Scientific Inquiry

What is the independent variable in an experiment where you test the effect of different amounts of sunlight on plant growth?

• Amount of water given to the plants

• Amount of sunlight

• Type of plant

• Growth of the plant

Tags

DOK Level 1: Recall

Which of the following is a qualitative observation?

• The plant grew 5 cm in one week.

• The leaves of the plant are green.

• The plant has 10 leaves.

• The plant weighs 200 grams.

Tags

DOK Level 1: Recall

Identify the dependent variable in an experiment where you measure the effect of fertilizer on the height of tomato plants.

• Type of fertilizer

• Height of tomato plants

• Amount of water

• Type of soil

Tags

DOK Level 1: Recall

Which of the following is an inference?

• The sky is blue.

• The plant is wilting because it needs water.

• The temperature is 25°C.

• The liquid is clear.

Tags

DOK Level 2: Skill/Concept

What is the purpose of a control group in an experiment?

• To test multiple variables at once

• To serve as a standard for comparison

• To ensure the experiment is valid

• To increase the sample size

Tags

DOK Level 2: Skill/Concept

Which of the following is a quantitative observation?

• The solution is blue.

• The solution has a pH of 7.

• The solution is acidic.

• The solution is clear.

Tags

DOK Level 1: Recall

In an experiment, why is it important to keep certain factors constant?

• To ensure that the results are due to the independent variable

• To make the experiment more complex

• To increase the number of variables

• To reduce the time needed for the experiment

Tags

DOK Level 2: Skill/Concept

Which of the following is a laboratory safety rule?

• Always taste chemicals to identify them.

• Wear safety goggles when handling hazardous materials.

• Use broken glassware if necessary.

• Ignore safety instructions if you are experienced.

Tags

DOK Level 1: Recall

How would you distinguish between an observation and an inference?

• Observations are conclusions drawn from data; inferences are data collected.

• Observations are data collected using the senses; inferences are conclusions drawn from observations.

• Observations are always qualitative; inferences are always quantitative.

• Observations are guesses; inferences are facts.

Tags

DOK Level 2: Skill/Concept

In an experiment to test the effect of temperature on the solubility of sugar in water, what would be the control group?

• Water at room temperature

• Water at boiling temperature

• Water at freezing temperature

• Water with no sugar

Tags

DOK Level 3: Strategic Thinking