What are large scale maps better for
Why
Showing individual buildings in detail
They only cover a small area of land
What are small scale maps best for
Why
Travelling either by car or walking
They cover large areas of land
What do contour lines show
Height of land
What is the gradient of the land in closer contour lines
Sloping sharply
The further apart the contour lines,
The flatter land will be
What does a u shaped valley look like in terms of contour lines
Wide contour lines enveloped by narrow contour lines, with wide contour lines at the highest spot height
What does a v shaped valley look like in terms of contour lines and other features
Will occur where a rivers estuaries are
Narrow contour lines, then wide ones at the top
What do saddleback hills look like in terms of contour lines
Two peaks with narrow contour lines at the highest spot height, then gradually widening contour lines
What to use to measure distance
Ruler and a scale
What are eastings
Grid reference numbers increasing from left to right
What are westings
Grid numbers increasing going upwards
For four grid references, which point is the grid reference at
The left bottom corner of the square
Where the easting and northing meet
How to figure out which numbers go first in a grid reference
Along the corridor
Up the stairs
What distance does a six figure grid reference pinpoint a place within
100 metres
Which way does the top face in an ordnance survey map
North
Give the 8 point compass clockwise from north
N
NE
E
SE
S
SW
W
NW
Name the three norths that we use with maps
Magnetic north
Grid north
True north
What is magnetic north
The direction in which any magnetic compass will point
What is grid north
The direction of a vertical grid line on an ordnance survey map, reaching from north to south
What is true north
The direction of the Earth’s geographic north pole
What north will a magnetic compass always point to
Magnetic north
What are bearings for
When even a 16 point compass isn’t good enough to get a very accurate reading
Which colour is the end of the arrow that points to magnetic north
Red
What are bearings
Numbers around the magnetic needle
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Skills6
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