Below you will find activities to extend this web site into your classroom teaching. Both extension activities were developed by a teacher who experienced a black smoker expedition first-hand.

Meet the Challenge and Design Your
Own Black Smoker Recovery Plan
Simulated Underwater Recovery

MEET THE CHALLENGE AND DESIGN YOUR OWN BLACK "SMOKER" RECOVERY PLAN

Suggested Age Group
Grades 7-12

Goal
To consider the challenges involved in the recovery of a black "smoker", or sulfide chimney, and design a plan.

Objective
After researching, discussing, questioning, and brainstorming, students will design a 3-step plan for recovering a sulfide chimney.

Materials
Paper and pen/pencil
Optional: Online access to Black Smoker Web site bulletin board area.

Activity
Part 1: Research
Students read and familiarize themselves with the Black Smoker Expedition Web site. They may do this online or teacher can preprint the Web pages (http://www.amnhonline.org/expeditions/blacksmokers).

Part 2: Discuss
Facilitate a class discussion OR break into groups and have students research the following specific questions, then present their answers to the rest of the class.
What are the challenges that the engineering team must consider in attempting to recover a black "smoker"?
How can the weather affect a research expedition?
Predict what the Mothra chimneys will look like this summer (sketch them).
How would pressure at the recovery site affect a Styrofoam cup? Your body?
At what temperature does water boil at your lab station? How does this compare to temperatures at the site of an active sulfide chimney?
Why would there be a size limit on the sulfide chimney to be recovered?
How would engineers determine what the maximum size and weight of the recovered sulfide chimney should be?

Part 3: Design a Plan for Recovery
Having considered the conditions and challenges of deep-sea retrieval of a black "smoker", have the students design a plan for recovery, either individually or in small groups. Including at least 3 sequential steps, students should draw a series of events to show their recovery idea (as in a cartoon strip or the steps of a recipe). Students should also write captions to explain each step, label the parts of the drawing, and title the plan.

Part 4: Optional Online Sharing
Students post their final plan for black "smoker" retrieval on the bulletin board area of the Black Smoker Web site. This electronic board will allow students to share their ideas with students around the country and people around the world.



Which tool would
you use?




















SIMULATED UNDERWATER RECOVERY

Suggested Age Group
Grades 7-12

Goal
To apply science knowledge and skills to solve a problem by simulating the challenge of underwater recovery.

Objective
Students will work as a team to recover a model of a sulfide chimney from a classroom aquarium.

Materials
Aquarium or bucket of water
Salt to simulate ocean water
Elmer's glue
Sugar cubes (about 6 cubes per team per model, 1-32 oz. box per class)
Broken spaghetti pieces
Optional: REVEL video
(http://www.ocean.washington.edu/outreach/revel)

Activity
Make a model of a sulfide structure for each team by gluing sugar cubes in a pyramid structure (dissolving sugar will simulate the time limits involved). Glue broken pieces of spaghetti on top to represent tube worms. Let models dry overnight or at least an hour. Each team designs a plan for recovery of their model (play REVEL video in background). Teams experiment by placing their model in the saltwater-filled aquarium and retrieving it. Each team then reports the process that they used and evaluates the plan's success by taking into account the quantity and quality (amount of chimney/tube worm damage) of the recovered sample. Teams experiment again the next day with a revised plan.

Optional
Students may create their own sulfide chimneys (using sponges, rocks), glue them to the bottom of the aquarium, then figure out ways to detach and retrieve them. To simulate an active black "smoker", use boiling water.




How would you snare
a "Smoker"?



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