Question

A scientific theory is which of the following?

	An explanation supported by a very large amount of experimental evidence
	An explanation that cannot be modified in light of new experimental evidence

	The same as a hypothesis
	Any testable explanation for a question or problem

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Question 26 pts

(TCO 6) A solution with a pH of 4 is which of the following?

	Extremely acidic
	Moderately acidic

	Slightly basic
	Extremely basic

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Question 36 pts

(TCO 6) The reaction of carbon with oxygen to produce carbon monoxide is an example of which class of reaction?
2C + O₂ → 2 CO

	Endothermic
	Combination

	Catalytic
	Double replacement

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Question 46 pts

(TCO 6) Which of the following statements is the best prediction based on the hypothesis that bird species have decreased in number in a particular wetland because of construction traffic?

	If a wetland area is disturbed by construction vehicles, then the number of bird species will decrease.
	If bird numbers decrease in a wetland, then construction vehicles must have affected the environment.

	If construction vehicles enter a wetland, then new predators will enter the area and reduce the size of bird populations.
	If construction vehicles are in a wetland area, then the environment will be damaged such that it can no longer support most bird species.

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Question 56 pts

(TCO 6) Carbon gives rise to so many different kinds of molecules because it does which of the following?

	It is one of the most abundant element on earth.
	It is able to form bonds with itself and many other elements.

	It is chemically inert.
	It is electrically neutral.

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Question 66 pts

(TCO 6) Wood, coal, oil, and natural gas are forms of _____.

	heat energy
	light energy

	kinetic energy
	potential energy

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Question 76 pts

(TCO 6) What is the term used to describe the maximum number of organisms that can be sustainably removed from an ecosystem?

	Carrying capacity
	Limiting factor

	Maximum sustainable yield
	Total allowable catch

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Question 86 pts

(TCO 6) What is the most significant source of ALL major air pollutants?

	Volcanoes
	Combustion of fuels and wastes

	Sewage treatment plants
	Forest fires

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Question 96 pts

(TCO 6) Compared to rates of change that occur in nature, human-induced changes tend to be _____.

	extremely rapid
	only slightly faster

	slower
	variable with many fluctuations

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Question 106 pts

(TCO 6) Which of the following BEST describes the concept of sustainable development?

	Maximizing the harvest of a resource
	Harvesting a resource at a level that does not jeopardize future harvest

	Meeting human needs today without endangering the needs of future generations
	Using only renewable resources

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Question 116 pts

(TCO 6) The operating principle of a fuel cell is _____.

	an internal combustion process
	a thermochemical process

	a reversal of electrolysis
	a thermal storage process

Answer 1

Answer:

A Scientific theory is an explanation supported by a very large amount of experimental evidence.

(26) A solution with a pH of 4 is which of the following?

Answer: Moderately acidic

(36) The reaction of carbon with oxygen to produce carbon monoxide is an example of which class of reaction?
2C + O₂ → 2 CO

Answer: Combination.

(46) Which of the following statements is the best prediction based on the hypothesis that bird species have decreased in number in a particular wetland because of construction traffic?

Answer: If construction vehicles are in a wetland area, then the environment will be damaged such that it can no longer support most bird species.

(56) Carbon gives rise to so many different kinds of molecules because it does which of the following?

Answer: It is able to form bonds with itself and many other elements.

(66) Wood, coal, oil, and natural gas are forms of -------

Answer: Heat energy.