Chapter 7 Vocab Flashcards Preview

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Flashcards in Chapter 7 Vocab Deck (13):
1

4 Forces that control the wind?

-Pressure Gradient Force
-Gravitational Force
-Frictional Force
-Coriolis Force

2

Unit Area?

Area with a dimension of one unit, such as one square meter.

3

Pressure Gradient

The rate at which pressure changes with distance

4

What are Turbulent Eddies?

Turbulent motions leading to mixing of air

5

What are the three turbulent Eddies?

-Mechanical Turbulence
-Thermal Turbulence
-Shear-Induced Turbulence

6

Mechanical Turbulence?

Develops when air encounters obstructions associated with ground roughness.

7

Thermal Turbulence?

Develops when the air near the earths surface is heated sufficiently during the day that it becomes unstable and rises to higher altitudes.

8

Wind Shear

Exists when winds change over distance. Either increasing, or decreasing.

9

Shear-induced Turbulence

Occurs when wind speed changes rapidly with distance, typically with height.

10

Boundary Layer?

Atmospheric layer in which friction is an important force.

11

Angular Momentum

When something is spinning.

12

Hydrostatic Balance

When the upward pressure gradient force is exactly balances with gravity.

13

Geostrophic Balance

Balance between the pressure gradient force and the Coriolis force.