Using the surface analysis in illustration...

Question 1 / 2707066636ee928f7522a1c51a55a

Question 1 of 2707066636ee928f7522a1c51a55a

Using the surface analysis in illustration D049NG below, what wind speed is reported in position C?

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Question 1 of 27070

Q

Using the surface analysis in illustration D049NG below, what wind speed is reported in position C?

If the question has a related picture, it will appear here.

🔍 Key Concepts

• Decode the wind barb symbols used on surface analysis charts • Remember that each full barb and half barb represents a specific wind speed in knots • Wind speed is read from the number and type of barbs, not from isobars or pressure values

💭 Think About

• Look closely at the station model at position C and count exactly how many barbs are on the wind arrow and whether any are half-length • Recall the standard knot values assigned to a full barb, a half barb, and a pennant, then total them for position C • Compare your calculated wind speed with the multiple‑choice options and decide which one matches

✅ Before You Answer

• Be sure you are reading only the wind barb at C, not A, B, D, or E • Confirm you know the standard coding: full barb = ? knots, half barb = ? knots, pennant (triangle) = ? knots • Double‑check that you’re not confusing wind direction (where the arrow points) with wind speed (number/type of barbs)

Question 1 of 27070

Q

Using the surface analysis in illustration D049NG below, what wind speed is reported in position C?

A

3 knots

B

10 knots

C

20 knots

D

30 knots

Question 1 / 2707066636ee928f7522a1c51a55a

Question 1 of 2707066636ee928f7522a1c51a55a

Using the surface analysis in illustration D049NG below, what wind speed is reported in position C?

Back

Question 1 of 27070

Q

Using the surface analysis in illustration D049NG below, what wind speed is reported in position C?

If the question has a related picture, it will appear here.

🔍 Key Concepts

• Decode the wind barb symbols used on surface analysis charts • Remember that each full barb and half barb represents a specific wind speed in knots • Wind speed is read from the number and type of barbs, not from isobars or pressure values

💭 Think About

• Look closely at the station model at position C and count exactly how many barbs are on the wind arrow and whether any are half-length • Recall the standard knot values assigned to a full barb, a half barb, and a pennant, then total them for position C • Compare your calculated wind speed with the multiple‑choice options and decide which one matches

✅ Before You Answer

• Be sure you are reading only the wind barb at C, not A, B, D, or E • Confirm you know the standard coding: full barb = ? knots, half barb = ? knots, pennant (triangle) = ? knots • Double‑check that you’re not confusing wind direction (where the arrow points) with wind speed (number/type of barbs)