Definitions and diagrams
Ablation: the removal of snow and ice by melting or evaporation, typically
from a glacier or iceberg.
Abrasion: erosion of bedrock of a stream channel by impact of particles
carried in a stream and by rolling
CHAPTER 5 WORKSHEET
WEATHERING AND EROSION
Silicate minerals that are most susceptible to chemical weathering at the earth's surface
a. must not be very dense (they have a low specific gravity)
b. form under conditions of high temperatur
CHAPTER 19 WORKSHEET
When unconsolidated material moves downslope by flowing the
a. rate of movement is always rapid.
b. particles within the moving mass are mixed in a chaotic fashion.
c. moving mass moves at a uniform rat
CHAPTER 18 WORKSHEET
WIND AND DESERTS
Which process creates a desert pavement?
a. deposition by ephemeral streams
b. deflation in dry areas
c. deposition of sand around an obstacle
d. abrasion by wind
Which process creates a dune?
The Big Bang Theory
The Big Bang Theory is the currently accepted explanation of the beginning of the
universe. The big bang theory proposes that the universe was once extremely compact,
dense, and hot. Some original event, a cosmic explosion called the b
CHAPTER 1 INTRO TO GEOLOGY
MAIN TOPIC QUESTIONS & ANSWERS
Describe at least three aspects of geology that make it different from other sciences.
Time factor: The earth has been evolving over long periods of time. Many geologic
GEO 12 Notes
There are different categories of volcanoes the difference stemming from
varying degrees of viscosity (fluidity/thickness)
1. The first is ANDESITIC (Andes Mountains)
occur at subduction zones
GEO 12 Notes
The 4 spheres are: lithosphere (land), hydrosphere (water), atmosphere (air) and
biosphere (living things).
All the spheres interact with other spheres. For example, rain (hydrosphere) falls
from clouds in the atmosphere t
GEO 12 Notes
The physical, natural and human characteristics that describe a place and
distinguish it from other places.
Location of a place can be expressed in terms of its proximity or distance from
another place on Earth. It is based on
GEO 12 Gradation
Gradation Quick Notes
1. Weathering processes and related terms
a. Acid action dissolves limestone
B. Physical / mechanical a. exfoliation
b. frost shatter
C. Mass wasting and related terms - soil creep, slumping.
GEO 12 Weather Unit Review
Most weather takes place in the troposphere - 17 kms high at equator
= top limit
Average atmospheric pressure at sea level is 30 inches 101325 Pa
So. 1 kPa = 10 millibars
101.325 kPa 1013.25 mbar