Scientific InvestigationScientific Investigation

Using the Using the scientific methodscientific method and and process skillsprocess skills to better to better

understand the world around us.understand the world around us.

Scientific MethodScientific MethodOver time, scientists have developed a general Over time, scientists have developed a general

way of doing investigations and looking for way of doing investigations and looking for explanations about happenings in the explanations about happenings in the universe.universe.

1. State a problem1. State a problem 2. State a hypothesis2. State a hypothesis 3. Design an experiment3. Design an experiment 4. Conduct an experiment4. Conduct an experiment 5. Communicate findings5. Communicate findings

The Experiment

Ms. Meadows loves bubble gum Ms. Meadows loves bubble gum and would like to be able to blow and would like to be able to blow bigger bubbles than anyone at bigger bubbles than anyone at PHMS. She bought four different PHMS. She bought four different brands of gum and has planned brands of gum and has planned an experiment to test the bubble an experiment to test the bubble power of the bubble gum brands power of the bubble gum brands she purchased.she purchased.

State a ProblemState a Problem

Ask a questionAsk a question

Which brand of bubble gum will blow Which brand of bubble gum will blow the largest bubbles?the largest bubbles?

Do preliminary researchDo preliminary research

Check the ingredients on each Check the ingredients on each package to see which has the greater package to see which has the greater percentage of gum base.percentage of gum base.

State a HypothesisState a Hypothesis

Make a prediction or educated Make a prediction or educated guessguess

If…then statementIf…then statement

If Bubblicious has the greater Bubblicious has the greater percentage of gum base, percentage of gum base, then it will it will produce larger bubbles.produce larger bubbles.

Design an ExperimentDesign an Experiment

List materialsList materials3 pieces of each brand of gum (Bubblicious, Double Bubble, 3 pieces of each brand of gum (Bubblicious, Double Bubble,

Bubble Yum, Bazooka)Bubble Yum, Bazooka)

Meter stickMeter stick

Balance scalesBalance scales

Data tableData table

Write step by step proceduresWrite step by step proceduresMeasure four grams of each piece of gumMeasure four grams of each piece of gum

Chew one piece of gum for five minutesChew one piece of gum for five minutes

Blow three bubbles with the chewed gumBlow three bubbles with the chewed gum

Record the measurementsRecord the measurements

Repeat steps 2-4 for each piece of gumRepeat steps 2-4 for each piece of gum

Conduct an ExperimentConduct an Experiment

Follow Follow proceduresprocedures

Collect and Collect and organize dataorganize data• Record the Record the

measurement of measurement of each bubble on each bubble on the data tablethe data table

Piece 1

Piece 2 Piece 3 Avg

Brand/ Bubble

#

1 2 3 1 2 33

1 2 3

Bubblicious

Bubble Yum

Bazooka

Double Bubble

Communicate FindingsCommunicate Findings

Analyze dataAnalyze dataAverage the bubble measurements for Average the bubble measurements for

each brand of bubble gumeach brand of bubble gum

Organize data in a graphOrganize data in a graph State conclusionsState conclusions

________ is the best bubble gum for ________ is the best bubble gum for bubble blowing. bubble blowing.