Select the best answers based on the information contained in the COMET module on gap winds.

• 1. Under typical gap flow conditions, where is low-level air the coolest? Choose the best answer.
  • Over the gap exit
  • Over the gap entrance
  • Over the middle of the gap
• 2. Which direction best characterizes geostrophic flow? Choose the best answer.
  • Parallel to isobars
  • Perpendicular to isobars
• 3. Which of the following best characterizes typical gap flows. Choose the best answer.
  • Geostrophic
  • Non-geostrophic
• 4. Which of the following hazards may be associated with gap winds? Choose all that apply.
  • Flooding
  • Wind shear
  • Freezing rain
  • Cold temperatures
  • High winds
  • Tornadoes
• 5. In the case of long, narrow gaps, where are winds typically strongest? Choose the best answer.
  • The narrowest part of the gap
  • The gap entrance
  • The gap exit
  6. What effect does friction have on gap flow? Choose the best answer.
  • It slows it down.
  • It speeds it up.
  • Almost none
• 7. What effect does adiabatic warming of downslope winds have on the pressure gradient across a gap? Choose the best answer.
  • It increases the gradient. It decreases the gradient.
• 8. With an idealized Venturi effect, where are winds typically strongest? Choose the best answer.
  • The gap exit
  • The narrowest part of the gap
  • The gap entrance
• 9. What reasons commonly account for pressure gradients across gaps? Choose all that apply.
  • The atmosphere is unstable within the gap.
  • There is a synoptic-scale pressure gradient across the gap.
  • The thickness of cold, low-level air differs from one side of the gap to the other.
  • The wind speed accelerates through the gap.
• 10. Doubling the pressure difference across a gap will double the wind speed of the resulting gap wind. Choose the best answer.
• True
• False