. Which two forces are equal and opposite in hydrostatic balance? a. Pressure gr
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Question
. Which two forces are equal and opposite in hydrostatic balance? a. Pressure gradient force and gravity b. Pressure gradient force and Coriolis force c. Coriolis force and friction d. Gravity and Coriolis force 2. You are looking at a surface weather map and the isobars are curved. What assumption can you make about the atmosphere depicted in the weather map? a. b. c. You can assume the atmosphere is in geostrophic balance. You can assume the atmosphere is in gradient wind balance. You can assume the horizontal forces on the atmosphere are the pressure gradient force, Coriolis force and friction force PGF . Assume the air parcel above is located in the Northern Hemisphere. What is the wind direction of the geostrophic wind? a. Northerly b. Easterly c. SoutherlyExplanation / Answer
1. PRESSURE GRADIENT AND GRAVITY (A)
EXPLANATION: In the case of atmosphere pressure gradient force and gravitational force makes the hydrostatic equilibrium/balance.
2. You can assume the horizontal forces on the atmosphere are the pressure gradient force. Coriolis force and friction force. (C)
EXPLANATION: Whenever isobars are curved in surface weather map definetely we can say it is not is geostraphic or gradient wind balance
3.Easterly (b)
Explanation: When pressuer gradient force is acting in a small portion of air in notrhern hemisphere the geostrophic wind direction is towards Easterly
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