< Rocks
Maw sit sit is a very rare, complex, polymineralic metamorphic rock. Credit: James St. John.

Rocks is a lecture from the school of geology. It is the keynote lecture for the rocks project.

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Quiz

  

1 Rocks are a bound aggregate of minerals with usually a large

extent.

2 Yes or No, A solid, homogeneous, crystalline chemical element or compound that results from natural inorganic processes is called a mineral.

Yes
No

3 A substance that resembles a mineral but does not exhibit crystallinity?

4 Any natural material with a distinctive composition of minerals?

5 Complete the text:

Match up the form or type of quartz with the effect:
alpha quartz - A
coesite - B
cristobalite - C
stishovite - D
seifertite - E
tridymite - F
10 GPa and above 1200°C

.
2-3 gigapascals and 700°C

.
22-460°C tabular crystals

.
trigonal tectosilicate

.
35 GPa to 40 GPa orthorhombic

1470°C cubic or tetragonal form

.

6 A natural rocky source of chemicals from the sky to the ground may originate from what astronomical source?

Jupiter
the solar wind
the diffuse X-ray background
Mount Redoubt in Alaska
the asteroid belt
the International Space Station

7 True or False, A naturally occurring black glass is called an obsidian.

TRUE
FALSE

8 Various sciences that study rocks are which of the following?

petrology
lithology
petrography
mineralogy
geochemistry
geophysics

9 True or False, A naturally occurring, silvery-colored, metallic liquid, composed primarily of the chemical element mercury, is called mercury, or native mercury.

TRUE
FALSE

10 Complete the text:

Match up the type of silicate with the name:
cyclosilicate - A
inosilicate - B
orthosilicate - C
sorosilicate - D
phyllosilicate - E
tectosilicate - F
structurally isolated double tetrahedra

.
single chain of tetrahedra

.
a continuous framework of tetrahedra

.
a ring of linked tetrahedra

.
a two-dimensional sheet of tetrahedra

isolated tetrahedra

.

11 Mineraloids found on Earth may be which of the following?

tektites
amber
meteorites
petroleum
obsidian
opal

12 Rocks containing large amounts of feldspar?

amphibolites
andesites
aeolianites
anorthosites
anthracites
aphanites

13 Rocks containing mostly quartz?

aplites
argillites
carbonatites
granites
quartzites
troctolites

14 Which of the following is a phenomenon associated with rocks?

one or more crystals
a large geographic extent
occurs as outcrops
often exposed by road cuts
dune sands
may be fine-grained

15 A terrestrial planet is composed primarily of?

16 Which of the following is not a radiation phenomenon associated with a crater?

rock strata
elongated dust particles
high albedo
olivine
Rayleighs
volcanoes

17 Phenomena that may be associated with coals?

predicting the end of the Earth
carbonized ancient plants
a hard mafic rock
having a relatively high volatile content
peridotites
shales

18 True or False, A fine-grained homogeneous rock composed of clay or ash which cleaves easily into thin layers is called a slate.

TRUE
FALSE

19 Rocks that contain magnesium and iron and only a very small amount of silica are called?

20 Which geological phenomena are associated with rocks?

igneous processes
metamorphic processes
lithologic processes
water oceans
liquid lava
silicate minerals

21 Mugearite is a kind of orthoclase-bearing basalt that is made up of olivine, apatite, and?

Hypotheses

  1. There are rocks that contain no minerals.

See also

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