Latitude

UNIT ONE: Toward Independence

Lesson 15

LATITUDE

LEFT SIDE

PAGE 36

1

WARM UP

WHAT I

KNOW

QUESTIONS

I HAVE

lines

on the Earth

parallel

Why is the Equator called that?

3

Read and Attach:

"Introducing Latitude"

Create margin notes on what you think is important.
- Individually - Underline and highlight important information; in the margin provide a question or comment foe each hihlighted piece.
- Share with your partner what you thought and selected. Made changes if necessary.

Click HERE to download Introducing Latitude

5

LAB:

Making and Using a Sextant

Make a sextant
- ?
- ?
- ?
- ?
Determine the latitude of various pounts in the room
- ?
- ?

RIGHT SIDE

PAGE 37

2

OBJECTIVES:

Explain how latitude works.
Describe how a sextant is used to determine latitude.

4

NOTES:

What Is Latitude?
- Lines
  - that run east to west
  - another name is "parallels"
- Distance
  - in degrees
  - north or south of the Equator
  - each degree of latitude is about 69 miles
  - total of 90º North and another 90º South
Facts About Latitude

Where does it begin?
- the Equator
  - an imaginary line that circles the Earth halfway between the North and South Poles
Where does it end?
- the North and South Poles
What is its unit of measurement?

Degrees (minutes and seconds)

Important lines of latitude

The Equator = 0º
The Tropic of Cancer = 23 1/2ºN
The Tropic of Capricorn = 23 1/2ºS
The Arctic Circle = 66 1/2ºN
The Antarctic Circle = 66 1/2ºS
The North Pole = 90ºN
The South Pole = 90ºS

Add the Following Items to Your Glossary (16-18)

Latitude

Equator

Sextant