|Earth and Space Science||Oceanography 4M3.00||Science In Society||Economics 4.5 c|
Sponsored by the National Science Foundation
CONTENT STANDARDS: Earth and Space Science
CONTENT TOPIC: Oceanography
CONCEPT: Oceans are important to life on earth.
CONTENT OBJECTIVE: 4M3.00 To understand resources provided by the oceans
INSTRUCTIONAL OBJECTIVES: The learner will:
TN COMPONENT OF SCIENCE: Science In Society
BENCHMARK: Resources are generally allocated according to the perceived needs of a society.
Colored sentence strips and markers; paper; pictures featuring resources from the ocean; picture of desalination plant.
Experiment supplies for desalination: candles, matches, beakers (one with small neck), salt water, glass tubing, stoppers, ice.
Let us focus on resources taken from the oceans. (Put different colored sentence strip cards on various parts of the bulletin board - 1. food, 2. minerals, 3. oil, 4. fresh water, 5. energy.) Under these categories, we will list specific resources that come from the ocean. Let us begin with 1. food. Can you think of any foods that come from the ocean? List these on a piece of scrap paper. We will add correct responses under the food category of our bulletin board. Tell me some of things you wrote. (response) Food from the sea is also an important resource. People eat fish and also feed fish to livestock. Seaweed has many uses. Did you know that seaweed is used to increase creaminess when making some types of ice cream, candy, medicines, jellies, and cosmetics? Seaweed is popular in Japan and Wales.
(Point to the 2. minerals category marker on the bulletin board.) Valuable minerals are found in small black rocks on the ocean floor called nodules. (Put a nodules card underneath the minerals bulletin board marker.) Manganese, cobalt, and nickel can be found in nodules. (Show some examples of these if possible.)
(Point to the 3. oil poster marked on the bulletin board. Place a picture of an offshore oil well underneath the word oil.) Natural gas and oil are resources that can be found beneath the ocean floor. Here is a THINK question - When our oil and gas supplies on land are used up, where will we get more?
(Answer: We will need to use the oil and gas under the oceans.)
(Again, point to the bulletin board.) Let's discuss how we can get fresh water from ocean water. In some parts of the world, there is a shortage of fresh water. Fresh water is needed to grow crops. Ocean water can be used if the salt is taken out. (Show a picture of a desalination plant. Put it on the bulletin board also.) Ocean water can be desalinated by heating it until the water evaporates. The evaporated water is then cooled until it becomes a liquid again. The process of desalination of ocean carried out in desalination plants.
(Note to Teacher: If possible, take your class to the Jr. High chemistry lab for this section.)
(A group leader for each group will write down the responses and share them.)
2. Make a list of all the ocean products you can find in the store. Also, look for seaweed ingredients (algin, carrageenan) in such products as ice cream, salad dressing, jelly sauces, toothpaste, soap, creamy candy, cosmetics and medicines.
3. How many products did you find?
4. Do you use any of these regularly?
5. Share your results with the class.
This is the time this file has been accessed since 07/01/97.
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