Scientific Method

A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 7.Which is the best conclusion for this experiment?

• Acid has no effect on the health of this type of plant.
• B. High acidity is helpful to this type of plant.
• C. Low acidity is harmful to this type of plant.
• High acidity is harmful to this type of plant.

Tags

NGSS.MS-LS1-5

Carmen conducted an experiment to determine if listening to different types of music would affect a person’s pulse. Her hypothesis was that pulse rate would change with different types of music. Each person listened to seven different selections of music for 30 seconds each. Each person’s pulse was taken before the music and then after each 30-second interval of music. The pulses were taken again after the music selections were completed. Based on her experiment, Carmen concluded that a person’s pulse rate changed when the person listened to different types of music.  Which component is missing from Carmen’s experiment?

• a question
• a hypothesis
• a control group
• a description of the experiment

What is the first thing you do when performing the scientific method?

• Make a conclusion
• make an observation
• solve a problem
• experiment

Why is it important to collect data?

• because
• it gives you busy work
• They are magically delicious
• in order to share your results with others

Tags

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

This step should be done more than once to ensure accurate results. 

• Conduct an experiment
• conclude
• record data
• clean up after an investigation

Tags

NGSS.MS-PS3-4

What does every scientific experiment begin with?

• a hypothesis
• a conclusion
• procedures
• a question or problem

The independent variable is the ONE thing you _____.

• change
• keep the same
• experiment with
• investigate

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

The variable that you measure is the -

• IV
• DV
• Constant
• Repeated Trial

The variables in an experiment that stay the same are the - 

• IV
• DV
• Constants

Tags

NGSS.MS-PS2-2

A student wants to test the effects of type of exercise on heart rate.  What is the dependent variable?

• heart rate
• type of exercise
• amount of exercise
• time of day exercise occurs