B-Lab Report 02 Florida 1 - All Versions
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School
University of South Florida *
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Course
2000
Subject
Geology
Date
Feb 20, 2024
Type
Pages
8
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Report 2-1
Activity 2.1, The Landscape of Florida (11 Minutes)
O
BJECTIVE
:
To learn how the general shape of the landscape and sea floor can be read from the state topographic map.
This activity uses the State of Florida 1:750,000-scale topographic map. 1.
Based on the density of topographic contour lines, what is the hilliest part of Florida? The flattest? (2 points, ☆
) Hilliest: Flattest: 2.
The highest point in Florida is located Walton County, in the western Panhandle. Can you locate it? What is the highest elevation in Florida that can be determined from this map? (2 points, ☆
) Notice that this topographic map also indicates the shape of the land under the sea, as bathymetric
contours and color-coding. The deepest areas are colored dark blue, and the shallowest areas are pale blue. Note also (for reasons that aren’t clear) the bathymetric contours are in meters
while the elevation contours are in feet
! This is a good example why geologists need to be able to convert between units. 3.
To a geologist, ‘Florida’ includes all the continental crust that juts into the Caribbean Sea, including the portion that is submerged beneath shallow waters. The submerged portion of the continents is called the
continental shelf
and is arbitrarily defined as the portion of the ocean shallower than 200 meters. Using this definition, locate the boundaries of the geologists’ Florida, extending from edge of the Atlantic continental shelf in the east to the edge of the Gulf of Mexico continental shelf in the west. Measure this distance on the map with a ruler
–
how many inches is it? (2 points, ☆
) Distance in inches: 4.
Now use the map scale
to convert this map distance to the actual width of the Florida platform, in kilometers (km). Show all your work to get full credit. (3 points, ☆
) 5.
During the peak of the last glaciation, approximately 15,000 years ago, so much of Earth’s water was tied up in glacial ice that sea level was about 330 feet (100 meters) lower than it is today! How far away from Tampa was the western coast of Florida at that time? Give your answer in kilometers. Again, use the map scale and show your work below. (2 points, ☆
) Activity 2.2, Topographic Contours (3 Minutes)
O
BJECTIVE
:
To review the meaning of topographic contour lines.
This warm-up exercise reinforces what you learned in your introductory laboratory about topographic maps. It uses the Lee, FL 7.5-minute topographic quadrangle. The Figure 2.1 is an enlargement of the topographic map in the vicinity of Lee, Florida. Now, suppose that the town of Lee wants to put in a paved path leading from the Junior High School to Stonewall Cemetery, where a popular teacher, tragically killed in a shop accident, is buried. Also assume that the path must be perfectly flat since many students are recuperating in wheelchairs due to the same freak accident. Trace the path on Figure 2.1 that leads from the Jr. High School to the cemetery and that is as flat as possible. (3 points, ☆
) Laboratory Number Two: Florida, The Land Beneath Our Feet I Name: Partners:
Report 2-2 Figure 2-1: Topographic Map for Activity 2.2 Activity 2.3, Eloise, FL Quadrangle (9 Minutes) O
BJECTIVE
:
To review how to read elevations off a topographic map.
This is a warm-up exercise designed to make sure you know how to read elevations on a topographic map. Determine the elevations of the following lakes. (3 points each, ☆
) Lake Elevation (feet) Lake McLeod (W edge of map) Lake Myrtle Flora Lake (S of Lake Garfield) Activity 2.4, Gap Lake and Goulds Quadrangles (FL) (
4 Minutes)
O
BJECTIVE
:
To review the concept of contour interval on topographic maps.
The Gap Lake and Goulds, FL quadrangles show the range of topography observed in Florida. Answer the following questions, which explore the relationship between hilliness and contours. 1.
What is the contour interval for these quadrangle maps? (1 2.
Why do you think the mapmakers decided to use a different contour interval for these two maps? (2 points, ☆☆)
?
Activity 2.5, Brooksville SE, FL Quadrangle (7 Minutes)
O
BJECTIVE
:
To learn how to construct a topographic profile from a topographic map.
On the graph on page Report 2-3, construct a topographic profile of an area in the southwest corner of this quadrangle, just to the north and east of Irvin Lake. The profile line should go in a straight line between the two dots marked on the topographic map
(7 points,
☆
).
Activity 2.6, Brooksville SE, FL Quadrangle (8 Minutes)
O
BJECTIVE
:
To learn how to construct a fall line path on a topographic map.
The exercise in this section requires you to predict the path of a ball rolling downhill on the landscape of the Brooksville SE quadrangle. Reproduced on page Report 2-4 is an enlarged portion of the topographic map of this quadrangle in the area just north of Mundgen Hill. There are three dots located on the figure labeled A, B, and C. Starting from each dot, draw the fall line by applying the rules described in your laboratory manual. There will be three separate lines. Make sure your lines are easy to see. (8 points
, ☆
) point each, ☆
)
Quadrangle Contour Interval (feet) Gap Lake Goulds
Report 2-3 Graph for constructing topographic profile, Activity 2.5
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