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

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

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.

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.

None

Which of the following factors would lead to a decrease in the salinity of ocean water?

Melting of glaciers and icebergs

Formation of sea ice

Low precipitation over the ocean

High rates of evaporation

None

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

Sound Navigation and Ranging (SONAR)

Satellite Altimetry

Subduction Zone Imaging

Light Detection and Ranging (LiDAR)

None

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

Surface winds pushing warmer surface water away from a coastline.

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

Gravitational pull from the moon causing deep water to rise.

The Coriolis effect forcing deep ocean currents towards the surface.

None

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

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

It specifically targets only large, endangered predator fish.

It causes chemical pollution from the large fishing vessels.

It introduces invasive species into new marine environments.

None

What is a defining characteristic of diadromous fish like salmon?

They migrate between saltwater and freshwater environments.

They lack a backbone and have a soft body.

They live and feed near the bottom of the sea.

They are small fish that live near the surface and are prey for larger predators.

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

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

Protista

Fungi

Animalia

Monera

None

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

Transform boundary

Convergent boundary

Divergent boundary

Abyssal boundary

None

10.

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

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