Data Analysis & Scientific Investigation

The graph shows the effect of temperature on catalase activity. What is the optimum temperature for catalase activity? (type the number and the unit)

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The data table shows the activity of an enzyme found in a freshwater fish. The independent variable is the​ (a)   . The optimum pH for this enzyme is ​​ (b)   The effect of acid rain in the environment would be to ​ (c)   the enzyme activity.

• pH level
• temperature
• salinity
• percent of substrate catalyzed
• 7
• 10
• 0
• decrease
• increase
• reverse

Tags

NGSS.MS-PS1-2

Students were asked to review the data table to determine which variable had the greatest impact on seed germination.

Student 1 said that it was the amount of water because plants need water to grow.

Student 2 said that it was impossible to tell because all the seeds grew, therefore all the variables had an impact on seed growth.

Student 3 said that light had the greatest impact on seed germination because in trial 3 the most plants grew at the highest percentage of light.

Student 4 said that it was impossible to tell because because all the variable changed in every trial, therefore the variable that had the greatest impact cannot be determined.

Which student is correct?

• Student 1

• Student 2

• Student 3

• Student 4

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Students designed an experiment to determine the effects of fertilizer on plant growth. The graph shows the results of their investigation. What is a valid conclusion that the students should make about the effects of fertilizer on plant growth?

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Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The data table shows the data gathered during an investigation. What is a probable hypothesis for this experiment?

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Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Based on the data collected, what is a valid conclusion about the optimum soil pH range for tomato plant growth?

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Tags

NGSS.MS-LS1-5

During a study on the effect of soil pH on plant growth, students observed plant height over several weeks.

Student 1 stated that neutral pH led to the tallest plants, indicating it was the best for growth.

Student 2 argued that the experiment was flawed because the amount of sunlight was not consistent.

Student 3 noted that acidic soil resulted in the shortest plants, suggesting it was detrimental to growth.

Student 4 believed that pH had no effect since plants grew at all pH levels.

Which student is correct?

• Student 1

• Student 2

• Student 3

• Student 4

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The image shows the types of data that can be collected during an experiment.

The tomatoes are bright read is a type of ​ (a)  

The tomatoes have a mass of 1.7 grams is a type of ​ (b)  

• qualitative data
• quantitative data

Your teacher has asked you to explain the difference between quantitative and qualitative observations. Which statement is correct?

• Quantitative observations use numbers, qualitative use characteristics of the object.

• Quantitative observations use the senses, qualitative uses numbers.

• Quantitative observations use measurement, qualitative uses numbers.

• Quantitative observations use colors, qualitative uses the senses.

The clouds are grey and ground is wet.

• qualitative

• quantitative

Tags

NGSS.MS-ESS2-5