Map Reading Map Reading

Measuring the length and distanceMeasuring the length and distance

Measuring straight line distance betweeMeasuring straight line distance between two points.n two points.

1.1. Join the two places with a straight line.Join the two places with a straight line.

2.2. Measure the length between them on the map with a ruler. Measure the length between them on the map with a ruler. 5.5 cm5.5 cm

3.3. Identify the scale of the map: 1cm to 3.2 km Identify the scale of the map: 1cm to 3.2 km

4.4. Do the calculation for the answer: 3.2 km X 5.5 = 17.6kmDo the calculation for the answer: 3.2 km X 5.5 = 17.6km

Measuring straight line distance Measuring straight line distance between two points.between two points.

1.1. Join the two places with a straight line.Join the two places with a straight line.

2.2. Measure the length between them on the Measure the length between them on the map with a ruler.map with a ruler.

3.3. Identify the scale of the mapIdentify the scale of the map

4.4. Do the calculation for the answer: Do the calculation for the answer: Scale X Distance on the mapScale X Distance on the map

Finding the actual ground distance of a Finding the actual ground distance of a curved line by using a piece of paper.curved line by using a piece of paper.

1.1. Use a piece of paper Use a piece of paper with straight edge.with straight edge.

2.2. Divide the road into Divide the road into different parts. Each different parts. Each part could be part could be measured as a measured as a straight line.straight line.

Finding the actual ground distance of a Finding the actual ground distance of a curved line by using a piece of paper.curved line by using a piece of paper.

3.3. Place the edge of Place the edge of the paper against the paper against the first part of the the first part of the road.road.

4.4. Use to tip of a pencil Use to tip of a pencil to pin the paper at to pin the paper at the end of the first the end of the first part , the twist the part , the twist the paper till attaches to paper till attaches to another straight part.another straight part.

Finding the actual ground distance of a Finding the actual ground distance of a curved line by using a piece of paper.curved line by using a piece of paper.

5.5. Same method is applied to measure the remaining Same method is applied to measure the remaining straightstraight

Finding the actual ground distance of a Finding the actual ground distance of a curved line by using a piece of paper.curved line by using a piece of paper.

6.6. Place the paper along a ruler and obtain the Place the paper along a ruler and obtain the map distance of the road in cm.map distance of the road in cm.

Finding the actual ground distance of a Finding the actual ground distance of a curved line by using a piece of paper.curved line by using a piece of paper.

7.7. With reference to the linear scale, With reference to the linear scale, measure the actual ground distance of measure the actual ground distance of the road from Perth to Sydney.the road from Perth to Sydney.

8.8. Do the calculation: the scale is 1.5 cm to Do the calculation: the scale is 1.5 cm to 500km. So the actual ground distance of 500km. So the actual ground distance of the road is (10.7/1.5 X 500m)=3567kmthe road is (10.7/1.5 X 500m)=3567km