Map Skills

Question 1

What do maps show

Answer 1

They show the view of the land from directly above

Question 2

What do vertical aerial photographs show

Answer 2

A view of the land from directly above the ground

Question 3

What is a orthophoto map

Answer 3

A map of an area that is created using an aerial photograph, it has been geometrically corrected and has a uniform scale

Question 4

Define contour lines

Answer 4

Symbolic horizontal lines which indicate the height and shape of a slope

Question 5

Define landscape features

Answer 5

Physical features we can identify on the land

Question 6

How do we represent objects on the ground in a map

Answer 6

Using symbols and colours

Question 7

How do contour lines work

Answer 7

Each contour line connects places that are the same height above sea level.

Question 8

Why do we use contour lines

Answer 8

To provide information about the height and shape of landscape features

Question 9

Who decides how many contour lines to show on a map

Answer 9

Map makers

Question 10

What is a contour interval

Answer 10

The distance between each contour

Question 11

Define cartographer

Answer 11

A person who makes maps

Question 12

How do cartographers get info about the land

Answer 12

Vertical aerial photographs
Satellite images
Land surveys done by peoe on the ground

Question 13

Define gradient

Answer 13

The angle of a slope compared to the horizontal. The steepness of a slope

Question 14

How do we identify a gentle gradient

Answer 14

If there is a big difference in the height between two places is small and the land distance is long

Question 15

What do we need to calculate gradient

Answer 15

We need to know the height difference between two places and the horizontal distance between the two places

Question 16

Read through pg 7

Question 17

What do vertical aerial photographs show

Answer 17

Views of the land taken from a camera fixed under a special aeroplane. They show the land directly above earth’s surface

Question 18

What do oblique aerial photographs show

Answer 18

The Lans from above but also from an angle

Question 19

Which map is more useful to cartographers and why

Answer 19

Vertical aerial photographs because they show earth’s surface from the same angle as a map

Question 20

Describe the scale of a vertical aerial photograph

Answer 20

Is it only accurate close to the centre of the photograph

Question 21

Define orthophoto image

Answer 21

A picture of the land that is made using computer technology

Question 22

Define distortions

Answer 22

Not the true shape of objects

Question 23

Define orthophoto map

Answer 23

A rectified image based on an aerial photograph with additional information from a map

Question 24

Define grid

Answer 24

A set of regularly spaced lines which provide a mathematical base for a drawing

Question 25

How are orthophoto images made

Answer 25

Using information from vertical aerial photographs

Question 26

What do orthophoto maps display

Answer 26

``` Place names Contour lines Heights Road numbers A grid showing coordinates ```

Question 27

Define spot height

Answer 27

Points marked with a dot that show the exact height of the land

Question 28

What are the contour intervals of orthophoto maps

Answer 28

5 metre intervals

Question 29

What do contour lines on an orthophoto map indicate

Answer 29

the shape and the height of different features

Question 30

Define topographic

Answer 30

Shape of the land

Question 31

Define natural features

Answer 31

Parts that are naturally occurring

Question 32

Define constructed

Answer 32

Made by people

Question 33

What is the scale of a tographical map

Answer 33

1: 50 000

Question 34

What are topographic maps

Answer 34

A map that indicates the features of the land's surface, such as mountains, valleys and hill, using contour lines.

Question 35

What does colour help with on a map

Answer 35

Makes it easier to identify the meaning of the symbols in the key

Question 36

Read through symbols on pg 12

Question 37

Define perennial river

Answer 37

Flows throughout the year

Question 38

Read through pg 13

Question 39

Define trigonometric beacon

Answer 39

A triangular symbol showing the exact height of a place and its own number

Question 40

Define benchmark

Answer 40

A map symbol with an arrow, showing the exact height of a place, in decimal numbers

Question 41

What do darker contour lines mean

Answer 41

They show the height 100 metres apart

Question 42

The numbers on the contour lines help you to see if a slopeis sloping up or down. They always face up the slope

Question 43

What is spot height

Answer 43

Shows the exact height of a place in metres, as a number next to a dot

Question 44

Read through pg 16-17

Question 45

Define ratio

Answer 45

Compares one number to another number of the same unit

Question 46

Define line scale

Answer 46

A line which marks the distance on a map compared to distance on the ground

Question 47

Define alpha-numeric grid

Answer 47

A grip with letters and numbers