Scientific Method

Another word for prediction or educated guess is: ________________

• hypothesis

• conclusion

• experiment

• data

Everything you want to remain the same or unchanged is called are called  the ___________ variables.

• independent
• dependent
• controlled

The steps you took to do your experiment.

• Results
• Problem
• Procedure
• Conclusion

Sabrina wants to test which brand of popcorn pops the most kernels.  She picked a Giant Eagle brand, Orville Redenbacher, and PopSecret.  All three bags started with the same number of kernels.  She popped each for 3 minutes in the same microwave, and then counted the number of kernels left over.  What is her independent variable?

• Number of kernels left over
• Brand of popcorn
• Number of kernels before popping
• Length of time cooking

Kira wants to test which type of soda creates the biggest foam explosion when adding a Mentos candy.  She chose Sprite, Coke, and Mountain Dew.  One at a time, she added a single Mentos candy and measured the height of the foam eruption.  Mountain Dew created a foam eruption of 7 inches.  Coke and Sprite tied at 5 inches.  What is her dependent variable?

• Brand of soda
• Number of mentos candies used
• Height of foam eruption
• Temperature of soda

Tags

NGSS.MS-ETS1-3

NGSS.MS-PS1-2

Which of the following is a quantitative observation?

• The bird is very colorful.
• The bird has 4 different colors on him.
• The bird has many, many feathers.
• It is a bird. 

What is a qualitative observation about this image? 

• There are 10 mini trees in the picture. 
• There are two colored bushes in the picture. 
• There is one power line going across in the air. 
• There is art created from trees in this photo. 

What is the first step in the scientific method?

• Make an observation
• Design and conduct an experiment
• Make an hypothesis
• Share your results

The flower has red petals....

• Observation
• Hypothesis
• Inference

The boy has tears in his eyes, so he must be sad....

• Observation
• Hypothesis
• Inference