Please choose the correct answer for the Coriolis force A. The higher the latitude, the larger the Coriolis force B. Coriolis force doesn’t depend on the latitude C. The higher the latitude, the smaller the Coriolis force
The Correct Answer and Explanation is :
The correct answer is A. The higher the latitude, the larger the Coriolis force.
Explanation:
The Coriolis force is an apparent force that arises from the rotation of the Earth. It affects the motion of objects moving across the surface of the Earth, influencing their path. The Coriolis effect is stronger at higher latitudes and weaker at the equator. This phenomenon can be understood through the principles of physics and the geometry of Earth’s rotation.
The Coriolis force is calculated using the formula:
[
F_c = 2 m v \sin(\phi)
]
where:
- ( F_c ) is the Coriolis force,
- ( m ) is the mass of the moving object,
- ( v ) is the velocity of the object, and
- ( \phi ) is the latitude.
In this equation, the sine of the latitude plays a crucial role. As the latitude increases from the equator (0 degrees) to the poles (90 degrees), the value of (\sin(\phi)) increases, meaning that the Coriolis force becomes more significant. This increase in force is due to the fact that the Earth’s surface is rotating faster at the equator compared to higher latitudes.
At the equator, the Coriolis force is effectively zero because the sine of 0 degrees is zero. As one moves towards the poles, the rotational speed of the Earth relative to an object moving on its surface decreases, causing the object to deviate from a straight path due to the Coriolis force.
This is why the Coriolis force significantly influences large-scale motions in the atmosphere and oceans, such as trade winds, cyclones, and ocean currents. In meteorology, this effect is critical in understanding weather patterns, where it causes winds to turn and curve rather than flow in straight lines. Thus, the statement that “the higher the latitude, the larger the Coriolis force” is indeed correct.