
Unit 16 - Global Positioning and Charts
Multiple-choice exercise
Choose the correct answer for each question.
Define latitude
- imaginary lines perpendicular to the equator
- angular distance east or west of the equator
- angular distance north or south from the equator
- angular distance from Greenwich
Longitude is measured from:
- the prime meridian
- Greenland
- Norfolk
- the equator
Which is always expressed first?
- Latitude
- Longitude
What is one nautical mile equal to?
- 2.6 kilometres
- 1.7 miles
- one minute of latitude
- one minute of longitude
At what point is one minute of longitude equal to one nautical mile?
- At Greenwich
- At the prime meridian
- at the North Pole
- at the equator
The carts that we use in the boating class are of what type of projection?
- strip chart projection
- Mercator projection
- actuated projection
- articulated projection
Which is a large scal chart?
- 1:1,000
- 1:1,000,000
If a chart has a 1:10,000 scale on it, it indicates that 1cm on the chart is equal to what distance on the Earth?
- 10,000 m
- 1 nautical mile
- 100 nautical miles
- 100 m
Heights of land on a chart are depicted as what?
- contour lines
- depth lines
- spot elevations
- contour elevation points
What is chart datum on a non-tidal chart?
- the highest high tide that occurs for an area on a chart
- the lowest low tide that occurs in an area on a chart
- water height at close to average water level
- the lowest water level ever recorded for an area