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geog coasts
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Cards (48)
what does coral get from algae?
oxygen
what does algae get from coral?
sunlight
which part of coral resembles sacs?
polyps
bodies
what part of polyps sting predators?
mouth
purpose of polyps
mouths
?
stinging
predators
what are polyps
tentacles
for?
feeding
at night
why must water be
clear
for coral?
sediment
or
objects
block from
sunlight
best temp water for corals?
20 - 32
what temperature can corals survive
90
how deep down do corals thrive
5
-
10
m
how do coral create an
exoskeleton
limestone
calcium
carbonate
why arent coral found near river
mouths
need
saltwater
what type of
water
do corals thrive in
saltwater
what relationship do
corals
and
algae
have
symbiotic
can you regenerate coral
reefs
no
problems with coral reef
divers
break
, speedboats
churn
, fishermen
poison
, coral
bleaching
benefits
of coral
tourism
and
fishing
are good for the
economy
purpose of mangrove swamps?
protect coastlines in storms, shelter endangered species, filter water to prevent pollution
do mangrove swamps need competition
no
what type of water for mangrove swamps
sub / tropical
can mangrove swamps thrive in deep waters
no, coastlines only
minimum temp for mangrove swamps
19
do mangrove swamps need clean or muddy water
muddy
why do mangrove swamps need muddy waters
grow
through
roots
how are cliffs formed
erosion
what type of rock creates steep cliffs?
resistant
hard
rock
what type of rock creates gentle sloping cliffs
unresistant soft
rock
name 4 types of beaches
mud
shingle
pebble
sand
cross section of a beach?
profile
is sediment smaller or larger down the beach?
smaller
is sediment smaller or larger up the beach?
larger
what occurs behind a spit
salt marsh
what happens when wind direction changes at a spit
hook
what lives in saltmarshes
endangered
protected
animals
whats a tombolo
spit
connects an
island
and
mainland
3 things affecting waves strength
wind
strength, how long
wind
has been blowing,
distance
/fetch wave is
travelling
which waves are more powerful
destructive
which waves are less powerful
constructive
which waves cause deposition
constructive
which waves cause erosion
destructive
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