Study the synoptic weather map and answer questions that follow: Name the lines joining all places of the same air pressure. Identify the season. Provide two pieces of evidence visible. Identify weather system A and describe air circulation. Describe weather conditions at station C.

1.5 (a)
Isobars

1.5 (b)
High pressure system / Anticyclone

1.5 (c) Two pieces of evidence:

1. Closed isobars forming elongated oval shape around the centre with highest pressure value.
2. Clockwise and diverging wind directions at surrounding weather stations.

1.6 (a) (i)
Low pressure system / Depression

1.6 (a) (ii)
Air converges inwards spiralling anticlockwise around the centre.

1.6 (b)
Station C records south-westerly winds of 25 km/h, $8/8$ cloud cover, continuous moderate rain, temperature of $18^\circ$C and pressure falling by 1.0 hPa.