Kuiz Sains Tambahan Tingkatan 5 Bab 8 Set 1

SELAMAT DATANG Kuiz Sains Tambahan Tingkatan 5 Bab 8 Set 1

Oseanografik (English)

KUIZ INI MENGANDUNGI 10 SOALAN

What distinguishes a 'seamount' from other features of the ocean floor?

It is a flat, deep area of the ocean floor covered in sediment.

It is a continuous underwater mountain range where new crust is formed.

It is an underwater mountain formed by volcanic activity.

It is a long, narrow depression that marks the deepest parts of the ocean.

None

A mid-ocean ridge is formed by which specific geological process?

Magma rising from the mantle as two plates move apart.

The collision of two oceanic plates, with one bending downward.

Thick layers of sediment accumulating over millions of years.

The horizontal sliding of two plates against each other.

None

Which type of tectonic plate boundary is primarily responsible for the formation of deep ocean trenches like the Mariana Trench?

Abyssal boundary

Transform boundary

Convergent boundary

Divergent boundary

None

What is the primary mechanism behind the phenomenon of 'upwelling'

The Coriolis effect forcing deep ocean currents towards the surface.

Surface winds pushing warmer surface water away from a coastline.

Gravitational pull from the moon causing deep water to rise.

Volcanic activity heating the seabed and causing water to circulate upwards.

None

Coral reefs require clear water to thrive. What is the primary reason for this requirement?

Sunlight needs to penetrate the water for the symbiotic algae (zooxanthellae) to perform photosynthesis.

Clear water has a higher dissolved oxygen content necessary for coral respiration.

Predatory fish are less able to hunt in clear water, protecting the reef’s inhabitants.

Sediment in murky water can physically smother and kill the coral polyps.

None

Overfishing is a significant issue threatening marine ecosystems. According to the text, why is the practice of bottom trawling particularly destructive?

It introduces invasive species into new marine environments.

It causes chemical pollution from the large fishing vessels.

It specifically targets only large, endangered predator fish.

It catches everything in its path and destroys the seabed habitat.

None

The ocean acts as a 'carbon sink' through a biological process. What is the key first step in this process?

Deep ocean currents physically pulling carbon dioxide down from the surface.

Decomposition of marine animals on the seafloor releasing stored carbon.

Plankton absorbing atmospheric carbon dioxide through photosynthesis.

Carbon dioxide dissolving directly into seawater to form carbonic acid.

None

Which ocean floor mapping technique uses pulses of light, often from an aircraft, to measure the depth of shallower coastal waters?

Subduction Zone Imaging

Light Detection and Ranging (LiDAR)

Satellite Altimetry

Sound Navigation and Ranging (SONAR)

None

Which early explorer is credited with finding a sea route from Europe to India by sailing around Africa?

Alfred Wegener

Ibn Battuta

Vasco da Gama

Christopher Columbus

None

10.

Organisms like phytoplankton, which are primary producers in the ocean, belong to which kingdom?

Fungi

Monera

Protista

Animalia

None

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