49.Two or more processes interacting such that the combined effect is greater than the sum of the individual effects is calleda.homeostasisb.a synergistic interaction c.negative feedbackd.entropye.yime delayAnswer: B Level: ModerateScience, Matter, Energy, and Systems30
50.Which of the following must obey the laws of thermodynamics?Level: EasyTrue/False Questions2-1 What Is Science?1.Scientists tend to be highly skeptical of new data, hypotheses, and models until they can be testedand verified.True FalseLevel: EasyAnswer: True 2.Deductive reasoning goes from the specific to the general, e.g., from the “bottom up.”TrueFalse Level: ModerateAnswer: False 3.When someone says that evolution is not important, “after all, it’s just a theory,” it is probable that they do not understand how scientists use the term “theory.”True FalseLevel: EasyAnswer: True4.Tentative or frontier science is always science done by incompetent scientists whose work will never be accepted by their peers.TrueFalse Level: ModerateAnswer: False5.Scientists can disprove things but they cannot prove anything absolutely, which means there is always some uncertainty in science.True FalseLevel: ModerateAnswer: TrueTest Bank: Chapter 231
2-2 What Is Matter?6.A chemical formula is a shorthand way of writing the symbols for atoms or ions in a compound.True False Level: ModerateAnswer: True7.Methane, a hydrocarbon, is considered an organic molecule even though it contains only one carbon atom.True FalseLevel: EasyAnswer: True8.How useful matter is to humans as a resource is determined by its concentration, availability for use, and its potential.True False Level: EasyAnswer: True2-3 How Can Matter Change?9.A nuclear change in which two isotopes of light elements are forced together, releasing huge amounts of energy, is called nuclear fission.TrueFalse Level: ModerateAnswer: False 10.In a chemical reaction, there is a change in the arrangement of atoms, ions, or molecules of the substances involvedTrue False Level: EasyAnswer: True 2-4 What Is Energy and How Can It Change Its Form? 11.Energy consumption does not mean the disappearance of energy; rather it is the conversion of energy from one form to another with no net loss.True False Level: ModerateAnswer: True Science, Matter, Energy, and Systems32
12.Energy cannot be recycled. True False Level: ModerateAnswer: True 13.Burning coal demonstrates the conversion of energy from kinetic to potential.TrueFalse Level: Difficult Answer: False 2-5 What Are Systems and How Do They Respond to Change? 14.The scientific principles of sustainability show that everything we do affects someone or something in the environment in some way.True False Level: EasyAnswer: True 15.A negative feedback loop causes a system to further change in the same direction.True False Level: ModerateAnswer: False Fill-in-the-Blank Questions2-1 What Is Science?
You've reached the end of your free preview.
Want to read all 18 pages?
- Winter '15