What are coastal margins and why are they important?
Exploring Earth and Its Features

Quiz
•
Geography
•
7th Grade
•
Hard
nooraafzali grandeur
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Coastal margins are primarily urban areas with no ecological significance.
Coastal margins are vital ecosystems that support biodiversity, protect coastlines, and provide resources and recreational spaces.
Coastal margins are only important for shipping and trade routes.
Coastal margins are deserts that lack any biodiversity.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Define the continental shelf and its significance in marine ecosystems.
The continental shelf is the highest point of a continent.
The continental shelf is the submerged border of a continent, significant for its rich marine biodiversity, fisheries support, and role in nutrient cycling.
The continental shelf is a landform found only in tropical regions.
The continental shelf is a type of ocean current.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What occurs at subduction zones and how do they affect the Earth's surface?
Subduction zones create large mountain ranges and reduce seismic activity.
Subduction zones lead to the formation of trenches, volcanoes, and earthquakes, significantly altering the Earth's surface.
Subduction zones primarily lead to the formation of flat plains and stable climates.
Subduction zones are areas where tectonic plates move apart and create ocean ridges.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain the role of magma in volcanic activity.
Magma cools down to form sedimentary rocks.
Magma has no impact on the formation of islands.
Magma is the source of volcanic eruptions and determines their characteristics.
Magma is only present in oceanic trenches.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are island arcs and how do they form?
Island arcs are curved chains of volcanic islands formed at convergent plate boundaries where one oceanic plate subducts beneath another.
Island arcs are created by the erosion of coastal mountains.
Island arcs are straight lines of continental landforms.
Island arcs are formed by the collision of two continental plates.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Describe a shield volcano and its characteristics.
A shield volcano is a type of volcano that erupts only once in its lifetime.
A shield volcano is a broad, gently sloping volcano formed by low-viscosity lava flows, characterized by a wide base and non-explosive eruptions.
A shield volcano is characterized by thick, viscous lava that creates a narrow base.
A shield volcano is a tall, steep-sided volcano formed by explosive eruptions.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Pacific Ring of Fire and why is it notable?
A mountain range in North America famous for its wildlife.
The Pacific Ring of Fire is a region in the Pacific Ocean known for its high volcanic and seismic activity.
An area in the Pacific Ocean with no geological activity.
A region in the Atlantic Ocean known for its calm waters.
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