GEOG 1300b
Physical Geography
• Your TA: Michael Allen
Introductions
• Michael Allen:
• First year M.Sc. student.
• I study urban/surface climates with Dr. James Voogt
• I graduated from the University of Portland in the U.S. in May.
• Tell me:
• Your name
• Your favorite London restaurant/bar.
Lab Policies
• You: Labs are due at the beginning of the following lab section
• -10% if turned in after the start
• -10% penalty per day if you turn it in late.
• Taken off the base score
• Me: Send in your marks within 72hrs.
• Powerpoints are downloadable from: allenclimatelab.org
My office is
SSC 1413
Office Hour(s):
Thursday
11am to Noon
Email:
mallen85@uwo.ca
Topographic Maps
Show changes in elevation
using contour lines
Topographic Maps
Legend (on back)
Adjoining Maps
Map Scale/
Contour Interval
Map Scales
Ratio scale: the ratio of the distance on the map to
the distance in the real world.
1 “unit” on the map = 100,000 “units” on the ground
Q2: Reading Lat/Long Coordinates
33’
Latitude/Longitude shown as
alternating Black/White Lines
32’
43° 32’ 30” N, 80° 26’ 25” W
31’
29’
28’
27’
26’
Q2: Reading Lat/Long Coordinates
Latitude/Longitude shown as
alternating Black/White Lines
Example: On your map
What is at 43° 7’ 20” N, 81° 19’ 50” W?
Answer: Burr
Q5: Reading UTM Coordinates
UTM Coordinates show as blue
lines around the map
This is the same as your
map (Look at the bottom
left).
Blue lines are drawn every 1km
Q5: Reading UTM Coordinates
UTM Coordinates show as blue
lines around the map
Example: On your map
What is at 480600 E, 4785600 N?
Answer: Campground
Q8: Azimuths and Compass Bearings
Q8/14: Azimuths and Compass Bearings
45° azimuth =
N 45° E bearing
123° 25’ azimuth =
S 56° 35’ E bearing
Q9/10: Vertical Exaggeration
See the emailed “Exercise #1
information” sheet
Q11: Converting Lat/Long minutes to decimal
47° 26’ N
Divide minutes (26’) by 60.
47.(26/60)°  47.43°
Q11: Distance based on Lat/Long Coordinates
Q11: Antipodes
The antipode of any spot on
earth is the point on earth’s
surface that is diametrically
opposed to it.
Two points that are antipodal
to each other are connected
by a straight line running
through the centre of the
Earth.
See how this works here
Q11: Calculating antipodes
x° N/S, y° E/W
x° S/N (180-y°) W/E
50° N, 65° 15’ E
50° S 114° 45’ W
For latitude, the angle is the
same with different orientation.
For longitude, the angle is
replaced by its supplementary
angle with different orientation.
Q12: Time Zones