Ransom Science, 3rd 9 Weeks, Nature of Science (Part 3)

Anton is a geologist. He wants to get the best possible information about lava flows from eruptions that are happening at some specific locations around the world. He wants to be able to vary what he studies based on his initial findings. Which type of investigation should Anton conduct?

• a survey

• fieldwork

• library research

• a laboratory investigation

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS3-2

Which sequence of events describes the standard scientific method of investigation?

• experiment, hypothesis, analysis of data, conclusion

• hypothesis, experiment, conclusion, analysis of data

• analysis of data, conclusion, experiment, hypothesis,

• hypothesis, experiment, analysis of data, conclusion

Experiments are often repeated many times by the same or different scientists. What is the most important reason more than one scientist should conduct an investigation using the same methods?

• If the results are the same, replication of the investigation helps to confirm the results.

• The competition makes the scientists work more carefully.

• More than one scientist is interested in the problem.

• Different scientists might perform the experiment differently.

Dalton is doing research on the internet to find facts for his science project. An on-line search returns the following sites. Which would be the best to use?

• a website that does not provide the author's name

• a blog of someone who studies astrology

• an article from a scientific magazine

• an online wiki

Miguel and Blanca are each using a questionnaire with different groups of students to determine which flavor of juice is preferred. After administering their questionnaire, they compare their results and find that they are very different. How should Miguel and Blanca proceed?

• They should throw out their results and start over.

• They should decide which set of results is better and throw out the other set.

• They should compare their methods to see if they can explain why their results varied.

• One of the students should change their results so the two sets of results match up better.

Tags

NGSS.MS-ETS1-3

Although a scientific theory is well supported and widely accepted, what might cause it to change?

• new evidence

• a scientific law

• individual claims

• a scientific model

Tags

NGSS.MS-LS4-1

Scientific knowledge is capable of lasting a long time. What makes scientific knowledge hold up so well over time?

• As new evidence is presented, scientific knowledge is open to revision.

• Scientific knowledge is published in well-respected journals, so it is easy to locate.

• Scientific knowledge is will researched and permanent.

• Once established, scientific laws cannot be broken or revised.

Tags

NGSS.HS-PS1-2

Sometimes when multiple teams conduct the same investigation, they end up with different results. What is most likely to be affected by the results of an investigation?

• the methods

• the materials

• the conclusion

• the hypothesis

Kenny planned an investigation that would test the effects of exercise on heart rate. He asked five classmates to run around the school track. He measured their heart rates before and after they ran. The results of his experiment are shown in the table. Which conclusion is best supported by the data in the chart?

• An increase in the amount of exercise will cause heart rate to increase.

• The heart rate of the person exercising changed based on what foods they ate.

• The age of a student determines how much their heart rate increases with exercise.

• The amount of sweat each student produced increased based on how far they ran around the track.

Zach is conducting an experiment to observe which type of fertilizer will allow a plant to grow the tallest. He put three plants in identical pots and placed them in the same location. He watered the plants each day with the same amount of water. Next, Zach measured the plant growth and then recorded his observations. Which of these is the control in Zach's experiment?

• the amount of growth of each plant

• the type of fertilizer used in each plant

• the amount of water given to each plant

• the pot of soil that does not contain fertilizer

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1