<< Chapter < Page Chapter >> Page >

Social sciences

Geography

Grade 8

Mapwork

Module 11

Direction and bearing

1. Why should we be able to read a map?

A map is a reduction of reality as it seen perpendicularly from above and drawn to a certain scale. The scale indicates the number of times by which reality is reduced.

A good map provides information with regard to location, direction, distance, relief, routes and more. The reader can therefore read the information with ease and draw precise conclusions from it.

The series of 1:50 000 topographic maps of South Africa will be used for our studies. This is a collection of maps that cover the whole of South Africa. Each map in the series has a number to indicate its exact location and what its coordinates are. (see section 2.2.3)

A topographic map does not present phenomena of the landscape only, but also pictures the topography (relief) of the landscape by means of contour lines (see section 2.5.3).

These maps are all drawn to a scale of 1:50 000. This means that each centimetre on the map in reality represents 50 000 centimetres of the landscape. The true size is therefore reduced 50 times (see section 2.4).

To be able to read the map, you have to know and understand the symbols that are used in mapping (see section 2.5).

2. The basic elements of a map

2.1 Direction and Bearing

To be useful, a map needs to indicate the direction in which North is located. If such an indication is missing, the map must be rotated to make it readable, i.e. to have words running from left to right. This will position the northern part of the map in the position that is furthest from the reader.

2.1.1 Direction

The position of different places on the map in respect of one another can be determined by

The direction of the compass

Activity 1:

Complete figure 2 by labelling the 16 main compass points.

[lo 1.1]

Always take careful note of the point FROM which and the point TO which you have to work.

Example:

What is the direction FROM A to B = ENE

What is the direction FROM B to C = S

What is the direction FROM C to D = W

What is the direction FROM C to A = NW

What is the direction FROM B to D = SW

What is the direction FROM D to A = NNW

What is the direction FROM A to D = SSE

2.1.2 Bearing

Bearing is a more accurate measurement that direction, because it is expressed as an ANGLE.

All bearings are taken to the right (clockwise) from NORTH by means of a protractor.

Take good note of the points FROM which and TO which you have to work to determine bearing.

The steps you have to take are:

Connect the relevant points by means of a pencilled line.

Draw the line to North through the point FROM which you have to take the measurement.

Position the protractor by placing 0º against the north line, with the centre on the point from which you have to measure.

Measure the angle from the north line to the connecting line (pencilled line of Step 1) to the right (clockwise).

Example 1:

What is the bearing from A to B?

Example 2:

What is the bearing from A to B?

Activity 2:

Study the map and calculate the direction and the bearing.

[lo 1.1]

What is the direction?
a) From A to B?
b) From C to B?
c) From C to D?
d) From D to E?
e) From E to B?
What is the bearing?
a) From A to B?
b) From C to B?
c) From C to D?
d) From D to E?
e) From E to B?

Assessment

Learning Outcomes(LOs)
LO 1
Geographical EnquiryThe learner will be able to use enquiry skills to investigate geographical and environmental concepts and processes.
Assessment Standards(ASs)
We know this when the learner:
  • identifies and selects a variety of
geographical and environmental sourcesthat are relevant to the research;
  • interprets information from maps and
atlases, as well as graphic and statisticalsources;
  • calculates distance from maps and
compares it to real distance;
  • identifies physical features and features
created by people and aerial photographsand maps.

Memorandum

ACTIVITY 1:

ACTIVITY 2:

The Direction

  1. SW
  2. WSW
  3. ENE
  4. SSW
  5. WNW

The bearing is

  1. 180 + 33 = ± 213º
  2. 180 69 = 249º
  3. ± 75º
  4. ± 23º
  5. ± 94º

Questions & Answers

find the 15th term of the geometric sequince whose first is 18 and last term of 387
Jerwin Reply
The given of f(x=x-2. then what is the value of this f(3) 5f(x+1)
virgelyn Reply
hmm well what is the answer
Abhi
how do they get the third part x = (32)5/4
kinnecy Reply
can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
ninjadapaul
20/(×-6^2)
Salomon
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
I got X =-6
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
hmm
Abhi
is it a question of log
Abhi
🤔.
Abhi
Commplementary angles
Idrissa Reply
hello
Sherica
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
hii
Uday
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
kkk nice
Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
Kim
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Al
y=10×
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
how do you translate this in Algebraic Expressions
linda Reply
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
Got questions? Join the online conversation and get instant answers!
QuizOver.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Geography grade 8. OpenStax CNX. Sep 11, 2009 Download for free at http://cnx.org/content/col11036/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Geography grade 8' conversation and receive update notifications?

Ask