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Summary Grade 9_SS Part 1 : Geography Summaries

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Grade 9 SS Geography (Part 1) summaries including Term 1-4 content, in a colorful format with additional notes by our editor to enhance the learning experience and stimulate your interest in Geography. Serve as excellent basis of Geography to create foundation for the future senior grades.

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  • May 15, 2023
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notedx19
SOCIAL SCIENCES

, CONTOUR LINES [MAPWORK]
CONTOUR LINES → (contour) lines on a map > connect places of the same height above sea
level [indicate landscape phenomena]

→ symbolic horizontal line indicating height and the shape of the slopesi

→ accurate way to indicate relief on maps [shape, size & steepness]

[relief > shape of the earth's surface > unevenness of the surface]


NOTES:

Z Numbers / figures on the
contour lines > HEIGHT (in

Steep slope Gradual slope meters above sea level)
Z Contour interval > distance
between each contour line
(e.g. 20m)

DIFFERENCE BETWEEN A HILL
AND A RIDGE:

Height (m) ridge > long, narrow & steep
hilltop / mountain range

HILL




RIDGE




STEEP & GRADUAL SLOPES:

[Slope = Gradient]

Gradient > describes how style is a slope [determined by the angle of the slope]
GRADE 9 > TERM 1



STEEP GRADIENT IN SLOPE → if there is a large difference in height between locations,
while the horizontal distance between the two locations is small (e.g. cliff) [contour lines
that are CLOSE to each other]

EVEN / GRADUAL GRADIENT IN SLOPE → if there is a small difference in elevation between
locations, while the horizontal distance between the two locations is far [contour lines
that are FAR apart]
gradient=
*** a small dot ( ⚫ ) > highest point difference in vertical height [m]
horizontal distance [m]



2 © Noted Summaries Grade 9 SS Part 1 : Geography www.notedsummaries.co.za

, RIVER VALLEYS & SPURS:

VALLEY → low-lying land between hills and mountains where rivers flow thickly > ( V
shaped and runs upwards )

SPUR → finger-like pieces of land that run down from a mountain or hill > ( U shaped and
run downwards ) > stone ridges that form the valley




3 © Noted Summaries Grade 9 SS Part 1 : Geography www.notedsummaries.co.za

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