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Social sciences

Geography

Grade 8

Mapwork

Module 17

Topographic maps and photographs

The big difference between a photograph and a map is that a map represents a vertical “plan” of a region, while a photograph presents a realistic image.

The ordinary photographs with which we are acquainted are taken with a camera that is held in the horizontal position.

Objects that are close to the camera look large and those that are further away seem smaller. Objects in the foreground also obscure information regarding what is behind them. This hidden area is known as the hidden ground. What happens behind the behind the double-storey building is unknown to us.

These photographs cannot be used for information when we draw maps. A special kind of aerial photograph is used for the drawing of maps. Such photographs are taken vertically, i.e. by means of a camera that is attached to a special aeroplane in such a way that it points down towards the earth.

Study a vertical aerial photograph of Pietermaritzburg. The 1:50 000 map and the aerial photograph show the same area. You will therefore be able to identify the objects that are the same on the photograph and the map.

Figure 1

Figure 2

Example

A technical college will be found on the map at 29º35’30”S; 30º23’43”E.On the aerial photo the position of the technical college is marked S .

By comparing the features of the card with those of the aerial photograph, may other characteristics will be recognisable.

Activity:

Use a topographic map and aerial photo of Pietermaritzburg and answer the following questions by circling the letter of the correct answer.

1. The point F on the aerial photo is the

a) national road

b) dirt road

c) railway

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. Higher than the surrounding area.
  1. East.
  1. Permanent.
  1. Dam.
  1. River.
  1. Hospital.
  1. Sports grounds.

2. If the residential area of Willowtown were to develop, it will develop to the

a) south

b) east

c) west

3. The most important freeway on this map is the

a) N6

b) N3

c) N2

4. The phenomenon marked E on the aerial photo is

a) water tower

b) athletic field

c) cricket field

5. The object marked with a 2 is a

a) hiking trail

b) bridge

c) river

6. The object marked with a C is a

a) factory

b) police station

c) residential home

7. The object marked with a I is a

a) water tower

b) golf course

c) silo

Questions & Answers

what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
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Source:  OpenStax, Geography grade 8. OpenStax CNX. Sep 11, 2009 Download for free at http://cnx.org/content/col11036/1.1
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