1. Why is that Map so Small??? THE INS AND OUTS OF HOW TO USE A SCALE

2. What is a scale?  The scale tells the relationship between distances on the map and distances in real life  Ratio of map distance to actual distance

3. The World Under the Microscope  Large Scale Map-  Small Scale Map-  Think About Task- Page 39 (a-d)

4. Three ways of showing scale

5. Statement scale  Written in words  For example:  1 centimeter to 1 meter (1 cm to 1 m)  I centimeter to 10 meters (1 cm to 10 m)  1 centimeter to 10 kilometers (1 cm = 10 km)  Which of the above is a statement scale?

6. Linear or line scale  Shown by a numbered line  Drawn like a ruler  Divided into equal parts  Most common way used  Which of the above is a linear scale?

7. The Fraction  Shown in numbers  Also known as R.F.  For example:  1:100  1:1,000  1:100,000  Which of the above is an R.F. scale?

8. But it is still confusing?  The smaller the number on the bottom of the map scale, the more detailed the map will be  A 1:10,000 map will show objects ten times as big as a 1:100,000 map but will only show 1/10th the land area on the same sized piece of paper

9. Try this!!!  Arrange the following map scales from the largest to the smallest:  1:100,000  2 cm to 500 m  1:20,000  1 cm to 30 km

10. Answer!!!  Arrange the following map scales from the largest to the smallest:  1:100,000 – 1/100,000 - 3  2 cm to 500 m – 1/25,000 -2  1:20,000 - 1/20,000 - 1  1 cm = 30 km – 1/3,000,000 - 4

11. We already know what a scale is but how do you use it??  What do we need to make accurate measurements???  What happens if the scale is in miles and you are looking for kilometers?  Online Conversion - Common Length Conversions Online Conversion - Common Length Conversions

12. Online Conversion - Common Length Conversions  http://www.onlineconversion.com/l ength_common.htm http://www.onlineconversion.com/l ength_common.htm Check this out!

13. Measuring Distance :

14. What is the distance between :  If I was going to fly from London to Rome how far would I have to travel in Kilometers? In Miles?  If I took a cruise from Bombay, India to Mogadishu, Somalia how far would I have to travel? If the boat went 32 kilometers per hour how long would it take??

15. But what happens if I want to measure the distance of a road, a railroad or a river??

16.  STEP 1:  Place a paper strip along the first straight portion of the river. Mark the starting point A  Page 43 will explain further

17.  STEP 2:  Mark the length of the first straight portion on the paper

18.  STEP 3:  Turn the paper strip along the second straight portion. Mark the length again. Repeat the steps until your reach the ending point you, say point B

19.  STEP 4:  Measure the length of the river between punts A and B with a ruler. Place the measurement against the scale on the map and read off the answer

20.  The scale reads 1 cm on the map equal 500 km on the ground  Thus, say if the measured distance is 3.2 cm, how far is it on the ground?

21. How long is the river???  If I wanted to take a safari down the Nile River from Alexandria, Egypt to Khartoum, Sudan. How far would I go???  Find a map of the Nile in your atlas

22.  On the map, the scale showed that about 1.25 inches equals 5 miles.  How do they get that number 1/250,000???  1.25 Inches / 5 Miles (convert into inches) =  1.25 Inches / 316,800 Inches (reduce fraction) =  1 Inch / 250,000 Inches  Online Conversion - Common Length Conversions Online Conversion - Common Length Conversions

23. Time to use Scale on a Voyage!!

24. DateCity, CountryLatitude/ LongitudeItinerary for each city. 23/ 10/09Hong Kong, China22N; 114EBefore I left on my journey, I prayed at the Tin Hua Temple for a safe journey and that I would not run out of fuel!!! 24/10/09

25. Steps to follow!!  Measure the distance to the next destination using your atlas. Make sure it is not over 2500 miles or 4000 Kilometers  To locate your city on your map use the latitude and longitude  On Your map, mark the next city you are going to, write the name of the city and draw a line from the city you are arriving from  Write the distance on the line that connects the cities  Write the information into your travel log  REMEMBER at least 5 continents and 3 oceans.  It can be tricky, so be careful