Data and Find the flaw
A student wants to see if fertilizer makes plants grow taller. They test two plants: one with fertilizer, one without. The fertilized plant is kept on the windowsill, and the other is kept in the closet.
What’s wrong with this experiment?
Light is not controlled, plant location is different
Two sets of plants. One is watered, and one is not. What type of variable is the water?
Independent or manipulated variable
Victor wants to know the average pulse of his class. Which step of the scientific method is this?
Asking a question
How should a hypothesis be structures?
If... then...
Which step of the scientific method is missing: Observation, Ask a question, Form a hypothesis,__________, collect data, Conclusion, Share results
Test your hypothesis/Experiment
What are the two types of data and describe them?
Quantitative data- measurable, numbers
Qualitative data- categories, descriptions
The variables that are kept the same to make sure that the experiment is fair
Control
Haley thinks, "If plants are given exactly 8mL of water daily, then they will grow fastest" What step of the scientific method is this?
Writing a hypothesis
Rewrite this into a testable hypothesis: "working out builds endurance"
If I exercise more, then I will have higher endurance
What is the difference between a testable and non testable question
Testable- can test it, create an experiment, gather data
Non testable- based on opinions, beliefs, preferences
A student is testing if sugar makes water boil faster. They boil 1 cup of water with sugar, then later boil 3 cups of plain water.
What’s wrong with this experiment?
The amount of water isn’t controlled.
You conduct an experiment to see which brand of microwave popcorn pops the most corn. What is the dependent variable?
What is the amount of popcorn?
Julio conducted an experiment on photosynthesis.He just published an article and went on TV to talk about his research. What step of the scientific method is this?
Share results
A student wants to test if eating canes makes people run faster. What could a control be in this experiment?
run the same distance, wear the same type of shoes, run the same track
List the independent and dependent variables in the following hypothesis. If you listen to music when you do homework, then you will finish your work faster"
Independent- what you're listening to/ the music
Dependent- time it take to finish work
A student wants to see if running more improves endurance. They test the volleyball team by having them run more and more each day, but they don’t compare them to anyone else. What is wrong with this experiment, how could they have fixed this?
They could have split up the volleyball team in half, had half of the team run more and more and the other workout like normal.
There are two types of fuel poured into the same car to see which one works best. What type of variable is the fuel?
Independent
Is this a testable or non testable scientific question- Is a rose the prettiest flower?
Non testable
Which of these is the better hypothesis and why?
A) If a dog is happy, then it will wag its tail.
B) If a dog is given a treat, then it will wag its tail.
B is better because it’s measurable and testable.
DAILY DOUBLEEEEEE!!!! How many independent variables do you change at one time?
one
A student wants to test if music helps plants grow. They play music for their favorite plant. At the end of the experiment they just say “it looks healthier.” What’s wrong with this experiment? How should they have collected data?
Saying the plant "looks healthier" isn't high quality data. They should have measured the height, made daily observations about the colors of the leaves etc
Two different colored cans are placed in the sun and the temperature is recorded. What type of variable is the temperature of the cans?
Depdendent
List all seven steps of the scientific method.
Observation, Ask a question, Form a hypothesis, Test your hypothesis, Data, Conclusion, Share results
student’s data shows no difference in growth between plants with and without music, even though their hypothesis was “If plants hear music, then they will grow faster.” What should the student conclude about their hypothesis?
The hypothesis was not supported
What is wrong with this experiment: Camila wants to see if listening to music improves concentration. She has Karen listen to classical music while working on an english essay and Emily listen to rock music while working on math.
- should be doing the same type of homework, should listen to the same type of music, timed, should test this theory on more than 2 people