Geography 1100 Nov 6
Structure is the nature and arrangement of landform materials
A process refers to all phenomena associated with the shaping of geologic structures
and material, it includes endogenous processes such as volcanism and exogenous
process , these happen at the surface, they wear away land materials. it is the removal
of a hand surface.(erosion, weathering)
Stage. Time is involved in stage, sequential changes occur. time is involved but we cant
say that it is a number of years of centuries. all we can say about time is that it is a
process that operates that causes a sequence of events to occur on that structure. time
related but not absolutely time dependent changes. Stage is the amount of word done
on that landform. Work results into stage in the structure.
occur near the earth surface and lower surfaces. gravity plays a major role. the energy
generally being used occurs from the energy from the sun. When you think of erosional
processes (wind water) the energy that causes water ...finish this.
the energy that lifts this water comes from the sun.
happen inside the earth. energy comes from inside the earth. can represent the
movement of earth materials. Volcanism, melting of rock to a liquid state.
What we see when thinking about earth processes:
We might see places like the grand canyon. What are you looking at when you look at
the grand canyon? A rock formed by land/water erosion.
There are different types of rocks. Some are harder to erode then others. The
steepness of the actual escarpment is reflective of what it is made of. Sandstone is
more difficult to erode making it vertical. The hermit formation is a lot easier to erode.
The earth is very old. A long time has passed for things to happen. Most of earth history
would be classed as Precambrian. The period of time where most of the earth formed.
Mesozoic- time of the dinosaurs.
Cenozoic-age of the mammals
Holocene- land of the last ice age
anthoroczone- age of humans Geography 1100 Nov 6
CN Tower. Take the height of the CN tower. Compare our life time to the age of the
earth(geological time). The skypod is 447 meters above the ground. Your life represents
about 0.01 mm less that the thickness of a piece of a paper. Our lifetime is about the
same thickness of a piece of paper when comparing it to the height of the CN tower. Not
Sizemic energy can operate in the following
S waves-Shear (look like a slinky)- travel slower. The rate of speed depends of what it is
p waves- Push/Pull Compressional - travel the fastest
Earth Materials aren't all the same, there are minerals, elements etc. We rely on all for
different types of resources. Below is an image of substances with different densities.
Water has a density of 1.0. Everything is compared to water, making it 1.0. Another
mineral is Quartz(2.6) it is 2.6 x denser them water. Quartz would be 2.6 x the density of
water. Another common mineral is Olivine (3.3). Next is Iron (8.0) It is 8 times the
density of water. Geography 1100 Nov 6
If we made observations from the sizemagraphs places all around the world we may
The earth is comprised of different things of different depths of the eatrhs surface. What
is the inside of the earth like? Something below (earths core) is really hot.
If we took the earth apart, what would we see? If we started at the centeew andwored
our wau our. We would have an inner core (ssolid iron nickel) In the centre it is really hot