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

The temperature of the ocean varies significantly with depth. What is the term for the transitional layer where temperature changes rapidly?

Thermocline

Subduction zone

Photosynthesis zone

Abyssal zone

None

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

Vasco da Gama

Ibn Battuta

Alfred Wegener

Christopher Columbus

None

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

Surface winds pushing warmer surface water away from a coastline.

The Coriolis effect forcing deep ocean currents towards the surface.

Gravitational pull from the moon causing deep water to rise.

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

None

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

Formation of sea ice

High rates of evaporation

Melting of glaciers and icebergs

Low precipitation over the ocean

None

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

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

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.

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

None

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

Animalia

Fungi

Monera

Protista

None

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

Abyssal boundary

Convergent boundary

Transform boundary

Divergent boundary

None

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

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.

It introduces invasive species into new marine environments.

None

Which of the five main oceans is characterized as being the smallest and is largely covered by sea ice that varies with the seasons?

Pacific Ocean

Southern Ocean

Atlantic Ocean

Arctic Ocean

None

10.

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

Plankton absorbing atmospheric carbon dioxide through photosynthesis.

Carbon dioxide dissolving directly into seawater to form carbonic acid.

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

Decomposition of marine animals on the seafloor releasing stored carbon.

None

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