1. Fronts and Air Mass Modeling
Make Up Assignment

2. Warm-Up
There are 5 definitions on the first paper of the demo. Draw a model of what is being described in each definition.
Front
Cold Front
Warm Front
Occluded Front
Stationary Front

3. DEMO 1 The first front that was modeled was one that forms when:
A cold or warm front stops moving
The air masses are not powerful enough to move or overpower the other
This front stays stationary for an extended time.
Complete DEMO 1

4. DEMO 2 prediction
We will release the barrier between the red (warm water or “air”) and the blue (cold water or “air”)
In your notebook: Predict what you will see after 5-10 seconds.

5. DEMO 2 – cold and warm fronts
Notice that we are modeling 2 different fronts here (the black line is the marker dividing the two types).
ABOVE THE LINE: warm “air” is replacing cold “air”
BELOW THE LINE:
Cold “air” is replacing warm “air”
In your notebook: Draw the model at ~25 seconds

6. DEMO 2 – complete questions 1-4
Warm front
#2. Draw what is below the black line (both air masses represented. Include arrows to show movement.
#3. Draw what is above the black line (with both air masses represented). Include arrows to show movement.
cold front