formation of sand dunes Flashcards

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1
Q

step 1 Windblown sand is deposited against an obstruction:

A

Pebbles or driftwood

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2
Q

step 2 As more sand particles are caught, the dunes ,,,,,,,,,,

forming rows at…

A

the dunes grow in size,

forming rows at right angles to the prevailing wind

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3
Q

Over time, the ridges of the dunes will be colonized and fixed by

A

vegetation this is called succession

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4
Q

The first plants (pioneer species) have to deal with:

A

Salinity

Lack of moisture as sand drains quickly (highly permeable)

Wind

Temporary submergence by wind-blown sand

Rising sea levels

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5
Q
A
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