Synthesis, evaluation and skills
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What is a grid reference and in what order is it read?
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All Flashcards in Topic 13.5
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13.5.110 cards
What is a grid reference and in what order is it read?
Numbers locating a place: **eastings** (read across) first, then **northings** (read up) -- 'along the corridor, then up the stairs'.
Four-figure vs six-figure grid reference?
**Four-figure** names a whole grid square (1911); **six-figure** splits the square into **tenths** to pin an exact point (194115).
How do you give a six-figure grid reference?
Find the four-figure square, then estimate **tenths across** (easting) and **tenths up** (northing), and combine.
What does a 1:50 000 scale mean?
1 cm on the map = **0.5 km** (500 m) on the ground; multiply measured cm by 0.5 to get km.
Convert 3 cm on a 1:50 000 map to a real distance.
3 x 0.5 = **1.5 km** on the ground.
How do you read a compass direction from A to B?
Stand at A and face B; read **N/NE/E/SE/S/SW/W/NW** from the way you must travel.
How do you read a value off a time-series graph?
Find the time on the x-axis, go up to the line/bar, read the **y-axis value** across -- quote it with its unit.
How do you calculate the difference between two peaks?
Read both peak values and **subtract** the smaller from the larger.
What does a skills read need to score the mark?
The **exact figure with its unit** (km, grid digits, index value) -- a trend word alone scores nothing.
Name one real urban graph students read in Option G.
A congestion index (Lagos), a pollution time-series (Barcelona superblocks), or a road-pricing graph (Singapore).
Topic 13.5 study notes
Full notes & explanations for Synthesis, evaluation and skills
Geography exam skills
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