Direction and Scale - Geog

Direction and Scale - Geog

Direction and Scale These icons indicate that teachers notes or useful web addresses are available in the Notes Page. This icon indicates the slide contains activities created in Flash. These activities are not editable. For more detailed instructions, see the Getting Started presentation. 1 of 15 Boardworks Ltd 2006 Learning objectives What is scale and how is it shown on a map? How are bearings measured?

2 of 15 Boardworks Ltd 2006 What is a scale? Anyone who has ever used a map to find their way, will know the importance of a scale. Knowing which direction to travel in is only part of using a map. To know how far it is to your destination, you need to use the maps scale. Scale is the ratio of objects on the map to the real world. For example on a map with the scale 4cm:1km, four

centimetres on the map is used to represent one kilometre in the real world. 3 of 15 Boardworks Ltd 2006 Using scale on a map Any method of estimating distance on a map requires the use of a scale. X Y How far is it The scale for

from the X to this map is the Y? 4 cm : 1 km Each one of these grid boxes is 4 cm wide and long. This is equivalent to 1 km in distance. 4 of 15 We can

estimate a distance of 4 km. Boardworks Ltd 2006 Map measuring But this is more difficult if the two points are like this Here we measure diagonally. X Imagine the

distance is 16 cm. Now we need to do some maths. Y Using a ruler, measure the distance between the two points. 5 of 15 Boardworks Ltd 2006 Calculating distance using a scale

The scale on the map was: 4 cm:1 km This means that: 4 cm 1 km 8 cm 2 km 12 cm

3 km 16 cm 4 km If our distance was 16 cm how many kms is it? 6 of 15 The answer would be 4 km.

Boardworks Ltd 2006 Measuring and calculating scale 7 of 15 Boardworks Ltd 2006 Scale lines We can also show scale on a map by using a scale line. 0 1km

1) What is the distance between the train station in Swanage and the end of Peveril Point? 2) What is the distance between the Town Hall and the woodland north of the groynes? Peveril Point 0 8 of 15

1km Boardworks Ltd 2006 Find the treasure 9 of 15 Boardworks Ltd 2006 Make your own map 10 of 15 Boardworks Ltd 2006

Learning objectives What is scale and how is it shown on a map? How are bearings measured? 11 of 15 Boardworks Ltd 2006 Compass rose How can we remember the points of the compass? Never eat shredded wheat!

Now think of your own slogan. 12 of 15 Boardworks Ltd 2006 Bearings You want to walk from your house (1) to your friend's house by the beach (2). What bearing do you need to take? Easy Guide to Bearings! 1. Draw a north line from your starting point. 2. Join your starting point to your destination with a straight line.

3. Put the line of your protractor on the north line with the middle of it on the starting point. 13 of 15 Boardworks Ltd 2006 Finding your bearings 14 of 15 Boardworks Ltd 2006 Finding your bearings

15 of 15 Boardworks Ltd 2006

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