Understanding Scientific Concepts and Methods

Which of the following is the first step in the scientific method?

• Formulating a hypothesis

• Conducting an experiment

• Making an observation

• Analyzing data

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DOK Level 2: Skill/Concept

How many significant figures are in the number 0.00450?

• 2

• 3

• 4

• 5

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DOK Level 2: Skill/Concept

When should you use a bar graph instead of a line graph?

• When comparing different categories

• When showing trends over time

• When displaying continuous data

• When plotting points on a coordinate plane

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DOK Level 2: Skill/Concept

Identify the independent variable in the following experiment: "The effect of different amounts of sunlight on the growth of plants."

• Amount of sunlight

• Growth of plants

• Type of plant

• Soil type

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DOK Level 2: Skill/Concept

Which of the following is a dependent variable in an experiment measuring the effect of fertilizer on plant height?

• Amount of fertilizer

• Type of plant

• Plant height

• Soil pH

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DOK Level 2: Skill/Concept

Convert 5 kilometers to meters.

• 50 meters

• 500 meters

• 5000 meters

• 50000 meters

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DOK Level 2: Skill/Concept

Which step of the scientific method involves creating a testable statement?

• Observation

• Hypothesis

• Experiment

• Conclusion

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DOK Level 2: Skill/Concept

How many significant figures are in the number 123.450?

• 4

• 5

• 6

• 7

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DOK Level 2: Skill/Concept

Which type of graph is best for showing changes over time?

• Pie chart

• Bar graph

• Line graph

• Histogram

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DOK Level 2: Skill/Concept

In an experiment, what is the role of the independent variable?

• It is the variable that is measured

• It is the variable that is changed or controlled

• It is the variable that remains constant

• It is the variable that is used as a control

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DOK Level 2: Skill/Concept