Geology Final

Front 1

Data derived by the rock record shows that our species has been present for less than __% of Earth's history

Back 1

1

Front 2

As consequence of the tectonic system, ocean crust is:

Back 2

Always being recycled, and relatively thick and light

Front 3

The outer portion of the mantle characterized by convection of plastic material is the:

Back 3

Astehnosphere

Front 4

Bedrock exposed locally in the Rockford Area is:

Back 4

Dolostone

Front 5

Compared to the continental crust, ocean crust differs in terms of:

Back 5

Density, Chemistry, thickness, and response to tectonic stresses

Front 6

Continental Drift was originally rejected because:

Back 6

No plausible mechanism was offered

Front 7

Which of the following would have formed last in this area?
A.Glacial Till
B.Glacial outwash
C. Rock River Valley
D. Dolstone Bedrock

Back 7

C. Rock River Valley

Front 8

The term used for all the outer realtively rigid portion of the Earth below us is the the:

Back 8

Lithosphere

Front 9

Which mineral class constitutes both ores and rock formers?

Back 9

Oxides

Front 10

What lies immediately under the Penguin Driving range on Riverside Blvd?

Back 10

Contaminated groundwater, a superfund site, porous river sands, and carcinogenic chemicals

Front 11

Sustainability is a goal many pople hope for in the future. In short, what are we trying to achieve?

Back 11

E. All of the above

Front 12

Magma rises to the surface because it has____ than surrounding rock.

Back 12

Lower Density

Front 13

The landmarks consistantly marking the locations where ocean crust is sinking back into the Earth's interior are____.

Back 13

Trenches

Front 14

What sorts of geologic hazards are concentrated at rifts, trenches, and trasform or strike-slip faults?

Back 14

Earthquakes, volcanism, and floods

Front 15

An example of a continent currently being rifted apart is:

Back 15

Africa

Front 16

Magma:

Back 16

mostly solidifies on rock upon cooling

Front 17

The operation of the Earth's tectonic system is primarily sustained by:

Back 17

Radioactive decay and heat in the mantle

Front 18

In what region of the Erth's interior is the magnetic field generated?

Back 18

Outer Core

Front 19

What erm describes sinking ocean lithosphere trenches?

Back 19

Subduction

Front 20

Reconstruction of the world before dinosaurs shows a supercontinent known as:

Back 20

Pangea

Front 21

The asthenosphere is:

Back 21

E. All of teh above

Front 22

Chunks of rock carries into this area within ice are called:

Back 22

Bed Load

Front 23

The outer core is:

Back 23

Liquid

Front 24

When the material that now makes up local dolostones originall was deposited, this area was:

Back 24

Ashallow sea

Front 25

Continental crust:

Back 25

Drifts through the lithosphere

Front 26

Which of these terms has the strongest scientific support in terms of rigorous testing?
A. Idea
B. Hypothesis
C Guestimate
D.Theory

Back 26

D. Theory

Front 27

What function does a water tower provide?

Back 27

Maintains water pressure

Front 28

The author of the text suggests that the single greatest environmental concern is:

Back 28

Overpopulation

Front 29

Most geological hazards are exaplainable as products of the:

Back 29

Tectonic System

Front 30

The process of new crust emplacement at rifts adds___ to the edges of tectonic plates:

Back 30

Ocean crust, basalt, rocks.minerals, and lithosphere

Front 31

Given the geological records preseved in this area, what can we say happened here during the Mesozoic Era, the time of the dinosaurs?

Back 31

We really can't say

Front 32

What part of the earth has the greatest density?

Back 32

The Core

Front 33

Which type of local sedimnet was deposited as a result of glactiation?

Back 33

Till?

Front 34

Which property listed below is likely least diagnostic of a particular mineral?
A. Color
B.Hardness
C. Crystal Form
D. Cleavage
E. Optical

Back 34

Color

Front 35

Where plates collide, we recognize this as a ___ boundary?

Back 35

Convergent

Front 36

Where would one find the greatst ocean depths?

Back 36

Trenches

Front 37

All silicate minerals contain in their atomic structure _____ or polyatmic ions?

Back 37

Tetrahedrons?

Front 38

The most common ore minerals on Earth are:

Back 38

Silicates and carbons?

Front 39

Some environmental geologists are particularyl concerned with:

Back 39

Groundwater, meeting our energy needs, exploitation of ore minerals, and geological hazards

Front 40

The onterconnectedness of Earth systems implies that on the grand scale the Earth can be thought of as _____.

Back 40

A single System

Front 41

The book describes average residence time as _____.

Back 41

The amount of time required for the full stock of a material to cycle trhough a system

Front 42

If input exceeds output, then the amount or stock of the material in question:

Back 42

Increases

Front 43

Eath's human population is growing at an:

Back 43

Exponential Rate

Front 44

The approximate age of the Earth is:

Back 44

4.6 Billions Years

Front 45

All are geological hazards in this list except:
A.Hurricanes
b. Earthquakes
c.volcanism
d. landslides
e.tsunamis

Back 45

A. Hurricanes

Front 46

The Earth's core is made primarily of:

Back 46

Fe (Iron)

Front 47

The principle of uniformity or actualism states we can understand how rocks formed in teh past bby:

Back 47

Obersving how modern equivelants form

Front 48

All minerals are by definition:

Back 48

Crystalline

Front 49

What makes till so distinctive compared with other sediments?

Back 49

Lack of sorting

Front 50

Development of modern plate tectonics began with the Theory of _____ initially proposed by Alfred Wegener

Back 50

Continental drift