In flocabulary The liquid mantle is constantly churning in movements called convection currents. Convection is a method of heat transfer in which hot liquid rises and cooler liquid sinks in a continuous cycle. The large pieces of Earth’s crust are always moving above the mantle. People cannot feel these movements because they are very slow. They move at about the speed that fingernails grow, or a couple of inches per year. Over long periods of time, convection currents create cracks in the Earth’s tectonic plates. These cracks are called faults. witch one is correct
A it is solid and does not move
B It moves quickly and unpredictably.
C It moves in very slow currents
D It can suddenly cause huge fault lines

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Explanation:

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nec chapter 5 contains

c. information on special occupancy areas

nec chapter 6 covers

a. special equipment

which of the following rules contain the words shall or shall not and must be adhered to?

b. mandatory rules

which of the following rules identify actions that are allowed but not required and typically cover options or alternative methods?

c. optional rules

which of the following serves as the introduction to the nec and provides an overview of the book?

a. nec article 90

organizations that test products for safety are

c. nrtls

the nec is published by the

a national fire protection association

the nec is divided into

b. 9 chapters

the nec provides informative annexes for

c. informational materials and examples

two terms from nec article 100 that trainees should become familiar with are

b. labeled and listed

explanation: