Identifying Variables/Scientific Method

The first step of the scientific method is _____.

• make a hypothesis

• ask a question

• look at results

• design an experiment

After I make a hypothesis (a guess), I need to test it. How do I do that?

• Ask a question

• share your results

• design an experiment

Tags

NGSS.MS-ETS1-4

NGSS.MS-PS2-2

After I get results from my experiment, what do I do with my results?

• share my results

• design an experiment

• make a hypothesis

Tags

NGSS.MS-PS1-2

One plant receives 12 hours of light, and another plant gets 8 hours. The plant growth is measured after 2 weeks. What is the independent variable (changed on purpose)?

• plant growth

• hours of sunlight

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The theatre department sells gray t-shirts and purple t-shirts. They count the number of each shirt they sell. What is the independent variable (changed on purpose)?

• color of t-shirt

• number of shirts sold

Students were given a choice of pepperoni or cheese pizza. They counted the number of slices of each were chosen. What is the dependent variable?

• the type of pizza

• the # of each kind of pizza

They added Mt. Dew and Diet Dew to the coke machine. Mrs. Hagan counts the number of each sold at the end of 2 weeks. What is the independent variable (what do they change)?

• Which sold better

• Type of soda

Students are given the option of ping pong or pickleball in gym class. Mr. Brooks needs to know how many kids choose each activity and counts the votes. What is the dependent variable (what are we measuring)?

• how many choose each activity

• activity choices

Mrs. Crafton is selling bracelets in purple and orange. She counts how many of each bracelet sold at the end of the day. True or False: The color of the bracelets is the dependent variable.

• True

• False

While camping, half the people used bug spray and the other half did not. At the end of the week they counted the number of bug bites they had. True or False: The number of bug bites is the dependent variable.

• True

• False