Deep-ocean circulation currents are described as ____________ circulation.

____________is the cause of Coriolis Effect.

• The Coriolis effect affects the wind by deflecting its path to the right in the Northern hemisphere and the left in the Southern hemisphere.

The boundary between the land and the sea can be defined by the term ___________.

___________________ is not a major oceanic gyre.

The ‘West Wind Drift’ belongs to___________.

• Antarctic Circumpolar Current or West Wind Drift is the largest and most important ocean current in the southern hemisphere.

Other than wind, ______________is the most important factor that affects the movement of ocean water at the surface.

• Ocean currents are the continuous, predictable, directional movement of seawater driven by gravity, wind , Coriolis Effect and water density. 
• The Coriolis effect is strongest near the poles and is absent at the equator.

The Westerlies are__________.

• Westerlies are the Permanent winds that blow in the middle latitudes.
• The winds that change their direction with onsets of different seasons are called seasonal winds.
• Variable winds are those winds which blow in a small area and are related to the pressure systems.
• Mesoscale winds are better known as local winds or regional winds. These wind channels extend over long distances around the Earth.

Ocean currents can be triggered by ______________.

• Ocean currents can be caused by wind, density differences in water masses caused by temperature and salinity variations, gravity, and events such as earthquakes or storms.

Ocean currents have_____________.

• By moving heat from the equator toward the poles, ocean currents play an important role in controlling the climate.

______ is defined as a movement of ocean water with a usual pattern.

Horizontal movement of ocean water due to wind on the surface of ocean is called

What is the effect of altitude on temperature? 

• Air at higher altitude is under less pressure than air at lower altitude because there is less weight of air above it.
• So it expands and cools.

________is the strongest evidence for climate change. 

The given image shows______________. 

_________is the Earth's slow vibration as it spins on its axis. 

• Eccentricity measures how much the shape of Earth's orbit departs from a perfect circle.
• The angle of Earth's axis of rotation is tilted as it travels around the Sun is known as obliquity.

_________explains the angle of tilt of the Earth's axis of rotation.