Scientific Method Test Review

Which sentence frame should you use when forming a hypothesis?

• "I think...because..."
• "If...then...because..."
• "Because...then...if..."
• "I...am...cool..."

Which steps of the scientific method should come before you form a hypothesis? (choose all that apply)

• Make a conclusion
• Ask a question
• Test your hypothesis in an experiment
• Make an observation
• Do some research

Identify the independent variable(s) in the following hypothesis. If you soak red skittles in various solvents like vinegar, water, and salt water, then the skittle will lose its color, because the candy shell is colored and will break down causing it to lose color.

• lose its color
• If you soak
• vinegar, water, and salt water
• skittles

Identify the dependent variable(s) in the following hypothesis. If we plant pumpkin seeds in various soil, then the seeds grown in the soil with the most nutrients will grow faster, because nutrients advance growing rates in most plants.

• growth rate
• pumpkin seeds
• various soil

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The independent variable is the item being changed on purpose.

• true
• false

Tags

NGSS.MS-PS3-4

Which of the following is a qualitative observation?

• The gummy bear weighed 3.4 grams.
• The gummy bear feels squishy.
• The gummy bear was 1.5cm long.

Which of the following is a quantitative observation?

• The gummy bear lost all its color.
• The gummy bear was 1.5 cm long.
• The gummy bear feels squishy.

Which steps of the scientific method should come AFTER you form a hypothesis?

• Experiment
• Analyze Data
• Ask a Question
• Research

The item being observed or measured is the dependent variable.

• True
• False

Tags

NGSS.MS-PS3-4

Your cell phone bill is determined by the number of text messages you sent. What is the independent variable?

• total cost
• messages sent
• cell phone bill