Passive heat absorption refers to
A. using natural materials to gather and hold heat.
B. using water to cool nuclear power plants.
C. the cooling of solar panels used to generate electricity.
Answer: A
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Which is higher in an endothermic reaction: the potential energy of the reactants or the potential energy of the products?
A. In the early stages of the reaction, the potential energy of the reactants is higher. In the later stages, the potential energy of the products is higher. B. The potential energy of the reactants is the same as the potential energy of the products. C. The potential energy of the products is higher than the potential energy of the reactants. D. The potential energy of the reactants is higher than the potential energy of the products.
Most forms of energy can be classified as either
a. chemical or physical b. kinetic or mechanical c. potential or mechanical d. chemical or kinetic e. potential or kinetic
The atmospheric layer in which we live is called the:a
troposphere. b. stratosphere. c. thermosphere. d. ionosphere. e. exosphere.
Which of the following is NOT a major global trade flow?
A) services B) microelectronics C) automobiles D) steel E) oil