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.

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

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

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

None

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

Alfred Wegener

Christopher Columbus

Vasco da Gama

Ibn Battuta

None

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

It specifically targets only large, endangered predator fish.

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

It causes chemical pollution from the large fishing vessels.

It introduces invasive species into new marine environments.

None

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

Melting of glaciers and icebergs

Low precipitation over the ocean

High rates of evaporation

Formation of sea ice

None

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

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

It is an underwater mountain formed by volcanic activity.

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.

None

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

Thick layers of sediment accumulating over millions of years.

Magma rising from the mantle as two plates move apart.

The horizontal sliding of two plates against each other.

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

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.

Carbon dioxide dissolving directly into seawater to form carbonic acid.

Decomposition of marine animals on the seafloor releasing stored carbon.

Plankton absorbing atmospheric carbon dioxide through photosynthesis.

None

What is a defining characteristic of diadromous fish like salmon?

They live and feed near the bottom of the sea.

They migrate between saltwater and freshwater environments.

They lack a backbone and have a soft body.

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

None

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

Satellite Altimetry

Light Detection and Ranging (LiDAR)

Sound Navigation and Ranging (SONAR)

Subduction Zone Imaging

None

10.

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

The Earth’s own rotation on its axis.

Both the Sun and Moon equally.

The Moon, because of its close proximity to Earth.

The Sun, because of its immense mass.

None

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