Model In the overlay map in FIGURE1 , the base map depicts the continent of Antarctica, territorial claims and scientiýc bases. The overlay illustrates mineral deposits.
FIGURE1 Constructing an overlay map of mineral deposits in Antarctica
Territorial claims and scientific bases
Constructing an overlay map Base map must have a title. Base map
Overlay map must have a title.
140°W
KEY
120°E
Mineral deposits
Base map
ROSS SEA
Claims
AMUNDSEN SEA
Bases
Use light colours on the overlay map.
Only the base map needs to
There is no need to trace the outline of the map onto the overlay, as it can be seen through the overlay. Overlay sheet (tracing paper) Place the overlay map key at the opposite corner to the base map key.
have a north arrow, scale and border.
WEDDELL SEA
KEY Overlay map
60°W
Mineral deposits
0 500 1000 km
40°E
Sticky tape as hinge
A good overlay map: • is drawn in pencil ýrst, with colour added later • includes BOLTSS on the base map • uses light colours on the overlay so the base map information remains visible • includes a key for the element depicted on the overlay • is hinged to the base map using sticky tape • includes a title for the overlay. 8.10.2 Showme How to complete an overlay map You will need: • two or more maps of the same area, drawn at the same scale, and showing different information • tracing paper or clear transparency sheet
• cardboard (optional) • clear adhesive tape • a black lead pencil • coloured pencils.
Procedure Step1
Create a base map of an area showing the distribution of features you want to display (see FIGURE2 ). Base maps are drawn on clean white paper. To make a base map, ýnd a map of the area you want to show, and trace the features relevant to your purposes. Make sure you include BOLTSS.
Jacaranda Humanities Alive 7 Victorian Curriculum Third Edition
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