Scientific Method

What is a hypothesis?

• An educated prediction or answer to a testable question

• A random guess

• An observation based on feelings or emotions

• 

Tags

NGSS.MS-PS1-2

What is the best way to collect and record data?

• In a data table

• On post-it notes

• On scrap paper

• interpretive dance

Tags

NGSS.3-ESS2-1

A negative correlation means that if the IV is increasing, the DV is

• increasing

• constant

• decreasing

• Staying the same

After the data is analyzed the hypothesis is stated as correct or incorrect in the __________

• conclusion

• experiment

• hypothesis

• table of contents

Tags

NGSS.MS-PS2-5

The third step of the scientific method that involves making an educated guess about what will happen.

• experiment

• conclusion

• gather information

• question

• hypothesis

The variable that you keep the same to ensure that your experiment is valid.

• independent variable

• dependent variable

• controlled variable

The variable that you are testing in your experiment (the one that changes).

• independent variable

• dependent variable

• controlled variable

Tags

NGSS.MS-PS2-2

Data that includes numbers (measurements and amounts).

• qualitative data

• quantitative data

Tags

NGSS.MS-PS1-2

NGSS.MS-PS3-4

An experiment was carried out to determine whether drinking caffeinated soda increases pulse rate. The pulse rates of two groups of people at rest were measured. Group A was then given caffeinated soda and group B was given caffeine-free soda. One hour after drinking the soda, the pulse rates were measured. The participants in the experiment were all the same age, and they were all given the same amount of soda. The dependent variable in this experiment is the

• type of soda given to each group
• amount of soda given to each group
•  pulse rate of each group
• age of participants in each group

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

• The type of plant
• The amount of sunlight
• The type of music
• The type of liquid