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Secosky, James J.	1

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Did Water Leave Its Mark on Mars?

Peer reviewed

Secosky, James J. – Science Teacher, 1989

Discusses the missing water on Mars. Describes five experiments simulating conditions on Mars: (1) behavior of dry ice; (2) low-pressure vacuum; (3) freezing point depression; (4) water in hydrated minerals and clay; and (5) properties of carbon dioxide. (YP)

Descriptors: Laboratory Experiments, Laboratory Procedures, Physical Sciences, Science Activities

Food for Thought.

Peer reviewed

Murfin, Brian – Science Teacher, 1998

The Inuit subsist on a diet of virtually all meat and fat yet avoid deficiency and heart diseases. Explains this paradox and discusses cultural and geographic influences on diet. The Inuit diet is compared with a typical American diet and the diet recommended by the U.S. Department of Agriculture in a laboratory exercise that measures dietary fat.…

Descriptors: American Indian Studies, Cultural Context, Eating Habits, Eskimos