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Geography > OS Maps > Flashcards

OS Maps Flashcards

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1
Q

What is an Ordnance Survey?

A

The OS is the Irish national mapping agency

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2
Q

What is scale?

A

Scale is the ratio between the distance on a map and the distance on the ground it represents

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3
Q

What is the grid used for?

A

The grid can be used to find different features

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4
Q

What are the names of the lines on the OS map?

A

Northings and Eastings

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5
Q

What is colour used to show?

A

Uplands, Lowland, towns and water

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6
Q

What are coloured symbols used for?

A

They are used to indicate features on the landscape

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7
Q

How do you draw a sketch map?

A

They are made by drawing a box half the length of both sides of the map.

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8
Q

What does the grid help you do?

A

The grid helps you locate the required features.

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9
Q

Should you sketch the features? Should they be labelled?

A

Yes. Yes

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10
Q

When doing a sketch map what else should you draw outside the map?

A

A key/legend?

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11
Q

How do you calculate the area of a maps location?

A

Multiplying the length by height

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12
Q

How can irregular areas be calculated?

A

Counting grid square

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13
Q

What do you add to the end of an area measure?

A

Km2

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14
Q

How is height shown on a map?

A

Colour

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15
Q

What height does brown represent?

A

Upland

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16
Q

What height did green represent?

A

Lowland

17
Q

How else is height shown?

A

Contour lines

18
Q

What are contour lines?

A

Lines connecting places of equal altitude

19
Q

What do close contours show ?

A

Steep slopes

20
Q

What height on a map classifies a mountain?

A

400m+

21
Q

What height are hills?

A

200-400m

22
Q

How are valleys shown on a map?

A

Valleys are shown in green with widely spaced contours.

23
Q

How can a straight line distance be measured?

A

With a ruler

24
Q

How can curved lines be measured?

A

With a strip of paper

25
Q

List the 3 ways scale is shown on a map

A
  1. Representative fraction
  2. Linear scale
  3. Statement of scale
26
Q

What does Representative Fraction mean?

A

The scale is given as a ratio

27
Q

What is a linear scale ?

A

The scale is shown along a ruled line on the map legend. This line is divided into kilometres or miles. The line is then subdivided into tenths of a kilometre or a mile

28
Q

What is a statement of scale?

A

The scale is give in words

29
Q

Where do you find the symbols, outside a map?

A

A legend

30
Q

What is the grid divided by?

A

Northings and eastings

31
Q

What does the map have 1 of ?

A

Subzone letter

32
Q

Give the 2 steps for calculating the area of a regular shape

A
  1. Count the number of squares along the side & bottom of the map
  2. Multiply the 2 totals to get the area in square km
33
Q

Give the 4 steps for calculating the area of an irregular shape.

A
  1. Count the number of squares that are fully covered
  2. Count the number of squares that are half covered or more
  3. Ignore any squares that are less then half covered
  4. Add the totals together

Geography (13 decks)

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