Geophysical Fluid Dynamics Quiz 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

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

a. Eddy

b. Gyre

c. Upwelling

2 / 40

Oceanic circulation is primarily driven by:

c. Earth's rotation

b. Tides

a. Wind

3 / 40

Ocean currents' speed is primarily influenced by:

a. Wind

b. Temperature gradient

c. Salinity gradient

4 / 40

In geophysical fluid dynamics, 'buoyancy' refers to:

a. Ability of a fluid parcel to rise or fall

c. Measurement of air pressure

b. Force exerted by ocean tides

5 / 40

Thunderstorms are primarily caused by:

b. Advection

a. Convection

c. Radiation

6 / 40

_______ determines whether a flow is laminar or turbulent.

c. Ekman number

a. Reynolds number

b. Rossby number

7 / 40

Sea breezes are caused by:

c. Global atmospheric circulation

b. Coriolis effect

a. Differential heating of land and sea

8 / 40

Ekman transport in the ocean is primarily driven by:

b. Gravitational force

a. Wind stress

c. Coriolis force

9 / 40

The Beaufort scale measures:

c. Earthquake intensity

b. Ocean wave height

a. Wind speed

10 / 40

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

c. Density gradient

a. Temperature gradient

b. Salinity gradient

11 / 40

The Gulf Stream is an example of a:

a. Western boundary current

c. Equatorial current

b. Eastern boundary current

12 / 40

El Niño refers to:

c. Cooling of ocean surface waters

b. Sudden increase in atmospheric pressure

a. Climate phenomenon characterized by warm ocean temperatures

13 / 40

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

a. Cyclone

b. Anticyclone

c. Tornado

14 / 40

The geostrophic wind balances:

b. Friction and Coriolis force

c. Gravity and centrifugal force

a. Pressure gradient force and Coriolis force

15 / 40

The Walker circulation is associated with:

a. Equatorial regions

c. Mid-latitudes

b. Polar regions

16 / 40

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

a. Eastern Pacific Ocean

b. Western Pacific Ocean

c. Indian Ocean

17 / 40

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

a. Kuroshio Current

c. Agulhas Current

b. California Current

18 / 40

The Hadley cell describes atmospheric circulation patterns near the:

b. Polar regions

a. Equator

c. Mid-latitudes

19 / 40

The Ekman spiral describes:

a. Vertical structure of wind-driven ocean currents

c. Horizontal structure of wind-driven ocean currents

b. Horizontal structure of atmospheric circulation

20 / 40

Gravitational forces propagate which type of waves in the ocean?

c. Tsunamis

b. Internal waves

a. Surface waves

21 / 40

Weather phenomena primarily occur in the:

a. Troposphere

c. Mesosphere

b. Stratosphere

22 / 40

Thunderstorms are associated with which type of cloud?

b. Cirrostratus

c. Altostratus

a. Cumulonimbus

23 / 40

Thermohaline circulation is primarily driven by differences in:

c. Solar radiation

b. Coriolis effect

a. Water temperature and salinity

24 / 40

The direction of ocean currents is primarily influenced by:

a. Earth's rotation

c. Atmospheric pressure

b. Tidal forces

25 / 40

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

a. Salinity gradient

c. Temperature gradient

b. Wind direction

26 / 40

Oceanic gyres are formed due to:

c. Seafloor spreading

b. Atmospheric convection

a. Coriolis effect

27 / 40

Upwelling zones in the ocean are characterized by:

b. Warm surface waters

c. Low biological productivity

a. Nutrient-rich waters

28 / 40

Ocean current speed and direction are influenced by:

c. Earth's magnetic field

b. Temperature

a. Wind

29 / 40

Trade winds near the equator are caused by:

b. Presence of high-pressure systems

a. Differential heating of Earth's surface

c. Interaction between land and sea breezes

30 / 40

Oceanic upwelling is primarily driven by:

c. Coriolis effect

a. Ekman transport

b. Density differences

31 / 40

__________ is NOT a fundamental equation of geophysical fluid dynamics.

b. Bernoulli's equation

c. Continuity equation

a. Navier-Stokes equation

32 / 40

_______ is NOT a type of atmospheric circulation cell.

c. Meridional cell

a. Polar cell

b. Equatorial cell

33 / 40

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

a. Hurricane

b. Tornado

c. Squall line

34 / 40

Which layer of the atmosphere contains the ozone layer?

c. Troposphere

a. Stratosphere

b. Mesosphere

35 / 40

The Coriolis effect is caused by:

a. Earth's rotation

c. Ocean currents

b. Atmospheric pressure

36 / 40

The Antarctic Circumpolar Current is primarily driven by:

c. Polar easterlies

b. Trade winds

a. Westerly winds

37 / 40

What does the Rossby number represent?

c. Ratio of rotational to Coriolis forces

a. Ratio of inertial to Coriolis forces

b. Ratio of gravitational to inertial forces

38 / 40

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

c. Pressure

b. Salinity

a. Temperature

39 / 40

The Gulf Stream is primarily caused by:

c. Seafloor topography

b. Coriolis effect

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

40 / 40

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

c. 90%

a. 71%

b. 50%

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