1.  What causes weather?

2. 1. Anticipatory Set o Bellringer o Objective 2. Input (Notes on Fronts) 3. Guided Practice – Front ID Game 4. Independent Practice – Handout 5. Closing

3.  After today you will be able to define an air mass and front. You will also be able to identify types of fronts.

4.  80% Mastery

6.  An air mass is a large body of air that has similar temperature and moisture throughout

7.  1. What is an air mass?

8.  A front forms when two air masses meet.

9.  Warm air rises because it is less dense.  Cold air sinks because it is more dense.

10.  1. Which kind of air sinks?  2. Why does it sink?

11.  A cold front is when a cold air mass overtakes a warm air mass.

12.  A warm front is when a warm air mass overtakes a cold air mass.

13.  1. What types of air masses are involved in a cold front?  2. What is a warm front?  3. What is the difference between a cold and warm front?

14.  A stationary front is when a cold air mass and a warm air mass meet and both stop moving.

15. An occluded front is when a cold front overtakes a warm front.

16.  1. What is a stationary front?  2. What is an occluded front?

17.  Each group should get 4 boards and one marker.

20.  A warm air mass overtakes a cold air mass.

21.  A cold front overtakes a warm front.

22.  Cold and warm air masses meet and little movement occurs.

23.  A cold air mass moves under the warm air mass, forcing the warm air up.

24.  What do meteorologist call a large body of air that has similar temperatures and moisture throughout it?

25.  What type of air rises?