Answers to Friday 5: Oct. 30, Geog 12

 1.  Provide two erosional and two depositional features created by wind.

Erosional	Depositional
-wadis	-barchan dunes
-pedestals	-star dunes
-balancing rocks	-transverse dunes
-arches	-parabolic dunes
-erg	-longitudinal dunes

2.  What are the three types of weathering and provide an example of each.

Chemical weathering	Mechanical/Physical Weathering	Biological Weathering
-oxidation -solution/carbonation -hydrolysis	-frost shattering -Sedimentation    -pingo   -differential weathering -thermal expansion  -sheeting/exfoliation	-Lichens -Trees -Roots

3.  Explain carbonation.

Carbonic acid is a weak acid produced when carbon dioxide reacts with water known as carbonation. Carbonation is an important process in the formation of many caves and sinkholes.

4.  What conditions need to be present in order for a cave to form?

-the area must be tectonically stable and unaffected by glaciation for thousands of years.  Soluble bedrock like limestone, gypsum or dolomite.  A continuous flow of water through joints/cracks in this bedrock.  Acidic water.

5.  Draw a diagram that includes the major lines of latitude.

Bonus:

What is significant about the Prime Meridian?

0 degrees longitude, passes through the Greenwich, UK and time starts here.

Where did Karst Topography get it's name from?

From the Karst area of Slovenia where the first geologic study of caves occurred

Geography 12: Oct 29 & 30

 Thursday:

We did some work on Latitude and Longitude, some notes and a work sheet that included both military grid and using actual latitude and longitude to establish absolute location.  This also stemmed into a discussion on seasons and time.

We labeled these lines on a map and the seven continents.  

We did some review of Karst systems and watched this video from about 3 minutes onward.  And read pp. 118-120 in text

https://www.youtube.com/watch?v=EX0q5I3-HZI

Students worked on their field reports and corrected their river systems test.

Notes, discussion and videos on Aeolian landscapes.  

https://www.youtube.com/watch?v=-43_HBy9huc&t=2s

On Friday we had a Friday 5 and then rolled into review of Aeolian landscapes.  We watched this video:  https://www.youtube.com/watch?v=ugD0mM1fbDg

Students read p. 120-123 and completed a worksheet.

We finished labeling our maps (see blog post), these will be collected on Monday.

We finished up the class working on our field reports.