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 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.

Plankton absorbing atmospheric carbon dioxide through photosynthesis.

Decomposition of marine animals on the seafloor releasing stored carbon.

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?

Light Detection and Ranging (LiDAR)

Subduction Zone Imaging

Sound Navigation and Ranging (SONAR)

Satellite Altimetry

None

The daily rise and fall of sea levels, known as tides, are primarily caused by the gravitational pull of which celestial body?

The Moon, because of its close proximity to Earth.

The Sun, because of its immense mass.

Both the Sun and Moon equally.

The Earth’s own rotation on its axis.

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 catches everything in its path and destroys the seabed habitat.

It specifically targets only large, endangered predator fish.

None

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

Surface winds pushing warmer surface water away from a coastline.

Gravitational pull from the moon causing deep water to rise.

The Coriolis effect forcing deep ocean currents towards the surface.

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

None

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

Subduction zone

Photosynthesis zone

Thermocline

Abyssal zone

None

What is a defining characteristic of diadromous fish like salmon?

They migrate between saltwater and freshwater environments.

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

They live and feed near the bottom of the sea.

They lack a backbone and have a soft body.

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?

Southern Ocean

Arctic Ocean

Atlantic Ocean

Pacific Ocean

None

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

Thick layers of sediment accumulating over millions of years.

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

Magma rising from the mantle as two plates move apart.

The horizontal sliding of two plates against each other.

None

10.

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

Low precipitation over the ocean

High rates of evaporation

Melting of glaciers and icebergs

Formation of sea ice

None

1 out of 10