Year 10 Thursday 5/5: Mapping

Using the Synoptic Maps and the Sydney weather report below answer the following questions: (more questions under the synoptic charts). Copy the images from this page and put them in your blog.

1. What is it about the pressure system stalled over Australia that relates to the weather over the next 4 days?
   There is a high pressure which will mean warm sunny weather over the next four days with minimal cloud cover. 
2. What is the air pressure in each of the next 4 days for each of the capital cities? How does this correspond with the predicted weather for these cities?

Thursday

Brisbane - 1017 hpa

Sydney -  1022 hpa 

Melbourne - 1026 hpa

Canberra - 1024 hpa

Hobart - 1023 hpa

Darwin - 1012 hpa

Perth - 1012 hpa

Adelaide - 1025 hpa

Friday 

Brisbane - 1015 hpa

Sydney -  1012 hpa

Melbourne - 1024 hpa

Canberra - 1020 hpa

Hobart - 1020 hpa

Darwin - 1012 hpa

Perth - 1020 hpa

Adelaide - 1024 hpa

Saturday 

Brisbane - 1017 hpa

Sydney -  1013 hpa

Melbourne - 1018 hpa

Canberra - 1020 hpa

Hobart - 1016 hpa

Darwin - 1012 hpa

Perth - 1020 hpa

Adelaide - 1020 hpa

Sunday 

Brisbane - 1016 hpa

Sydney -  1018 hpa

Melbourne - 1024 hpa

Canberra - 1020 hpa

Hobart - 1024 hpa

Darwin - 1012 hpa

Perth - 1016 hpa

Adelaide - 1024 hpa

What is the contour interval (sometimes abbreviated CI)? Convert to metric. 

20 feet (6m)

What is the scale of the map? Convert it into the metric system.

1cm = 1 mile or 1cm = 1.6 km

What is the gradient of the line? Calculate in metric system.

859-680 = 121 (36m)

2cm line = 2 miles (3218m)

gradient = 3218/36

= 89