Science 1120: Physical Science II: Global Winds Lab Name 1.________________

Name 2.________________

Name 3.________________

Name 4.________________

Part 1: Winds simulation Name 5.________________

Open the WINDS program on the computer. This program simulates wind patterns around high and low pressure systems.

Click on the H and L Pressures button and change the strength to STRONG.

What is the direction and relative strength around the:

High Pressure? Low Pressure?

What type of weather is associated with a:

High Pressure? Low Pressure?

Place a balloon at Bemidji and follow the track. Sketch the track on the map below.

Erase the balloon track. Place a second High pressure system on Minneapolis by dragging another H.

Place a balloon at Bemidji once again and sketch the track on the map below

Next Click on the EARTH SPIN icon and change the rotation to STOPPED. Describe the movement of air around the high and low pressure systems if the Earth did not spin.

Place a balloon at Bemidji and follow the track. Sketch the track on the previous map above.

Part 2: Global wind patterns using actual satellite images.

Click on the movie COLL.MPG. This is a video of global wind patterns for a two-week period. PLAY the movie and observe the patterns of the cloud motion.

Sketch the wind patterns on the figure below.

Next click on the file Ncsat_anim.GIF. What type of system is predominate and describe the weather associated with this system? Sketch the track of the pattern on the figure below

For the final part of the lab we will track a low pressure system that started in southern Colorado and a high pressure in North Carolina. Click on each map in order and mark on the map below the location of both the Low (L) and High (H). Estimate how fast in mph the low pressure is traveling.

Surface maps for January 28 -29, 2006

Map1 Map2 Map3 Map4 Map5 Map6 Map7