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Cement and concrete
Secure a small bag of Portland cement. Have the pupils mix it with water and put it in tin can covers, paper cups, or small pasteboard boxes unless it hardens. Study its appearance and its properties. Break a piece of cement and study it. Mix the dry cement with about twice as much sand or gravel. This will form concrete. After adding water and mixing thoroughly place it in moulds. Permit these to arden various days. Again study the appearance and the characteristics of these samples.
what is inertia?
what is friction?
Objectives After you have completed this exercise, you should be able to: 1. Enlist all the fire extinguishers available in the labs and relate them to the type of fire
a manufacturer of fasteners uses a four die nut former to produce blanks and the piercer punch began to break down using stainless steel bar stock. what change can be made so the m
Objectives After studying this unit, you should be able to: 1. explain the need for reporting lab accidents, 2. state the accident reporting procedure, 3. list the
Explain Genetic Theory of ageing Rate of ageing varies between species. The difference is in the genetic changes in the species. Thus it can be said that gradual impairment of
Objectives After observing the demonstration experiments, you should be able to: 1. State the need for understanding the characteristics of a chemical waste before disposin
Explain the Functions of the Kidney The functions of the kidneys, as you already know, are to form urine and to pass urine for excretion, maintain water and electrolyte balance
what is the plant cells roll?
Describe the history of rock cycle? We will follow the full rock history, or "life-cycle", of a piece of granite in the Sierra Nevada mountains of California. The life cycle of
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