Transcript Map Reading

Map Reading
Measuring the length and distance
Measuring straight line distance
between two points.
1.
2.
3.
4.
Join the two places with a straight line.
Measure the length between them on the map with a ruler.
5.5 cm
Identify the scale of the map: 1cm to 3.2 km
Do the calculation for the answer: 3.2 km X 5.5 = 17.6km
Measuring straight line distance
between two points.
1.
2.
3.
4.
Join the two places with a straight line.
Measure the length between them on the
map with a ruler.
Identify the scale of the map
Do the calculation for the answer:
Scale X Distance on the map
Finding the actual ground distance of a
curved line by using a piece of paper.
Use a piece of paper
with straight edge.
2. Divide the road into
different parts. Each
part could be
measured as a
straight line.
1.
Finding the actual ground distance of a
curved line by using a piece of paper.
Place the edge of
the paper against
the first part of the
road.
4. Use to tip of a pencil
to pin the paper at
the end of the first
part , the twist the
paper till attaches to
another straight part.
3.
Finding the actual ground distance of a
curved line by using a piece of paper.
5.
Same method is applied to measure the remaining
straight
Finding the actual ground distance of a
curved line by using a piece of paper.
6.
Place the paper along a ruler and obtain the
map distance of the road in cm.
Finding the actual ground distance of a
curved line by using a piece of paper.
7.
8.
With reference to the linear scale,
measure the actual ground distance of
the road from Perth to Sydney.
Do the calculation: the scale is 1.5 cm to
500km. So the actual ground distance of
the road is (10.7/1.5 X 500m)=3567km