3. A simulation or approximate representation of a system being studied is an/a
4. An apple falls to the earth. Similarly, leaves, stones, and baseballs all fall to the earth when released. Our conclusion is that all things fall to the earth's surface when dropped. This is an example of inductive reasoning.
5. To conduct good science, scientists use
6. Some scientists make claims about the coming global climate change; others disagree. We say that such science
7. Which of the following best describes water, H2O?
8. A solution contains more hydroxide (OH-) than hydrogen (H+) ions. Which of the following would best describe the solution?
9. The fundamental structural unit of life is the
10. Since salt is concentrated NaCl molecules, we say that it is
11. When water is boiled, the liquid is changed to a gas. We say that a ________ ________ has occurred.
12. The energy present in sunlight is ________ energy.
13. Energy
14. The First Law of Thermodynamics states that the energy coming out of a system is always less than the energy put into the system.
15. The Second Law of Thermodynamics states that
16. Your friend wants to buy a new car. He asks your advice, since he wants an efficient car and knows you know the latest on green technology cars. Your advice makes him change his mind from the red SUV to the blue hybrid. In this conversation, changing his mind was a/an
17. Cancer-causing pollutants called PCBs are in the Hudson River (NY); they increase the risk of fish getting cancer by X%. Another pollutant in the river increases the risk of cancer by Y%. When both of these pollutants are present, the cancer risk goes up by much more than X% + Y%. This is called
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