T/G Layout 1

242

Authors:

John Entwistle, Damascus High School, Damascus Maryland

Carolyn Ossont, DuVal High School, Lanham, Maryland

Hans Steffen, DuVal High School, Lanham, Maryland

John Webber, Aberdeen High School, Aberdeen, Maryland

Grade Level: 9

Objectives:

Students will be able to:

1. Identify the features, patterns, and stages of a thunderstorm; and


2. Explain how the thundercloud evolves.

Relevant Disciplines:

Earth science, meteorology, computer science

Time Requirement:

Two to three periods

Image Format:

APT, visible and infrared

Prerequisite Skills:

1. Knowledge of how clouds form


2. Ability to analyze satellite images

Materials:

1. APT images (visible and infrared pairs preferable, one per group) with a particular
   cloud type circled for identification


2. Thunderstorm reference sheet


3. Data sheet


4. Cloud fact cards, cut apart (pages 246–248)


5. Teacher-provided reference materials about clouds and satellite imagery


6. (page 245) for each cooperative learning group

Preparation:

The teacher should spend at least one period preparing the class for this activity.

During this preparation time, discuss with the class why and how clouds form. Once

students understand the dynamics of cloud formation, go into specific detail concern-

ing the evolution of a thunderstorm—from cumulus cloud through dissipation stage.

Note that this activity describes thunderstorms. The development of multi-

and super-cell thunderstorms won’t match what is described here.

Reference:

Ahrens, Donald C.

UN D E R S TA N D I N G A TH U N D E R S T O R M-

DE V E L O P M E N T TH R O U G H EX P I R AT I O N