Geophysical Fluid Dynamics MCQs with Answers

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Geophysical Fluid Dynamics Online Quiz

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• Test Name: Geophysical Fluid Dynamics MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

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Geophysical Fluid Dynamics

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1 / 40

Sea breezes are caused by:

c. Global atmospheric circulation

a. Differential heating of land and sea

b. Coriolis effect

2 / 40

Upwelling zones in the ocean are characterized by:

b. Warm surface waters

c. Low biological productivity

a. Nutrient-rich waters

3 / 40

Oceanic upwelling is primarily driven by:

b. Density differences

c. Coriolis effect

a. Ekman transport

4 / 40

Which ocean current affects the climate of the eastern coast of Asia?

c. Agulhas Current

a. Kuroshio Current

b. California Current

5 / 40

Thunderstorms are primarily caused by:

c. Radiation

a. Convection

b. Advection

6 / 40

The Antarctic Circumpolar Current is primarily driven by:

a. Westerly winds

b. Trade winds

c. Polar easterlies

7 / 40

A strong, rotating low-pressure center is characteristic of a:

a. Hurricane

b. Tornado

c. Squall line

8 / 40

The Hadley cell describes atmospheric circulation patterns near the:

b. Polar regions

c. Mid-latitudes

a. Equator

9 / 40

Atmospheric pressure, Coriolis effect, and ______ influence ocean circulation.

b. Wind direction

c. Temperature gradient

a. Salinity gradient

10 / 40

The Beaufort scale measures:

c. Earthquake intensity

a. Wind speed

b. Ocean wave height

11 / 40

What does the Rossby number represent?

c. Ratio of rotational to Coriolis forces

b. Ratio of gravitational to inertial forces

a. Ratio of inertial to Coriolis forces

12 / 40

The Gulf Stream is primarily caused by:

a. Temperature differences between the Gulf of Mexico and the North Atlantic Ocean

b. Coriolis effect

c. Seafloor topography

13 / 40

The depth of the thermocline in the ocean is primarily determined by:

c. Density gradient

a. Temperature gradient

b. Salinity gradient

14 / 40

Oceanic gyres are formed due to:

b. Atmospheric convection

c. Seafloor spreading

a. Coriolis effect

15 / 40

Gravitational forces propagate which type of waves in the ocean?

a. Surface waves

c. Tsunamis

b. Internal waves

16 / 40

The Coriolis effect is caused by:

b. Atmospheric pressure

c. Ocean currents

a. Earth's rotation

17 / 40

The geostrophic wind balances:

c. Gravity and centrifugal force

b. Friction and Coriolis force

a. Pressure gradient force and Coriolis force

18 / 40

Thunderstorms are associated with which type of cloud?

b. Cirrostratus

a. Cumulonimbus

c. Altostratus

19 / 40

What percentage of Earth's surface is covered by oceans?

a. 71%

c. 90%

b. 50%

20 / 40

The depth of the thermocline in the ocean is primarily influenced by:

b. Salinity

a. Temperature

c. Pressure

21 / 40

In geophysical fluid dynamics, 'buoyancy' refers to:

a. Ability of a fluid parcel to rise or fall

b. Force exerted by ocean tides

c. Measurement of air pressure

22 / 40

A rotating body of water with a calm central area is called:

b. Gyre

a. Eddy

c. Upwelling

23 / 40

Trade winds near the equator are caused by:

c. Interaction between land and sea breezes

b. Presence of high-pressure systems

a. Differential heating of Earth's surface

24 / 40

El Niño is associated with the periodic warming of surface waters in the:

b. Western Pacific Ocean

c. Indian Ocean

a. Eastern Pacific Ocean

25 / 40

Which atmospheric phenomenon is characterized by a rapid decrease in air pressure and inward spiraling winds?

b. Anticyclone

a. Cyclone

c. Tornado

26 / 40

_______ is NOT a type of atmospheric circulation cell.

a. Polar cell

c. Meridional cell

b. Equatorial cell

27 / 40

Ekman transport in the ocean is primarily driven by:

c. Coriolis force

a. Wind stress

b. Gravitational force

28 / 40

The Ekman spiral describes:

a. Vertical structure of wind-driven ocean currents

b. Horizontal structure of atmospheric circulation

c. Horizontal structure of wind-driven ocean currents

29 / 40

El Niño refers to:

b. Sudden increase in atmospheric pressure

c. Cooling of ocean surface waters

a. Climate phenomenon characterized by warm ocean temperatures

30 / 40

Which layer of the atmosphere contains the ozone layer?

b. Mesosphere

c. Troposphere

a. Stratosphere

31 / 40

The direction of ocean currents is primarily influenced by:

b. Tidal forces

a. Earth's rotation

c. Atmospheric pressure

32 / 40

Weather phenomena primarily occur in the:

c. Mesosphere

b. Stratosphere

a. Troposphere

33 / 40

_______ determines whether a flow is laminar or turbulent.

b. Rossby number

a. Reynolds number

c. Ekman number

34 / 40

__________ is NOT a fundamental equation of geophysical fluid dynamics.

a. Navier-Stokes equation

c. Continuity equation

b. Bernoulli's equation

35 / 40

Ocean current speed and direction are influenced by:

c. Earth's magnetic field

a. Wind

b. Temperature

36 / 40

Thermohaline circulation is primarily driven by differences in:

b. Coriolis effect

a. Water temperature and salinity

c. Solar radiation

37 / 40

The Gulf Stream is an example of a:

c. Equatorial current

b. Eastern boundary current

a. Western boundary current

38 / 40

The Walker circulation is associated with:

a. Equatorial regions

b. Polar regions

c. Mid-latitudes

39 / 40

Oceanic circulation is primarily driven by:

b. Tides

a. Wind

c. Earth's rotation

40 / 40

Ocean currents' speed is primarily influenced by:

a. Wind

b. Temperature gradient

c. Salinity gradient

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