All Flashcards
Define atmospheric convection cell.
Loops of rising & sinking air driven by temperature differences.
What is the Coriolis Effect?
Apparent deflection of moving objects due to Earth's rotation.
Define Hadley Cell.
Convection cell from 0° to 30° latitude.
Define Ferrel Cell.
Convection cell from 30° to 60° latitude.
Define Polar Cell.
Convection cell from 60° to 90° latitude.
Define Trade Winds.
Winds blowing from 30° latitude toward the equator.
Define high pressure.
Sinking air creating higher pressure at the surface.
Define low pressure.
Rising air creating lower pressure at the surface.
Define atmospheric convection cell.
Loops of rising and sinking air driven by temperature differences.
What is the Coriolis Effect?
Apparent deflection of moving objects due to Earth's rotation.
Define Hadley Cell.
Convection cell from 0° to 30° latitude where warm, moist air rises at the equator and descends as dry air around 30°.
Define Ferrel Cell.
Convection cell from 30° to 60° latitude, driven by Hadley and Polar cells; air rises at 60° and sinks at 30°.
Define Polar Cell.
Convection cell from 60° to 90° latitude where cold, dense air sinks at the poles and warmer air rises around 60°.
Define trade winds.
Winds that blow from the high-pressure zones at 30° latitude toward the equator.
Define high pressure.
Air is sinking, creating higher pressure at the surface.
Define low pressure.
Air is rising, creating lower pressure at the surface.
What is the effect of the Earth's tilt?
Uneven solar heating, causing temperature differences and driving atmospheric circulation.
What is the effect of the Coriolis effect on the Northern Hemisphere?
Deflection of moving objects (like wind) to the right.
What is the effect of the Coriolis effect on the Southern Hemisphere?
Deflection of moving objects (like wind) to the left.
What causes trade winds?
Air moving from high-pressure zones at 30° latitude toward the equator, influenced by the Coriolis effect.