Using Latitude

1
Using Latitude
2
In your groups - Brainstorm as many
characteristics as you can concerning lines of
latitude

• Drawn East to West direction but are used to
  state lines in a north-south direction.
• Really circles of latitude
• Parallel or equidistant to one another

3
Characteristics of Latitude continued

• Circles of Latitude vary greatly in length
  (circumference)
• Longest is equator
• Going pole-ward the circumference becomes
  progressively shorter
• At poles they shrink to a single point
• An unlimited of parallels exist but not all are
  shown on maps.

4
Why is the Equator important when dealing with
lines of Lat?

• Starting point for measuring latitude.
• Only line in the system that is full
  circumference of and bisects the earth (great
  circle)
• Includes all points on the earths surface that
  are equally distant from both poles.

5
How are lines of latitude identified?

• In their angular distance in degrees north or
  south of the equator
• How many degrees is the equator?

6
How do you define the Northern Hemisphere?

• The half of the earths surface located north of
  the equator.
• All lines of latitude are labeled with a N after
  their value.

7
How do you define the Southern Hemisphere?

• Half of the earths surface located south of the
  equator.
• All lines of latitude here are labeled with an S
  after their value.

8
What value of degrees do we give the North and
South Poles?

• 90 degrees North
• 90 degrees South

9
How do we define low latitudes?

• 0 - 30 degrees N and S
• Lowest numbered parallels

10
How do we define middle latitudes?

• Between 30 - 60 degrees N and S
• Intermediate values

11
How do we define high latitudes?

• 60 - 90 degrees N and S
• Highest numbered parallels

12
What unit of measure do we use to measure lines
of latitude?

• Degrees
• Each degree is about 1/360 of the earths
  circumference.
• Each line of latitude equal to about 69 miles.

13
Each degree can be divided into 60 equal parts,
we call

• Minutes ()
• 1 min. of Lat. 1.15 miles
• 1 minute of latitude can be divided into 60 equal
  parts we call
• Seconds
• 1 Sec. of Latitude 100 feet

14
How do you read a latitude measurement?

• Given left to right in progressively smaller
  units
• I.E.39 degrees 07 minutes 15 seconds.