4. Convert to centimeters: 6.8 meters

Question

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.
12. Convert 11.1 liters to centiliters.
A. 1,110 centiliters
B. 11,100 centiliters
C. 111 centiliters
D. 111,000 centiliters
17. Genevieve was working on a science lab. In her lab, she was combining two chemicals and timing how long the reaction took to form a precipitate. She repeated the investigation a total of five times. Her times are shown below.
trial time (min:sec)
1 08:37
2 07:59
3 08:16
4 08:21
5 08:03
The next day, the instructor told Genevieve that the standard time for her investigation should have been 8 minutes 7 seconds. Which of the following choices describes Genevieve's work in the lab?
A. Her test trials had a high level of accuracy but a low level of precision.

B. Her test trials had a high level of accuracy and a high level of precision.

C. Her test trials had a low level of accuracy but a high level of precision.

D. Her test trials had a low level of accuracy and a low level of precision.
check my answers
4.d
5.a
6.a
7.c
8.a
9.a
12.c
17.b

Answer 1

4:A 100cm to the m so 680*100=68000
5:A correct
6:A correct
7:D . both A and D are volumetric measures but litres are more appropriate on the scale of a barrel
8:A correct
9:D (i think) new information feelings are testable but not particularly useable as scientific data as they are subjective therefore it may be useful information, but not scientific enough to publish
12:A (100cl to l)
17:A(i think) fairly close to the standard time but not grouped well enough to be precise

Answer 2

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Answer 3

4:A 100cm to the m so 680*100=68000
5:A correct
6:A correct
7:D . both A and D are volumetric measures but litres are more appropriate on the scale of a barrel
8:A correct
9:D (i think) new information feelings are testable but not particularly useable as scientific data as they are subjective therefore it may be useful information, but not scientific enough to publish
12:A (100cl to l)
17:A(i think) fairly close to the standard time but not grouped well enough to be precise