagioclase
Quartz

(Over Pluto a marvelous butterfly moved millions feet plus flew peacefully & quitely

Question 5

Plagioclase feldspars make up 39%of crust

Potassium feldspars make up 12% of crust

Question 6

Igneous rocks- formed from molten materials (magma when it’s inside the Earth & Lava when it’s at Earth surface

Question 7

2 main factors determine the type of igneous rock produced by molten material-

-Cooling rate- fast, slow or a combination of both. This controls texture

-Composition- what chemics are in the magma determines what minerals are the building blocks of rocks.

Question 8

Obsidian- rocks with a glassy texture

Answer 8

Ground mass- refers to part of rocks where crystals are not visible

Question 10

Pegmatitic texture- all large crystals

Question 11

Volcanic Breccia- made of pieces of volcanic rock larger than 2 millimeters in size

Tuff- made of volcanic ask less than 2 millimeters in size

Question 12

Compositional terms:

Felicia(Feldspar & silica)
Intermediate
Magic
Ultramafic

Question 13

Dominant mineral/Granitic- Quartz

Dominant/Andesitic- Amphibole

Dominant/Basaltic- Pyroxene

Dominant/Ultramafic- Olivine