Beginner Map Reading Compass. Compass Parts of a Compass.

Slides:



Advertisements
Similar presentations
Using an Orienteering Compass
Advertisements

Introduction to Scale Maps and Basic Cartography
Map Reading Section 3 - B Continuation of Compass section.
1 SURVEYING LEARNING TO READ A COMPASS. 2 The compass is marked with the four cardinal points – north, east, south, and west. The compass is also marked.
Silver Training Compass use
MATERIALS NEEDED TO PINPOINT ONE’S LOCATION ON A MAP Pencil and eraser North-South axis Map (in official maps, the North- South axis is the right/left.
The Compass Rose.
Compass Points.
Earth Science Logistics: Collecting Labs (the remainder of semester)
The Lightweight Compass
Location and Direction
Topographic Maps An Introduction. Where Am I? What’s My Size?
Which North Pole does Santa Claus live at? True North –The earth’s axis of rotation Magnetic North –Where your compass points Grid North –Where the UTM.
Compass surveying.
Intro to Map and Compass
Turn in Lab 2 Put your name, section, and perm number on your answer sheet.
At which North Pole does Santa Claus live? North Referenc e.
Plotting a bearing on your map You have just located the first point in an orienteering course. The clue indicates that the next location is 1.2km away.
Duke of Edinburgh’s Award
Section 1: Finding Locations on EarthFinding Locations on Earth
Orienteering ALERT Cadet Alpha 3 rd California Jason Kim September 2006.
Plotting a Bearing onto your map Why we plot bearings Where am I? Location by resectioning Where is the ____ I can see in the distance? Location by intersection.
 Map - is a representation of the features of a physical body such as Earth.
Seventh Edition By David A. Madsen, Terence M. Shumaker, and David P. Madsen Civil Drafting Technology Chapter 7 Location and Direction.
Chapter 2-Maps as Models of the Earth By Samantha Pereira.
The Points of the Compass (1)
Sci. 1-1 Pages A. Map – a model or representation of the Earth’s surface.
Map and Globe Terms.
Navigation Ground School 2014 CI Pesto. Navigation: The process or activity of accurately ascertaining one’s position and planning and following.
Uncontrolled copy not subject to amendment Navigation on Land Using Map and Compass Learning Outcome 1 Part 1: Be able to show the different types of North.
Duke of Edinburgh Hillary Award COMPASS USE. PARTS OF A COMPASS.
Navigate Using a Map and Compass
Map Reading and Interpretation
Uncontrolled copy not subject to amendment Basic Navigation Using Map and Compass.
Do magnets need to touch a piece of iron or another magnet to exert a magnetic force on the iron or other magnet?
Navigation Using map & compass. Cardinal Directions There are four cardinal points on a compass: There are four cardinal points on a compass: North, South,
Magnetic Bearing A magnetic bearing is a bearing where the Magnetic North line is taken as 0  A compass points towards the magnetic north pole which is.
Finding Locations on Earth. Typical Graph This is an example of a typical graph we are all familiar with. The graph is made up of different “points” with.
LE2-C5S11T4pg Azimuths. Purpose The purpose of this lesson is to teach you how to determine azimuths.
Getting to know your compass. Standard Compass Basics Remember: RED IS NORTH!!! Remember: RED IS NORTH!!! The arrow on a compass will usually be either.
Topic: Maps PSSA: A/S8.D.1.1. Objective: TLW use cardinal directions and latitude and longitude to locate places on a map.
CONVERTING BEARINGS Before converting a grid bearing to a magnetic bearing and vice versa, there are two things you must do: 1. Update the magnetic declination.
1 MSL 201, Lesson 03b: Land Navigation Revision Date: 31 July 2011 LAND NAVIGATION Navigating by Azimuths.
Lab 2 – Topographic Maps & Land Navigation. Maps/Coordinate Systems ► Represent spatial relationship of things and shape of landscape ► Must have frame.
and Construction of Topographic Maps
Compass surveying.
Basics of Magnetism North pole, South pole, and magnetic field
Chapter 2 Jeopardy Maps as Models of the Earth
Using a Compass What is a compass? How does a compass work?
GRID BEARINGS Grid North is the northern direction of the north-south grid lines on a map. Bearings measured from Grid North are called grid bearings.
Longitude & Latitude Grid Maps.
What type of angle is it?.
Chapter 3 Models of the Earth
Chapter 6: Maps as Models of the Earth
Basic Navigation Lesson 1 ACP32 Vol2.
Plotting a bearing on your map
Geography: The Study of Earth
Finding Locations on Earth
Lesson III: Three Norths & Variation
Angles. Angles Angles Angles The distance from rotary table to Point B as measured along the wellbore is called a measured depth. The vertical distance.
Chapter 3 Models of the Earth
Mapping.
Locating Objects in the Night Sky
Attitudes of Planes and Lines
Longitude and Latitude Grid
Locating Objects in the Night Sky
Where is it In the night sky.
Where is it In the night sky.
Locating Objects in the Night Sky
Locating Objects in the Night Sky
Presentation transcript:

Beginner Map Reading Compass

Compass

Parts of a Compass

FInstrument used to show direction FPoints to the Magnetic North Pole FMaps are generally printed with north up  USGS topographic maps show GN, MN and H FGN is Grid North – the north of the map grid FMN is Magnetic North – where the compass points  H is True North – geographic north, the northern end of the north-south axis of the Earth FThe difference between True North and Magnetic North is magnetic declination FDeclination changes with time as indicated on the map, but the rate of change is not constant Compass

Position of the Magnetic North Pole in different years

Find this on your map TN MN

Declination MN vs. TN On the day the map was printed

FWhat is the declination on your map? FCurrent magnetic declination near Crested Butte is F10° 20’ E, changing by 0° 7’ West per year FDeclination is important when converting between map (true or grid) and compass (magnetic) azimuths FAzimuth is the angle measured from north in a clockwise direction (0° north, 90 ° east, 180° south, 270° west) Declination

Declination 10 o 20’ E As of July 1, 2009 From Crested Butte

We will round off to 10 for this presentation Please copy the formulas

Using Compass and Maps Understanding how to use declination Using a map and compass to find your location Although it’s not the perfect terminology, we will use the words bearing and azimuth interchangeably in this presentation

I drew a line from my home in CB So. to the top of Round Mt I measured the angle using a protractor = 150 o

I then lined up my compass with Round Mt and read the compass It showed 160 o I plotted the 160 o on the map and the result is shown here The difference in the two lines is the declination If I traveled using 150 o without adjusting for D. I’d miss by ½ mile

Calculate the Magnetic Baring Use the formula to calculate the Magnetic Baring we should enter on the compass Once we calculate the MB of 140 o we look at 140 o and see it’s lined up with the top of Round Mt The 140 o was drawn on this map to show you what a TN plot of 140 would look line

If the declination was W, you would use this formula

End of Compass Section 3 - A Next section Section continues with 3 – B