Questions

See how well you have understood the topics in this unit.

1. What do we use lines of longitude and latitude for?

2. Name the following lines: a) The line of latitude that divides the Earth into two equal hemispheres. b) The line of longitude that runs along 0º.

3. For each statement, identify the tropic to which it refers: a) The tropic that passes through Australia and Chile. b) The tropic closest to the Caribbean region. a) 33º56’S 18º28’E b) 40º45’N 73º57’W c) 35º41’N 139º42’E d) 51º30’N 0º08’W e) 10º30’N 66º55’W

4. Each set of coordinates tells you the position of a city somewhere in the world. Work out on which continent it is located and then use your atlas to help you identify the city.

5. For each of the following named cities, use your atlas to select the correct data from the two options in brackets to complete the latitude and longitude.

Los Angeles, USA: (34º, 45°) 03’N 118º15’W

New Delhi, India: 28º37’N (63°, 77º)13’E

Accra, Ghana: 5º33’ (N, S) 0º12’W

Toronto, Canada: 43º42’N 79º24’ (W, E)

Kingstown, St Vincent and the Grenadines: (0º,13º) 09’N (61º, 42º)14’W

6. Define the following terms:

Hemisphere

Circumference

North Pole

7. In your own words, describe the ‘dead reckoning’ technique. What is one problem with using ‘dead reckoning’ to calculate sailing speed?