coastal systems- tides

?
tides are the _______ rise and ____ of the ocean surface.
periodic
fall
1 of 12
what are tides casued by?
the gravitational pull of the sun and moon. the moon has 2x the effect of the sun.
2 of 12
the formation of tides
moon pulls water towards it= high tide. there's a compensatory bulge on the opposite side of the earth.in the areas between the 2 bulges the tide is the lowest. the earth spins so there are two high and two low tides a day.
3 of 12
twice a month when the moon, sun and earth are aligned the tidal force is the what? this produces a what tide? and the _______ monthly tidal ranges
strongest
spring tide
highest
4 of 12
the lowest tidal ranges are called what ? when the sun and moon in relation to the moon are positioned at what to each other?
neap tide
right angles
5 of 12
tides are an important source of what in the coastal system?
energy
6 of 12
they generate powerful currents that transport what?
huge amounts of water and fine sediment.
7 of 12
tides affect the at which the waves _____. at high tide they break ______ up the shore.
break
higher
8 of 12
the area of land between maximum high tide and minimum low tide is where?
landforms are created and destroyed
9 of 12
the average tidal range influences what?
coastal landforms
10 of 12
features like mudflats and salt marshes dominate low land coats with ?
high tidal ranges(over 4m )
11 of 12
in contrast on coastline with ______ tidal ranges (_m or less) wave action dominates, favouring the _________ of beaches, ________ bars and _______ islands
narrow
2m or less
formation
offshore
barrier
12 of 12

Other cards in this set

Card 2

Front

what are tides casued by?

Back

the gravitational pull of the sun and moon. the moon has 2x the effect of the sun.

Card 3

Front

the formation of tides

Back

Preview of the front of card 3

Card 4

Front

twice a month when the moon, sun and earth are aligned the tidal force is the what? this produces a what tide? and the _______ monthly tidal ranges

Back

Preview of the front of card 4

Card 5

Front

the lowest tidal ranges are called what ? when the sun and moon in relation to the moon are positioned at what to each other?

Back

Preview of the front of card 5
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