4. Convert to centimeters: 6.8 meters
A. 6,800 centimeters
B. 68 centimeters
C. 68,000 centimeters
D. 680 centimeters
5. What is the difference between a theory and an opinion?
A. A theory is supported by scientific evidence, while an opinion is not.
B. An opinion is supported by scientific evidence, while a theory is not.
C. A theory is a scientific fact, while an opinion is not.
D. An opinion is a scientific fact, while a theory is not
6. A politician running for office tells a crowd at a rally that the only way to keep the food chain safe is to stop allowing the growth of genetically-modified crops, or GMOs. Should the politician's statement be considered a scientific fact?
A. No. He presented no scientific data to support his claim.
B. Yes. Public speakers are known to be experts in every subject.
C. Yes. He is probably friends with scientists who work with GMOs.
D. No. Only scientists can talk about scientific facts.
7. Of the choices below, which unit of measurement would be most appropriate for measuring the volume of a barrel?
A. milliliters
B. grams
C. millimeters
D. liters
8. Anna is conducting an experiment to determine how weather affects cell phone reception. She is trying to decide the best way to conduct her experiment in order to collect meaningful data.
Which of the following experiments would help Anna collect the best data?
A. Test a cell phone's reception in the exact same location under various atmospheric conditions.
B. Test different cell phones in different locations on days with clear weather.
C. Test different cell phones in different locations on days with rainy weather.
D. Test a cell phone's reception in one location with clear weather and in another location with rainy weather.
9. Sara wanted to do a scientific investigation that involved people and their sleep. She hypothesized that all people feel happier if they take a one-hour afternoon nap each day. Is her hypothesis valuable?
A. No; feelings are not testable.
B. Yes; it will finally prove that everyone should have an afternoon nap time.
C. No; hypotheses must not involve humans.
D. Yes; it will lead to new information on the results of napping.
10. A boy complains of stomach pain to his mother. Unable to resolve the issue herself, she takes the boy to the doctor. Which of the following might be a good hypothesis for the stomach pain?
A. The boy fell and hurt his stomach.
B. The boy ate something that upset his stomach.
C. The boy has an infection and needs antibiotics.
D. Any of these answer choices could be correct.
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i need help can you give me some hint
s
4. https://www.google.com/search?q=metric+system&client=firefox-a&hs=btG&rls=org.mozilla:en-US:official&channel=sb&tbm=isch&tbo=u&source=univ&sa=X&ei=KN9OVPDzGeTbsAScoYG4Aw&ved=0CDQQsAQ&biw=995&bih=601
5. http://www.answers.com/Q/What_is_the_difference_between_a_theory_and_opinion
7. See link to 4.
4. To convert meters to centimeters, you need to multiply the value by 100. So, to convert 6.8 meters to centimeters, you would multiply 6.8 by 100. The correct answer is A. 6,800 centimeters.
5. The difference between a theory and an opinion is that a theory is supported by scientific evidence, while an opinion is not. A theory is an explanation that is based on evidence and can be tested and supported by further evidence. On the other hand, an opinion is a personal view or belief that may or may not be supported by evidence or facts. The correct answer is A. A theory is supported by scientific evidence, while an opinion is not.
6. No, the politician's statement should not be considered a scientific fact. In order for a statement to be considered a scientific fact, it must be supported by scientific data and evidence. The politician did not present any scientific data to support his claim, so it cannot be considered a scientific fact. The correct answer is A. No. He presented no scientific data to support his claim.
7. The most appropriate unit of measurement for measuring the volume of a barrel would be liters. Liters are commonly used to measure the volume of liquid, and a barrel is typically used to store liquids such as oil or wine. The correct answer is D. liters.
8. The best way for Anna to collect the best data in her experiment would be to test a cell phone's reception in the exact same location under various atmospheric conditions. This would allow her to isolate the variable of weather and determine its specific effect on cell phone reception. The correct answer is A. Test a cell phone's reception in the exact same location under various atmospheric conditions.
9. No, Sara's hypothesis is not valuable. Hypotheses must be testable and based on measurable or observable factors. Since feelings cannot be objectively measured or observed, her hypothesis that all people feel happier if they take a one-hour afternoon nap each day is not valuable. The correct answer is A. No; feelings are not testable.
10. Of the given options, the best hypothesis for the boy's stomach pain would be B. The boy ate something that upset his stomach. This hypothesis suggests a potential cause for the stomach pain that can be tested and investigated further, such as by identifying any food or drink that the boy consumed prior to experiencing the pain. The correct answer is B. The boy ate something that upset his stomach.