Scientific Method
Metric Conversion
Qualitative vs. Quantitative
Variables
Mystery
100
What two words must be included in your hypothesis?
If...Then
100
Convert 3 meters to kilometers
0.003 km
100
Data using your 5 senses and does not use any numbers.
Qualitative
100
Jordan wants to know if listening to music affects how quickly he finishes his math homework.
He times himself doing the same kind of homework:
Trial 1: No music
Trial 2: Slow music
Trial 3: Fast music
What is the independent variable? What is the dependent variable?
Independent: type of music
Dependent: how quickly he finishes his math homework
100
True or false: Experiments should only be repeated one time.
False
200
What is the summary at the end of an experiment called?
Conclusion
200
Convert 1,200 millimeters to centimeters
120 cm
200
Data including measurements and numbers.
Quantitative
200
Lila wants to see if the amount of water changes how tall her plants grow.
She plants 4 seeds in the same type of soil:
Plant 1: 0 cups of water
Plant 2: 1 cup of water
Plant 3: 2 cups of water
Plant 4: 3 cups of water
What is the independent variable? What is the dependent variable? List 2 constants.
Independent: amount of water
Dependent: how much her plant grows
Constants: same type of soil, amount of sunlight, container, location, etc.
200
I want to measure the height of my plant in centimeters. What tool should I use to measure it?
Ruler
300
How can you always improve your experiment and what does it do to your results?
You can always improve your experiment by repeating it. This makes your results more reliable.
300
Convert 13.2 centimeters to dekameters
0.0132 dekameters
300
The lemonade is yellow, tastes sour, and there are 8 cups on the table.
Which observations are qualitative and which are quantitative
Qualitative: the lemonade is yellow and tastes sour
Quantitative: there are 8 cups on the table
300
Avery wants to see how different types of exercise affect heart rate.
She measures her heart rate after: Sitting still, Walking, Jogging, and Sprinting. What is the independent variable? What is the dependent variable?
Independent: type of exercise
Dependent: heart rate
300
What is the independent and dependent variables?
Independent: Month
Dependent: Rainfall in inches
400
What is the purpose of an experiment?
To test the hypothesis.
400
Convert 12 kilograms to centigrams
1,200,000 centigrams
400
My dog weighs 80 pounds, he barked loudly, and he has black fur.
Which observations are qualitative and which are quantitative?
Qualitative: He barked loudly and has black fur
Quantitative: My dog weighs 80 pounds
400
Kobe is testing which brand of battery lasts the longest in a flashlight.
He puts the same type of battery in identical flashlights and times how long each one stays lit.
What is the independent variable? What is the dependent variable? List two constants.
Independent: Brand of battery
Dependent: how long the battery lasts
Constants: same type of battery and same flashlight
400
What are the independent and dependent variables?
Independent:Amount of water in the bird bath
Dependent: Number of birds in the bird bath
500
List all 8 steps of the scientific method in order.
Observation, Question, Research, Hypothesis, Experiment, Analyze, Conclusion, Report
500
Convert 4.32 deciliters to dekaliters
0.0432 dekaliters
500
Define "qualitative" and "quantitative", and give an example of each.
Qualitative: data using your 5 senses. Only words
Quantitative: includes measurements and numbers
500
Marco wants to know if changing the amount of sugar affects how sweet his cookies taste.
He bakes four batches:
Batch 1 (Control): Original amount of sugar
Batch 2: Half the sugar
Batch 3: Double the sugar
Batch 4: No sugar
What is the independent variable? What is the dependent variable? What is the control group? List 2 constants.
Independent: Amount of sugar
Dependent: how sweet the cookies taste
Control:original amount of sugar
Constants: bake time, brand of sugar, ingredients, temperature of the oven, the pan, etc.
500
How many independent variables are tested in an experiment? Why?
Only 1 independent variable is tested at a time to make sure what you are changing is what is impacting your results. If you test more than one variable you cannot be sure what caused the results.