Mapwork

Question 1

What are two different types of maps

Answer 1

Political
Population density and distribution
Physical
Transport
Topographic
Orthophoto

Question 2

What are SAs provinces

Answer 2

Western,northern, eastern cape
North west
Free state
Limpopo
Gauteng
Mpumalanga
Kwazulu-natal

Question 3

What is direction

Answer 3

Description of how one place lies in relation to another

Question 4

From is the?

Answer 4

Starting point

Question 5

To is the?

Answer 5

Ending point

Question 6

When determining flow of river:

Answer 6

Flow from high to low altitude
Flow away from dam walls
Contour v points upstream therefore river flows in opposite direction to contour v
Angle at which the tributaries join the main stream will indicate direction of flow

Question 7

What is true bearing

Answer 7

Measurement of how one place lies in relation with another

Question 8

How do you measure true bearing

Answer 8

Single reference point used. Eg true north

Question 9

What is the basic method of calculation

Answer 9

1) draw straight like joining two reference points
2) place protractor with origin on starting point and 0 aligned with TN
3) measure CLOCKWISE then read answers. Must be stated in degrees

Question 10

What is Alpha-Numeric

Answer 10

Simplest form of grid reference

Letters and numbers used to describe block subject is in

Question 11

What are co ordinates

Answer 11

They are far more accurate in measuring exact location

Question 12

What needs to be understood in order to determine co ordinates?

Answer 12

Lines of latitude and longitude
Degrees
Minutes
Seconds

Question 13

What are lines of longitude

Answer 13

Lines that join north and south poles (-3.2)

Question 14

What are lines of latitude

Answer 14

Parallel line, move equidistant N and S of equator (-3,6)

Question 15

Degrees?

Answer 15

Indicated in both map reference numbers and on top left corner

Question 16

Minutes?

Answer 16

Indicted by scales down the side and across top of map (each side is 1min)

Question 17

Seconds?

Answer 17

Not indicated on map therefore must be calculated

Question 18

Latitude readings are

Answer 18

Always SOUTH

Question 19

Longitude reading are

Answer 19

Always EAST

Question 20

What type of map is used for map referencing number

Answer 20

Topographical

Question 21

What is map referencing number

Answer 21

Topographical maps given a map reference/map ordering number

Eg 2229DD

Question 22

What does a map scale refer to

Answer 22

Ratio between a distance on a map and the corresponding distance on earth

Question 23

How is map scale determined

Answer 23

By how much detail is required on a map

Question 24

What are the types of map scale

Answer 24

1) ratio
2) line
3) words e.g one centimeter on map represents five hundred meters on land

Question 25

What does the scale of 1:100 000 mean

Answer 25

(1cm on map= 100 000 cm on land 100 000 cm = 1km) THEREFORE 1cm=1km

Question 26

What is the ratio scale for topographical maps

Answer 26

1:50 000 : 1cm=1km

Question 27

What is the ratio scale for orthophoto maps

Answer 27

1: 10 000 : 1cm = 1/2km

Question 28

When using topographic scale, how much do measured distances need to be divided by

Answer 28

2 (or x by 1/2)

Question 29

What is a map?

Answer 29

Scaled down version of real world

Question 30

What does 1: 10 000 divided by to convert cm into km and what type of map is it

Answer 30

Orthophoto | Divided by ten or multiplied by 1/10

Question 31

How much smaller is a topographical map than a orthophoto

Answer 31

5x smaller

Question 32

What are the two maps used in straight line distances

Answer 32

Topographical and orthophoto

Question 33

How do you get km in a topographical map

Answer 33

Measures actual distance between two points on the map then divide by two = distance in km

Question 34

How do you get distance in km in orthophoto map

Answer 34

Measure distance between two points and divide by ten

Question 35

When is curved line distance used for

Answer 35

Measuring distance

Question 36

What is the formula for area

Answer 36

A= lxb

Question 37

Find area for topographical map

Answer 37

Convert length and breadth cm readings into km by dividing each by two

Question 38

Find area for orthophoto map

Answer 38

Convert length and breadth reading into km by dividing by 2

Question 39

When finding area, what is the final answer measured in

Answer 39

Km squared

Question 40

How do you calculate in hectares

Answer 40

Area in km squared x 100

Question 41

When substituting values of formula into t= d/s what happens

Answer 41

Km cancel out and multiply answer by 60

Question 42

What is a contour and relief

Answer 42

Line of map that joins all places of equal height above sea level

Question 43

What is a contour

Answer 43

Line on a map that joins all places of equal height above sea level

Question 44

What are contour intervals on the topo map

Answer 44

20m

Question 45

What are the contours on the ortho map

Answer 45

Drawn at 5m intervals with 20 m intervals highlighted as dark lines

Question 46

What are contours used for

Answer 46

To show relief of a region

Question 47

What do the patterns created by the lines indicate

Answer 47

What type of features are found in the landscape | The nature of the slope

Question 48

How do we know the slope is steep with contour

Answer 48

The lines are closer together

Question 49

What does it mean if the contour lines are far apart

Answer 49

The slope is more gradual/gentle