Exam: 01.04 the scientific method

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question 1 (multiple choice worth 2 points)

an experiment will

make your hypothesis into a law

make your hypothesis into a theory

make your hypothesis unnecessary

only test your hypothesis

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question 2 (multiple choice worth 2 points)

in the scientific method, the conclusion

is not important

comes at the end of the process

comes first

is rarely stated

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question 3 (multiple choice worth 2 points)

the conclusion

shows that the hypothesis is true

shows that the hypothesis is false

shows that the hypothesis is either true or false

shows that the hypothesis is meaningless

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question 4 (multiple choice worth 2 points)

a hypothesis

is never wrong

might be wrong

is never right

always becomes a law

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question 5 (multiple choice worth 2 points)

which of the following steps in the scientific method are in the correct order?

conclusion, purpose

hypothesis, experiment

experiment, hypothesis

conclusion, hypothesis

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question 6 (multiple choice worth 2 points)

in an experiment, the control is

never changed by the scientist

not important to the scientist

not recorded by the scientist

changed by the scientist

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question 7 (multiple choice worth 2 points)

the purpose of an experiment is often based on

new theories

observations

opinions of famous scientists

beliefs of famous scientists

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question 8 (multiple choice worth 2 points)

what step of the scientific method would tell you why the research is being done?

experiment

conclusion

hypothesis

purpose

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question 9 (essay worth 5 points)

why is it important for scientists to use the scientific method?

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question 10 (essay worth 4 points)

why is it important to repeat an experiment?

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According to the video, two of the ways government can play a role in the economy is by protecting property rights and to

Running and sleep. sufficient sleep is important for adolescents for both their neural and psychological development. despite this, daytıme sleepiness and poor physical and psychological functioning related to chronic sleep disturbances are common. there is a growing body of evidence that exercise is associated with both better sleep and improved psychological functioning sixty participants were recruited from a high school in northwesten switzerlandthey were randomly assigned to either a running group or a control group, 30 to each group the running group ran every moming for a little over 30 minutes on weekdays for a three-week period. all participants used a sleep log for subjective evaluation of sleep, and sleep was also objectively assessed at the beginning and end of the study using a sleep electroencephalographic device that measured quantities such as sleep efficiency and time spent in the four different sleep phases. running was found to have a positive impact on both objective and subjective measures of sleep functioning what are the explanatory variable(s) and the response variable(s)? (a) outline the design of the experiment (b) (c) here are some more details on the treatment and control groups. all participants arrived at school at 7 a. m., and the running group did two laps on the track and then ran cross countrv in groups of at least four people for 30 minutes the control group remained seated at the track, worked on horpework. and interacted with each other. when the runners returned, all participants prepared for school and ate a breaktast that was provided. iwhy do you think the experimenters had the control group arrive at 7 am interact withdassmates and have breaktast together? explain. do you think having the control eroup do these activities is important for the types of conclusion that can be reached? how?

Ato z on the bun timeline show where the events listed a through g board blow fit on the timeline