Nature of Science Review

In science, we often gather information with our senses by watching, listening, smelling, and touching. For example, you may record how the color of a flower changes. What is this process called?

• Stating hypotheses

• Forming conclusions

• Making observation

• Performing experiments

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NGSS.MS-LS1-8

Bad Bunny counts the number of people who visit the pool each day for 1 week. He displays his findings on a bar graph. Between which two days did the number of visitors change the most?

• Tuesday and Wednesday

• Wednesday and Thursday

• Thursday and Friday

• Friday and Saturday

Mrs. Nieves wants her class to observe and measure baby mice and record the data in their science journals. One student's journal looks like the illustration shown. What conclusion can the student make based on the data collected?

• A mouse will never weigh more than 6g

• Baby mice can vary in size, color, and activity level

• Baby mice will never be less than 11 mm in length when they are born

• Brown baby mice are bigger than white baby mice

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Imagine that a scientist suggests that the size of an insect population depends on temperature. What observations must this scientist make in order to collect evidence to support his or her hypothesis?

• The scientist must observe the insect population only in winter

• The scientist must observe the insect population in the labratory

• The scientist must observe the insect population in different areas

• The scientist must observe the insect population throughout the year

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Scientists always develop a plan when they try to learn something new about our natural world. Which sequence correctly shows the steps scientists follow in their plan?

• Make observations, develop an idea, obtain evidence, suggest an explanation

• Obtain evidence, suggest an explanation, develop an idea, make observations

• Suggest an explanation, obtain evidence, make observations, develop an idea

• Develop an idea, suggest an explanation, obtain evidence, make observations

Kyle is wondering what he is getting for his birthday. He decides to shake the box that contains his present. Kyle did not realize it, but he was acting like a scientist. What was the first step Kyle took in his situation that a scientist also takes?

• Asking a question

• Collecting evidence

• Drawing a conclusion

• Developing an explanation

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Scientists communicate their results by publishing their work. Why is it important for scientists to do this?

• To learn from each other

• To keep their work secret

• To compete with other scientists

• So the experiments are not repeated

The amount of land covered by water in a wetland can vary. The following chart shows the average percentage of the land in one wetland that is covered by water each month. If a scientist wanted to explore the wetland when the most land was above water, during which of the following seasons should the scientist visit this wetland?

• Fall

• Spring

• Winter

• Summer

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NGSS.MS-LS2-1

Each measuring tool is designed to measure a specific property of an object or material. Which of these tools can be used to measure the volume of a material?

• Measuring cup

• Measuring tape

• Balance

• Thermometer

Which of the following is always an important part of an experiment?

• Making a working model

• Observing things in nature

• Making drawings of things observed

• Identifying and controlling variables

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