AICE Marine Science AS Level Exam Review Questions and Answers
with Verified Solutions | Latest 2026 Update
Q: how does sedimentation reduce coral growth?
Answer:
-sedimentation/silt covers coral reduces light penetration inhibits/reduces
photosynthesis reduced photosynthesis reduces coral growth
Q: what happens to corals if seawater becomes acidic?
Answer:
-too much carbon dioxide leads to acidic water-causes coral skeletons to dissolve
coral bleaching-high water temp. kills zooxanthellae-coral bleaches-coral dies
,AICE Marine Science AS Level Exam Review Questions and Answers
with Verified Solutions | Latest 2026 Update
Q: artificial reefs
Answer:
a. common materials used: concrete and steel. very important that the
material is non-toxi. so it does not harm marines organism because toxic material
will dissolve
in water nor enter the food chain
b. benefits: boosts economy by attracting tourists for: fishing, snorkeling/diving,
more
tourists=more local spending
provides suitable substrate for coral attachment; promoting higher biodiversity
protect shores
Q: plate tectonic theory
Answer:
do not confuse with continental drift. cont drift was in 1912 and plate
ted was in the 1960s. cont drift-continents drift over ocean floor. plate ted-crust
broken into
plates which float on the underlying layer
,AICE Marine Science AS Level Exam Review Questions and Answers
with Verified Solutions | Latest 2026 Update
Q: describing plate tectonic theory
Answer:
-earth's crust/lithosphere is made of plates
continents lie on plates
plates are float/moving slowly on top of asthenosphere
plates meet at boundaries; convergent, divergent, and volcanic eruptions
plates move due to convection currents in the asthenosphere
plate movement causes earthquake, mountain building, and volcanic eruption
, AICE Marine Science AS Level Exam Review Questions and Answers
with Verified Solutions | Latest 2026 Update
Q: evidence for plate tectonics theory
Answer:
-spatial relationship of current continents
paleontology-related fossils on continents separated by ocean-shows they were once
joined
mountain ranges- stratification/layering of mountain range match that are found on
different
continents indicating continents were once joined
magnetic reversal of rocks-seen at mid-ocean ridges
1. at mid-ocean ridge, which is a divergent boundary magma is cooling forming new
crust
2. molten lava has no magnetism but as cooling acquires magnetic orientation of the
earth's
polarity at the time
3. rocks show magnetic orientation is symmetrical to both side of ridge
4. rocks further from the ridge are older than rocks closer to the ridge
seafloor spreading- measuring moving divergent plates at mid-ocean ridges
sonar- mapping of the seafloor
with Verified Solutions | Latest 2026 Update
Q: how does sedimentation reduce coral growth?
Answer:
-sedimentation/silt covers coral reduces light penetration inhibits/reduces
photosynthesis reduced photosynthesis reduces coral growth
Q: what happens to corals if seawater becomes acidic?
Answer:
-too much carbon dioxide leads to acidic water-causes coral skeletons to dissolve
coral bleaching-high water temp. kills zooxanthellae-coral bleaches-coral dies
,AICE Marine Science AS Level Exam Review Questions and Answers
with Verified Solutions | Latest 2026 Update
Q: artificial reefs
Answer:
a. common materials used: concrete and steel. very important that the
material is non-toxi. so it does not harm marines organism because toxic material
will dissolve
in water nor enter the food chain
b. benefits: boosts economy by attracting tourists for: fishing, snorkeling/diving,
more
tourists=more local spending
provides suitable substrate for coral attachment; promoting higher biodiversity
protect shores
Q: plate tectonic theory
Answer:
do not confuse with continental drift. cont drift was in 1912 and plate
ted was in the 1960s. cont drift-continents drift over ocean floor. plate ted-crust
broken into
plates which float on the underlying layer
,AICE Marine Science AS Level Exam Review Questions and Answers
with Verified Solutions | Latest 2026 Update
Q: describing plate tectonic theory
Answer:
-earth's crust/lithosphere is made of plates
continents lie on plates
plates are float/moving slowly on top of asthenosphere
plates meet at boundaries; convergent, divergent, and volcanic eruptions
plates move due to convection currents in the asthenosphere
plate movement causes earthquake, mountain building, and volcanic eruption
, AICE Marine Science AS Level Exam Review Questions and Answers
with Verified Solutions | Latest 2026 Update
Q: evidence for plate tectonics theory
Answer:
-spatial relationship of current continents
paleontology-related fossils on continents separated by ocean-shows they were once
joined
mountain ranges- stratification/layering of mountain range match that are found on
different
continents indicating continents were once joined
magnetic reversal of rocks-seen at mid-ocean ridges
1. at mid-ocean ridge, which is a divergent boundary magma is cooling forming new
crust
2. molten lava has no magnetism but as cooling acquires magnetic orientation of the
earth's
polarity at the time
3. rocks show magnetic orientation is symmetrical to both side of ridge
4. rocks further from the ridge are older than rocks closer to the ridge
seafloor spreading- measuring moving divergent plates at mid-ocean ridges
sonar- mapping of the seafloor
