Geography-Term 1-Map Skills

Front 1

What are contour lines?

Back 1

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

Front 2

Define landscape features.

Back 2

Physical features we can identify on the land.

Front 3

Define model.

Back 3

A smaller, realistic copy or a real object or feature.

Front 4

Define cartographer.

Back 4

A person who makes maps.

Front 5

What factors might influence a cartographer's choice of contour interval?

Back 5

•Large areas-bigger intervals

•small areas-smaller intervals

Front 6

Why do cartograhers only name some of contour interval?

Back 6

To give some sort of guideline between the intervals.

Front 7

Define gradient.

Back 7

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

Front 8

How do you calculate gradient?

Back 8

Gradient=vertical height difference

------------------------------------

Horizontal distance

Front 9

When are is the slope steep?

Back 9

When the contour lines are close together.

Front 10

When is the slope gentle?

Back 10

When the contour lines are far apart.

Front 11

What is river valleys?

Back 11

Are lower than the surrounding area. They have a river flowing between them.

Front 12

What are spurs?

Back 12

Are pieces of land that stick out between different river valleys.

Front 13

What do the contour lines of a river valley make?

Back 13

V-shaped pattern

Front 14

What do the contour lines of spurs make?

Back 14

U-shaped pattern

Front 15

What are orthophoto image?

Back 15

A picture of the land that is made using computer technology. It is a combination of a map and vertical aerial photograph.

Front 16

Define distortions.

Back 16

Not the true shape of objects.

Front 17

What are orthophoto map?

Back 17

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

Front 18

Define grid.

Back 18

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

Front 19

What are vertical aerial photographs?

Back 19

Show the land taken from a camera fixed under a special aeroplane.

Front 20

What are oblique aerial photograph?

Back 20

Show the land from above but also from an angle.

Front 21

What is spot heights?

Back 21

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

Front 22

Define topographic.

Back 22

Shape of the land.

Front 23

Define natural features.

Back 23

Parts that are naturally occurring.

Front 24

Define constructed.

Back 24

Made by people.

Front 25

What are topographic maps?

Back 25

On the scale of 1:50000 are special maps that show different features on the land.

Front 26

What are perennial rivers?

Back 26

Flows throughout the year.

Front 27

Why a row of trees and cultivated land are not natural features?

Back 27

Because a farmer planted it.

Front 28

Is a dam a natural or constructed feature?Explain.

Back 28

Constructed- it is man-made.

Front 29

Name 4 types of height clues.

Back 29

•contour lines

•spot heights

•trigonometric beacons

•benchmarks

Front 30

What are trigonometric beacon?

Back 30

Triangular symbol showing the exact height of a place, and it's own number.

Front 31

What is a benchmark?

Back 31

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

Front 32

Define ratio.

Back 32

Compares one number to another number of the same unit.

Front 33

What is a line scale?

Back 33

A line which makes the distance on a map compared to distance on the ground.

Front 34

Define alpha-numeric grid.

Back 34

A grid with letters and numbers.